diff --git a/assets/js/browserfs.min.js b/assets/js/browserfs.min.js
new file mode 100644
index 0000000000..a9eca25caf
--- /dev/null
+++ b/assets/js/browserfs.min.js
@@ -0,0 +1,8 @@
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n=Re(e,1);try{this.fd2file(t).sync(n)}catch(t){n(t)}},Te.prototype.fsyncSync=function(t){this.fd2file(t).syncSync()},Te.prototype.fdatasync=function(t,e){void 0===e&&(e=h);var n=Re(e,1);try{this.fd2file(t).datasync(n)}catch(t){n(t)}},Te.prototype.fdatasyncSync=function(t){this.fd2file(t).datasyncSync()},Te.prototype.write=function(e,n,r,i,o,s){void 0===s&&(s=h);var a,c,u,f=null;if("string"==typeof n){var p="utf8";switch(typeof r){case"function":s=r;break;case"number":f=r,p="string"==typeof i?i:"utf8",s="function"==typeof o?o:s;break;default:return(s="function"==typeof i?i:"function"==typeof o?o:s)(new ke(we.EINVAL,"Invalid arguments."))}a=t.from(n,p),c=0,u=a.length}else a=n,c=r,u=i,f="number"==typeof o?o:null,s="function"==typeof o?o:s;var l=Re(s,3);try{var d=this.fd2file(e);void 0!==f&&null!==f||(f=d.getPos()),d.write(a,c,u,f,l)}catch(t){l(t)}},Te.prototype.writeSync=function(e,n,r,i,o){var s,a,c,u=0;if("string"==typeof n){c="number"==typeof r?r:null;var f="string"==typeof i?i:"utf8";u=0,s=t.from(n,f),a=s.length}else s=n,u=r,a=i,c="number"==typeof o?o:null;var h=this.fd2file(e);return void 0!==c&&null!==c||(c=h.getPos()),h.writeSync(s,u,a,c)},Te.prototype.read=function(e,n,r,i,o,s){void 0===s&&(s=h);var a,c,u,f,p;if("number"==typeof n){u=n,a=r;var l=i;s="function"==typeof o?o:s,c=0,f=t.alloc(u),p=Re(function(t,e,n){if(t)return s(t);s(t,n.toString(l),e)},3)}else f=n,c=r,u=i,a=o,p=Re(s,3);try{var d=this.fd2file(e);void 0!==a&&null!==a||(a=d.getPos()),d.read(f,c,u,a,p)}catch(t){p(t)}},Te.prototype.readSync=function(e,n,r,i,o){var s,a,c,u,f=!1,h="utf8";"number"==typeof n?(c=n,u=r,h=i,a=0,s=t.alloc(c),f=!0):(s=n,a=r,c=i,u=o);var p=this.fd2file(e);void 0!==u&&null!==u||(u=p.getPos());var l=p.readSync(s,a,c,u);return f?[s.toString(h),l]:l},Te.prototype.fchown=function(t,e,n,r){void 0===r&&(r=h);var i=Re(r,1);try{this.fd2file(t).chown(e,n,i)}catch(t){i(t)}},Te.prototype.fchownSync=function(t,e,n){this.fd2file(t).chownSync(e,n)},Te.prototype.fchmod=function(t,e,n){var r=Re(n,1);try{var i="string"==typeof e?parseInt(e,8):e;this.fd2file(t).chmod(i,r)}catch(t){r(t)}},Te.prototype.fchmodSync=function(t,e){var n="string"==typeof e?parseInt(e,8):e;this.fd2file(t).chmodSync(n)},Te.prototype.futimes=function(t,e,n,r){void 0===r&&(r=h);var i=Re(r,1);try{var o=this.fd2file(t);"number"==typeof e&&(e=new Date(1e3*e)),"number"==typeof n&&(n=new Date(1e3*n)),o.utimes(e,n,i)}catch(t){i(t)}},Te.prototype.futimesSync=function(t,e,n){this.fd2file(t).utimesSync(c(e),c(n))},Te.prototype.rmdir=function(t,e){void 0===e&&(e=h);var n=Re(e,1);try{t=u(t),s(this.root).rmdir(t,n)}catch(t){n(t)}},Te.prototype.rmdirSync=function(t){return t=u(t),s(this.root).rmdirSync(t)},Te.prototype.mkdir=function(t,e,n){void 0===n&&(n=h),"function"==typeof e&&(n=e,e=511);var r=Re(n,1);try{t=u(t),s(this.root).mkdir(t,e,r)}catch(t){r(t)}},Te.prototype.mkdirSync=function(t,e){s(this.root).mkdirSync(u(t),a(e,511))},Te.prototype.readdir=function(t,e){void 0===e&&(e=h);var n=Re(e,2);try{t=u(t),s(this.root).readdir(t,n)}catch(t){n(t)}},Te.prototype.readdirSync=function(t){return t=u(t),s(this.root).readdirSync(t)},Te.prototype.link=function(t,e,n){void 0===n&&(n=h);var r=Re(n,1);try{t=u(t),e=u(e),s(this.root).link(t,e,r)}catch(t){r(t)}},Te.prototype.linkSync=function(t,e){return t=u(t),e=u(e),s(this.root).linkSync(t,e)},Te.prototype.symlink=function(t,e,n,r){void 0===r&&(r=h);var i="string"==typeof n?n:"file";r="function"==typeof n?n:r;var o=Re(r,1);try{if("file"!==i&&"dir"!==i)return o(new ke(we.EINVAL,"Invalid type: "+i));t=u(t),e=u(e),s(this.root).symlink(t,e,i,o)}catch(t){o(t)}},Te.prototype.symlinkSync=function(t,e,n){if(n){if("file"!==n&&"dir"!==n)throw new ke(we.EINVAL,"Invalid type: "+n)}else n="file";return t=u(t),e=u(e),s(this.root).symlinkSync(t,e,n)},Te.prototype.readlink=function(t,e){void 0===e&&(e=h);var n=Re(e,2);try{t=u(t),s(this.root).readlink(t,n)}catch(t){n(t)}},Te.prototype.readlinkSync=function(t){return t=u(t),s(this.root).readlinkSync(t)},Te.prototype.chown=function(t,e,n,r){void 0===r&&(r=h);var i=Re(r,1);try{t=u(t),s(this.root).chown(t,!1,e,n,i)}catch(t){i(t)}},Te.prototype.chownSync=function(t,e,n){t=u(t),s(this.root).chownSync(t,!1,e,n)},Te.prototype.lchown=function(t,e,n,r){void 0===r&&(r=h);var i=Re(r,1);try{t=u(t),s(this.root).chown(t,!0,e,n,i)}catch(t){i(t)}},Te.prototype.lchownSync=function(t,e,n){t=u(t),s(this.root).chownSync(t,!0,e,n)},Te.prototype.chmod=function(t,e,n){void 0===n&&(n=h);var r=Re(n,1);try{var i=a(e,-1);if(i<0)throw new ke(we.EINVAL,"Invalid mode.");s(this.root).chmod(u(t),!1,i,r)}catch(t){r(t)}},Te.prototype.chmodSync=function(t,e){var n=a(e,-1);if(n<0)throw new ke(we.EINVAL,"Invalid mode.");t=u(t),s(this.root).chmodSync(t,!1,n)},Te.prototype.lchmod=function(t,e,n){void 0===n&&(n=h);var r=Re(n,1);try{var i=a(e,-1);if(i<0)throw new ke(we.EINVAL,"Invalid mode.");s(this.root).chmod(u(t),!0,i,r)}catch(t){r(t)}},Te.prototype.lchmodSync=function(t,e){var n=a(e,-1);if(n<1)throw new ke(we.EINVAL,"Invalid mode.");s(this.root).chmodSync(u(t),!0,n)},Te.prototype.utimes=function(t,e,n,r){void 0===r&&(r=h);var i=Re(r,1);try{s(this.root).utimes(u(t),c(e),c(n),i)}catch(t){i(t)}},Te.prototype.utimesSync=function(t,e,n){s(this.root).utimesSync(u(t),c(e),c(n))},Te.prototype.realpath=function(t,e,n){void 0===n&&(n=h);var r="object"==typeof e?e:{};n="function"==typeof e?e:h;var i=Re(n,2);try{t=u(t),s(this.root).realpath(t,r,i)}catch(t){i(t)}},Te.prototype.realpathSync=function(t,e){return void 0===e&&(e={}),t=u(t),s(this.root).realpathSync(t,e)},Te.prototype.watchFile=function(t,e,n){throw void 0===n&&(n=h),new ke(we.ENOTSUP)},Te.prototype.unwatchFile=function(t,e){throw void 0===e&&(e=h),new ke(we.ENOTSUP)},Te.prototype.watch=function(t,e,n){throw void 0===n&&(n=h),new ke(we.ENOTSUP)},Te.prototype.access=function(t,e,n){throw void 0===n&&(n=h),new ke(we.ENOTSUP)},Te.prototype.accessSync=function(t,e){throw new ke(we.ENOTSUP)},Te.prototype.createReadStream=function(t,e){throw new ke(we.ENOTSUP)},Te.prototype.createWriteStream=function(t,e){throw new ke(we.ENOTSUP)},Te.prototype.wrapCallbacks=function(t){Re=t},Te.prototype.getFdForFile=function(t){var e=this.nextFd++;return this.fdMap[e]=t,e},Te.prototype.fd2file=function(t){var e=this.fdMap[t];if(e)return e;throw new ke(we.EBADF,"Invalid file descriptor.")},Te.prototype.closeFd=function(t){delete this.fdMap[t]},Te.Stats=Ne;var Le=new Te,xe={},De=Te.prototype;Object.keys(De).forEach(function(t){"function"==typeof Le[t]?xe[t]=function(){return Le[t].apply(Le,arguments)}:xe[t]=Le[t]}),xe.changeFSModule=function(t){Le=t},xe.getFSModule=function(){return Le},xe.FS=Te;var Ae="undefined"!=typeof navigator&&!(!/(msie) ([\w.]+)/.exec(navigator.userAgent.toLowerCase())&&-1===navigator.userAgent.indexOf("Trident")),Pe="undefined"==typeof window,Ce=null,Ue=Object.freeze({deprecationMessage:d,isIE:Ae,isWebWorker:Pe,fail:y,mkdirpSync:g,buffer2ArrayBuffer:_,buffer2Uint8array:m,arrayish2Buffer:w,uint8Array2Buffer:v,arrayBuffer2Buffer:b,copyingSlice:S,emptyBuffer:E,bufferValidator:k,checkOptions:I}),Me=function(t){this.fs=t,this.nodefs=t.getNodeFS(),this.FS=t.getFS(),this.PATH=t.getPATH(),this.ERRNO_CODES=t.getERRNO_CODES()};Me.prototype.open=function(t){var e=this.fs.realPath(t.node),n=this.FS;try{n.isFile(t.node.mode)&&(t.nfd=this.nodefs.openSync(e,this.fs.flagsToPermissionString(t.flags)))}catch(t){if(!t.code)throw t;throw new n.ErrnoError(this.ERRNO_CODES[t.code])}},Me.prototype.close=function(t){var e=this.FS;try{e.isFile(t.node.mode)&&t.nfd&&this.nodefs.closeSync(t.nfd)}catch(t){if(!t.code)throw t;throw new e.ErrnoError(this.ERRNO_CODES[t.code])}},Me.prototype.read=function(t,e,n,r,i){try{return this.nodefs.readSync(t.nfd,v(e),n,r,i)}catch(t){throw new this.FS.ErrnoError(this.ERRNO_CODES[t.code])}},Me.prototype.write=function(t,e,n,r,i){try{return this.nodefs.writeSync(t.nfd,v(e),n,r,i)}catch(t){throw new this.FS.ErrnoError(this.ERRNO_CODES[t.code])}},Me.prototype.llseek=function(t,e,n){var r=e;if(1===n)r+=t.position;else if(2===n&&this.FS.isFile(t.node.mode))try{var i=this.nodefs.fstatSync(t.nfd);r+=i.size}catch(t){throw new this.FS.ErrnoError(this.ERRNO_CODES[t.code])}if(r<0)throw new this.FS.ErrnoError(this.ERRNO_CODES.EINVAL);return t.position=r,r};var je=function(t){this.fs=t,this.nodefs=t.getNodeFS(),this.FS=t.getFS(),this.PATH=t.getPATH(),this.ERRNO_CODES=t.getERRNO_CODES()};je.prototype.getattr=function(t){var e,n=this.fs.realPath(t);try{e=this.nodefs.lstatSync(n)}catch(t){if(!t.code)throw t;throw new this.FS.ErrnoError(this.ERRNO_CODES[t.code])}return{dev:e.dev,ino:e.ino,mode:e.mode,nlink:e.nlink,uid:e.uid,gid:e.gid,rdev:e.rdev,size:e.size,atime:e.atime,mtime:e.mtime,ctime:e.ctime,blksize:e.blksize,blocks:e.blocks}},je.prototype.setattr=function(t,e){var n=this.fs.realPath(t);try{if(void 0!==e.mode&&(this.nodefs.chmodSync(n,e.mode),t.mode=e.mode),void 0!==e.timestamp){var r=new Date(e.timestamp);this.nodefs.utimesSync(n,r,r)}}catch(t){if(!t.code)throw t;if("ENOTSUP"!==t.code)throw new this.FS.ErrnoError(this.ERRNO_CODES[t.code])}if(void 0!==e.size)try{this.nodefs.truncateSync(n,e.size)}catch(t){if(!t.code)throw t;throw new this.FS.ErrnoError(this.ERRNO_CODES[t.code])}},je.prototype.lookup=function(t,e){var n=this.PATH.join2(this.fs.realPath(t),e),r=this.fs.getMode(n);return this.fs.createNode(t,e,r)},je.prototype.mknod=function(t,e,n,r){var i=this.fs.createNode(t,e,n,r),o=this.fs.realPath(i);try{this.FS.isDir(i.mode)?this.nodefs.mkdirSync(o,i.mode):this.nodefs.writeFileSync(o,"",{mode:i.mode})}catch(t){if(!t.code)throw t;throw new this.FS.ErrnoError(this.ERRNO_CODES[t.code])}return i},je.prototype.rename=function(t,e,n){var r=this.fs.realPath(t),i=this.PATH.join2(this.fs.realPath(e),n);try{this.nodefs.renameSync(r,i),t.name=n,t.parent=e}catch(t){if(!t.code)throw t;throw new this.FS.ErrnoError(this.ERRNO_CODES[t.code])}},je.prototype.unlink=function(t,e){var n=this.PATH.join2(this.fs.realPath(t),e);try{this.nodefs.unlinkSync(n)}catch(t){if(!t.code)throw t;throw new this.FS.ErrnoError(this.ERRNO_CODES[t.code])}},je.prototype.rmdir=function(t,e){var n=this.PATH.join2(this.fs.realPath(t),e);try{this.nodefs.rmdirSync(n)}catch(t){if(!t.code)throw t;throw new this.FS.ErrnoError(this.ERRNO_CODES[t.code])}},je.prototype.readdir=function(t){var e=this.fs.realPath(t);try{var n=this.nodefs.readdirSync(e);return n.push(".",".."),n}catch(t){if(!t.code)throw t;throw new this.FS.ErrnoError(this.ERRNO_CODES[t.code])}},je.prototype.symlink=function(t,e,n){var r=this.PATH.join2(this.fs.realPath(t),e);try{this.nodefs.symlinkSync(n,r)}catch(t){if(!t.code)throw t;throw new this.FS.ErrnoError(this.ERRNO_CODES[t.code])}},je.prototype.readlink=function(t){var e=this.fs.realPath(t);try{return this.nodefs.readlinkSync(e)}catch(t){if(!t.code)throw t;throw new this.FS.ErrnoError(this.ERRNO_CODES[t.code])}};var Be=function(t,e,n,r){void 0===t&&(t=self.FS),void 0===e&&(e=self.PATH),void 0===n&&(n=self.ERRNO_CODES),void 0===r&&(r=xe),this.flagsToPermissionStringMap={0:"r",1:"r+",2:"r+",64:"r",65:"r+",66:"r+",129:"rx+",193:"rx+",514:"w+",577:"w",578:"w+",705:"wx",706:"wx+",1024:"a",1025:"a",1026:"a+",1089:"a",1090:"a+",1153:"ax",1154:"ax+",1217:"ax",1218:"ax+",4096:"rs",4098:"rs+"},this.nodefs=r,this.FS=t,this.PATH=e,this.ERRNO_CODES=n,this.node_ops=new je(this),this.stream_ops=new Me(this)};Be.prototype.mount=function(t){return this.createNode(null,"/",this.getMode(t.opts.root),0)},Be.prototype.createNode=function(t,e,n,r){var i=this.FS;if(!i.isDir(n)&&!i.isFile(n)&&!i.isLink(n))throw new i.ErrnoError(this.ERRNO_CODES.EINVAL);var o=i.createNode(t,e,n);return o.node_ops=this.node_ops,o.stream_ops=this.stream_ops,o},Be.prototype.getMode=function(t){var e;try{e=this.nodefs.lstatSync(t)}catch(t){if(!t.code)throw t;throw new this.FS.ErrnoError(this.ERRNO_CODES[t.code])}return e.mode},Be.prototype.realPath=function(t){for(var e=[];t.parent!==t;)e.push(t.name),t=t.parent;return e.push(t.mount.opts.root),e.reverse(),this.PATH.join.apply(null,e)},Be.prototype.flagsToPermissionString=function(t){var e="string"==typeof t?parseInt(t,10):t;return e&=8191,e in this.flagsToPermissionStringMap?this.flagsToPermissionStringMap[e]:t},Be.prototype.getNodeFS=function(){return this.nodefs},Be.prototype.getFS=function(){return this.FS},Be.prototype.getPATH=function(){return this.PATH},Be.prototype.getERRNO_CODES=function(){return this.ERRNO_CODES};var ze=function(){};ze.prototype.supportsLinks=function(){return!1},ze.prototype.diskSpace=function(t,e){e(0,0)},ze.prototype.openFile=function(t,e,n){throw new ke(we.ENOTSUP)},ze.prototype.createFile=function(t,e,n,r){throw new ke(we.ENOTSUP)},ze.prototype.open=function(t,e,n,r){var i=this,o=function(o,s){if(o)switch(e.pathNotExistsAction()){case Ee.CREATE_FILE:return i.stat(be.dirname(t),!1,function(o,s){o?r(o):s&&!s.isDirectory()?r(ke.ENOTDIR(be.dirname(t))):i.createFile(t,e,n,r)});case Ee.THROW_EXCEPTION:return r(ke.ENOENT(t));default:return r(new ke(we.EINVAL,"Invalid FileFlag object."))}else{if(s&&s.isDirectory())return r(ke.EISDIR(t));switch(e.pathExistsAction()){case Ee.THROW_EXCEPTION:return r(ke.EEXIST(t));case Ee.TRUNCATE_FILE:return i.openFile(t,e,function(t,e){t?r(t):e?e.truncate(0,function(){e.sync(function(){r(null,e)})}):y()});case Ee.NOP:return i.openFile(t,e,r);default:return r(new ke(we.EINVAL,"Invalid FileFlag object."))}}};this.stat(t,!1,o)},ze.prototype.rename=function(t,e,n){n(new ke(we.ENOTSUP))},ze.prototype.renameSync=function(t,e){throw new ke(we.ENOTSUP)},ze.prototype.stat=function(t,e,n){n(new ke(we.ENOTSUP))},ze.prototype.statSync=function(t,e){throw new ke(we.ENOTSUP)},ze.prototype.openFileSync=function(t,e,n){throw new ke(we.ENOTSUP)},ze.prototype.createFileSync=function(t,e,n){throw new ke(we.ENOTSUP)},ze.prototype.openSync=function(t,e,n){var r;try{r=this.statSync(t,!1)}catch(r){switch(e.pathNotExistsAction()){case Ee.CREATE_FILE:var i=this.statSync(be.dirname(t),!1);if(!i.isDirectory())throw ke.ENOTDIR(be.dirname(t));return this.createFileSync(t,e,n);case Ee.THROW_EXCEPTION:throw ke.ENOENT(t);default:throw new ke(we.EINVAL,"Invalid FileFlag object.")}}if(r.isDirectory())throw ke.EISDIR(t);switch(e.pathExistsAction()){case Ee.THROW_EXCEPTION:throw ke.EEXIST(t);case Ee.TRUNCATE_FILE:return this.unlinkSync(t),this.createFileSync(t,e,r.mode);case 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r=this.store.beginTransaction("readwrite"),i=this._findINode(r,be.dirname(t),be.basename(t)),o=this.getINode(r,t,i),s=o.update(n);try{r.put(o.id,e,!0),s&&r.put(i,o.toBuffer(),!0)}catch(t){throw r.abort(),t}r.commit()},n.prototype.makeRootDirectory=function(){var t=this.store.beginTransaction("readwrite");if(void 0===t.get("/")){var e=(new Date).getTime(),n=new _r(It(),4096,511|Fe.DIRECTORY,e,e,e);t.put(n.id,kt(),!1),t.put("/",n.toBuffer(),!1),t.commit()}},n.prototype._findINode=function(t,e,n){var r=this,i=function(i){var o=r.getDirListing(t,e,i);if(o[n])return o[n];throw ke.ENOENT(be.resolve(e,n))};return"/"===e?""===n?"/":i(this.getINode(t,e,"/")):i(this.getINode(t,e+be.sep+n,this._findINode(t,be.dirname(e),be.basename(e))))},n.prototype.findINode=function(t,e){return this.getINode(t,e,this._findINode(t,be.dirname(e),be.basename(e)))},n.prototype.getINode=function(t,e,n){var r=t.get(n);if(void 0===r)throw ke.ENOENT(e);return _r.fromBuffer(r)},n.prototype.getDirListing=function(t,e,n){if(!n.isDirectory())throw ke.ENOTDIR(e);var r=t.get(n.id);if(void 0===r)throw ke.ENOENT(e);return JSON.parse(r.toString())},n.prototype.addNewNode=function(t,e){for(var n;;)try{return n=It(),t.put(n,e,!1),n}catch(t){}throw new ke(we.EIO,"Unable to commit data to key-value store.")},n.prototype.commitNewFile=function(e,n,r,i,o){var s=be.dirname(n),a=be.basename(n),c=this.findINode(e,s),u=this.getDirListing(e,s,c),f=(new Date).getTime();if("/"===n)throw ke.EEXIST(n);if(u[a])throw ke.EEXIST(n);var h;try{var p=this.addNewNode(e,o);h=new _r(p,o.length,i|r,f,f,f);var l=this.addNewNode(e,h.toBuffer());u[a]=l,e.put(c.id,t.from(JSON.stringify(u)),!0)}catch(t){throw e.abort(),t}return e.commit(),h},n.prototype.removeEntry=function(e,n){var r=this.store.beginTransaction("readwrite"),i=be.dirname(e),o=this.findINode(r,i),s=this.getDirListing(r,i,o),a=be.basename(e);if(!s[a])throw ke.ENOENT(e);var c=s[a];delete s[a];var u=this.getINode(r,e,c);if(!n&&u.isDirectory())throw ke.EISDIR(e);if(n&&!u.isDirectory())throw ke.ENOTDIR(e);try{r.del(u.id),r.del(c),r.put(o.id,t.from(JSON.stringify(s)),!0)}catch(t){throw r.abort(),t}r.commit()},n}(qe),Sr=function(t){function e(e,n,r,i,o){t.call(this,e,n,r,i,o)}return t&&(e.__proto__=t),e.prototype=Object.create(t&&t.prototype),e.prototype.constructor=e,e.prototype.sync=function(t){var e=this;this.isDirty()?this._fs._sync(this.getPath(),this.getBuffer(),this.getStats(),function(n){n||e.resetDirty(),t(n)}):t()},e.prototype.close=function(t){this.sync(t)},e}(We),Er=function(e){function n(){e.apply(this,arguments)}return e&&(n.__proto__=e),n.prototype=Object.create(e&&e.prototype),n.prototype.constructor=n,n.isAvailable=function(){return!0},n.prototype.init=function(t,e){this.store=t,this.makeRootDirectory(e)},n.prototype.getName=function(){return this.store.name()},n.prototype.isReadOnly=function(){return!1},n.prototype.supportsSymlinks=function(){return!1},n.prototype.supportsProps=function(){return!1},n.prototype.supportsSynch=function(){return!1},n.prototype.empty=function(t){var e=this;this.store.clear(function(n){Ot(n,t)&&e.makeRootDirectory(t)})},n.prototype.rename=function(e,n,r){var i=this,o=this.store.beginTransaction("readwrite"),s=be.dirname(e),a=be.basename(e),c=be.dirname(n),u=be.basename(n),f={},h={},p=!1;if(0===(c+"/").indexOf(e+"/"))return r(new ke(we.EBUSY,s));var l=function(){if(!p&&h.hasOwnProperty(s)&&h.hasOwnProperty(c)){var l=h[s],d=f[s],y=h[c],g=f[c];if(l[a]){var _=l[a];delete l[a];var m=function(){y[u]=_,o.put(d.id,t.from(JSON.stringify(l)),!0,function(e){Ft(e,o,r)&&(s===c?o.commit(r):o.put(g.id,t.from(JSON.stringify(y)),!0,function(t){Ft(t,o,r)&&o.commit(r)}))})};y[u]?i.getINode(o,n,y[u],function(t,e){Ft(t,o,r)&&(e.isFile()?o.del(e.id,function(t){Ft(t,o,r)&&o.del(y[u],function(t){Ft(t,o,r)&&m()})}):o.abort(function(t){r(ke.EPERM(n))}))}):m()}else r(ke.ENOENT(e))}},d=function(t){i.findINodeAndDirListing(o,t,function(e,n,i){e?p||(p=!0,o.abort(function(){r(e)})):(f[t]=n,h[t]=i,l())})};d(s),s!==c&&d(c)},n.prototype.stat=function(t,e,n){var r=this.store.beginTransaction("readonly");this.findINode(r,t,function(t,e){Ot(t,n)&&n(null,e.toStats())})},n.prototype.createFile=function(t,e,n,r){var i=this,o=this.store.beginTransaction("readwrite"),s=E();this.commitNewFile(o,t,Fe.FILE,n,s,function(n,o){Ot(n,r)&&r(null,new Sr(i,t,e,o.toStats(),s))})},n.prototype.openFile=function(t,e,n){var r=this,i=this.store.beginTransaction("readonly");this.findINode(i,t,function(o,s){Ot(o,n)&&i.get(s.id,function(i,o){Ot(i,n)&&(void 0===o?n(ke.ENOENT(t)):n(null,new Sr(r,t,e,s.toStats(),o)))})})},n.prototype.unlink=function(t,e){this.removeEntry(t,!1,e)},n.prototype.rmdir=function(t,e){var n=this;this.readdir(t,function(r,i){r?e(r):i.length>0?e(ke.ENOTEMPTY(t)):n.removeEntry(t,!0,e)})},n.prototype.mkdir=function(e,n,r){var i=this.store.beginTransaction("readwrite"),o=t.from("{}");this.commitNewFile(i,e,Fe.DIRECTORY,n,o,r)},n.prototype.readdir=function(t,e){var n=this,r=this.store.beginTransaction("readonly");this.findINode(r,t,function(i,o){Ot(i,e)&&n.getDirListing(r,t,o,function(t,n){Ot(t,e)&&e(null,Object.keys(n))})})},n.prototype._sync=function(t,e,n,r){var i=this,o=this.store.beginTransaction("readwrite");this._findINode(o,be.dirname(t),be.basename(t),function(s,a){Ft(s,o,r)&&i.getINode(o,t,a,function(t,i){if(Ft(t,o,r)){var s=i.update(n);o.put(i.id,e,!0,function(t){Ft(t,o,r)&&(s?o.put(a,i.toBuffer(),!0,function(t){Ft(t,o,r)&&o.commit(r)}):o.commit(r))})}})})},n.prototype.makeRootDirectory=function(t){var e=this.store.beginTransaction("readwrite");e.get("/",function(n,r){if(n||void 0===r){var i=(new Date).getTime(),o=new _r(It(),4096,511|Fe.DIRECTORY,i,i,i);e.put(o.id,kt(),!1,function(n){Ft(n,e,t)&&e.put("/",o.toBuffer(),!1,function(n){n?e.abort(function(){t(n)}):e.commit(t)})})}else e.commit(t)})},n.prototype._findINode=function(t,e,n,r){var i=this,o=function(t,i,o){t?r(t):o[n]?r(null,o[n]):r(ke.ENOENT(be.resolve(e,n)))};"/"===e?""===n?r(null,"/"):this.getINode(t,e,"/",function(n,s){Ot(n,r)&&i.getDirListing(t,e,s,function(t,e){o(t,0,e)})}):this.findINodeAndDirListing(t,e,o)},n.prototype.findINode=function(t,e,n){var r=this;this._findINode(t,be.dirname(e),be.basename(e),function(i,o){Ot(i,n)&&r.getINode(t,e,o,n)})},n.prototype.getINode=function(t,e,n,r){t.get(n,function(t,n){Ot(t,r)&&(void 0===n?r(ke.ENOENT(e)):r(null,_r.fromBuffer(n)))})},n.prototype.getDirListing=function(t,e,n,r){n.isDirectory()?t.get(n.id,function(t,n){if(Ot(t,r))try{r(null,JSON.parse(n.toString()))}catch(t){r(ke.ENOENT(e))}}):r(ke.ENOTDIR(e))},n.prototype.findINodeAndDirListing=function(t,e,n){var r=this;this.findINode(t,e,function(i,o){Ot(i,n)&&r.getDirListing(t,e,o,function(t,e){Ot(t,n)&&n(null,o,e)})})},n.prototype.addNewNode=function(t,e,n){var r,i=0,o=function(){5==++i?n(new ke(we.EIO,"Unable to commit data to key-value store.")):(r=It(),t.put(r,e,!1,function(t,e){t||!e?o():n(null,r)}))};o()},n.prototype.commitNewFile=function(e,n,r,i,o,s){var a=this,c=be.dirname(n),u=be.basename(n),f=(new Date).getTime();if("/"===n)return s(ke.EEXIST(n));this.findINodeAndDirListing(e,c,function(c,h,p){Ft(c,e,s)&&(p[u]?e.abort(function(){s(ke.EEXIST(n))}):a.addNewNode(e,o,function(n,c){if(Ft(n,e,s)){var l=new _r(c,o.length,i|r,f,f,f);a.addNewNode(e,l.toBuffer(),function(n,r){Ft(n,e,s)&&(p[u]=r,e.put(h.id,t.from(JSON.stringify(p)),!0,function(t){Ft(t,e,s)&&e.commit(function(t){Ft(t,e,s)&&s(null,l)})}))})}}))})},n.prototype.removeEntry=function(e,n,r){var i=this,o=this.store.beginTransaction("readwrite"),s=be.dirname(e),a=be.basename(e);this.findINodeAndDirListing(o,s,function(s,c,u){if(Ft(s,o,r))if(u[a]){var f=u[a];delete u[a],i.getINode(o,e,f,function(i,s){Ft(i,o,r)&&(!n&&s.isDirectory()?o.abort(function(){r(ke.EISDIR(e))}):n&&!s.isDirectory()?o.abort(function(){r(ke.ENOTDIR(e))}):o.del(s.id,function(e){Ft(e,o,r)&&o.del(f,function(e){Ft(e,o,r)&&o.put(c.id,t.from(JSON.stringify(u)),!0,function(t){Ft(t,o,r)&&o.commit(r)})})}))})}else o.abort(function(){r(ke.ENOENT(e))})})},n}(ze),kr=function(){this.store={}};kr.prototype.name=function(){return Ir.Name},kr.prototype.clear=function(){this.store={}},kr.prototype.beginTransaction=function(t){return new wr(this)},kr.prototype.get=function(t){return this.store[t]},kr.prototype.put=function(t,e,n){return!(!n&&this.store.hasOwnProperty(t))&&(this.store[t]=e,!0)},kr.prototype.del=function(t){delete this.store[t]};var Ir=function(t){function e(){t.call(this,{store:new kr})}return t&&(e.__proto__=t),e.prototype=Object.create(t&&t.prototype),e.prototype.constructor=e,e.Create=function(t,n){n(null,new e)},e}(br);Ir.Name="InMemory",Ir.Options={};var Or=Je.indexedDB||Je.mozIndexedDB||Je.webkitIndexedDB||Je.msIndexedDB,Fr=function(t,e){this.tx=t,this.store=e};Fr.prototype.get=function(t,e){try{var n=this.store.get(t);n.onerror=Rt(e),n.onsuccess=function(t){var n=t.target.result;void 0===n?e(null,n):e(null,b(n))}}catch(t){e(Nt(t))}};var Nr=function(t){function e(e,n){t.call(this,e,n)}return t&&(e.__proto__=t),e.prototype=Object.create(t&&t.prototype),e.prototype.constructor=e,e.prototype.put=function(t,e,n,r){try{var i,o=_(e);i=n?this.store.put(o,t):this.store.add(o,t),i.onerror=Rt(r),i.onsuccess=function(t){r(null,!0)}}catch(t){r(Nt(t))}},e.prototype.del=function(t,e){try{var n=this.store.delete(t);n.onerror=Rt(e),n.onsuccess=function(t){e()}}catch(t){e(Nt(t))}},e.prototype.commit=function(t){setTimeout(t,0)},e.prototype.abort=function(t){var e=null;try{this.tx.abort()}catch(t){e=Nt(t)}finally{t(e)}},e}(Fr),Rr=function(t,e){this.db=t,this.storeName=e};Rr.Create=function(t,e){var n=Or.open(t,1);n.onupgradeneeded=function(e){var n=e.target.result;n.objectStoreNames.contains(t)&&n.deleteObjectStore(t),n.createObjectStore(t)},n.onsuccess=function(n){e(null,new Rr(n.target.result,t))},n.onerror=Rt(e,we.EACCES)},Rr.prototype.name=function(){return Tr.Name+" - "+this.storeName},Rr.prototype.clear=function(t){try{var e=this.db.transaction(this.storeName,"readwrite"),n=e.objectStore(this.storeName),r=n.clear();r.onsuccess=function(e){setTimeout(t,0)},r.onerror=Rt(t)}catch(e){t(Nt(e))}},Rr.prototype.beginTransaction=function(t){void 0===t&&(t="readonly");var e=this.db.transaction(this.storeName,t),n=e.objectStore(this.storeName);if("readwrite"===t)return new Nr(e,n);if("readonly"===t)return new Fr(e,n);throw new ke(we.EINVAL,"Invalid transaction type.")};var Tr=function(t){function e(e){t.call(this),this.store=e}return t&&(e.__proto__=t),e.prototype=Object.create(t&&t.prototype),e.prototype.constructor=e,e.Create=function(t,n){Rr.Create(t.storeName?t.storeName:"browserfs",function(t,r){r?n(null,new e(r)):n(t)})},e.isAvailable=function(){try{return void 0!==Or&&null!==Or.open("__browserfs_test__")}catch(t){return!1}},e}(Er);Tr.Name="IndexedDB",Tr.Options={storeName:{type:"string",optional:!0,description:"The name of this file system. 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e(){t.call(this,{store:new Dr})}return t&&(e.__proto__=t),e.prototype=Object.create(t&&t.prototype),e.prototype.constructor=e,e.Create=function(t,n){n(null,new e)},e.isAvailable=function(){return void 0!==Je.localStorage},e}(br);Ar.Name="LocalStorage",Ar.Options={};var Pr=function(t){function e(e){t.call(this),this.mountList=[],this.mntMap={},this.rootFs=e}return t&&(e.__proto__=t),e.prototype=Object.create(t&&t.prototype),e.prototype.constructor=e,e.Create=function(t,n){Ir.Create({},function(r,i){if(i){var o=new e(i);try{Object.keys(t).forEach(function(e){o.mount(e,t[e])})}catch(r){return n(r)}n(null,o)}else n(r)})},e.isAvailable=function(){return!0},e.prototype.mount=function(t,e){if("/"!==t[0]&&(t="/"+t),t=be.resolve(t),this.mntMap[t])throw new ke(we.EINVAL,"Mount point "+t+" is already taken.");g(t,511,this.rootFs),this.mntMap[t]=e,this.mountList.push(t),this.mountList=this.mountList.sort(function(t,e){return e.length-t.length})},e.prototype.umount=function(t){var e=this;if("/"!==t[0]&&(t="/"+t),t=be.resolve(t),!this.mntMap[t])throw new ke(we.EINVAL,"Mount point "+t+" is already unmounted.");for(delete this.mntMap[t],this.mountList.splice(this.mountList.indexOf(t),1);"/"!==t&&0===e.rootFs.readdirSync(t).length;)e.rootFs.rmdirSync(t),t=be.dirname(t)},e.prototype._getFs=function(t){for(var e=this,n=this.mountList,r=n.length,i=0;i<r;i++){var o=n[i];if(o.length<=t.length&&0===t.indexOf(o))return t=t.substr(o.length>1?o.length:0),""===t&&(t="/"),{fs:e.mntMap[o],path:t}}return{fs:this.rootFs,path:t}},e.prototype.getName=function(){return e.Name},e.prototype.diskSpace=function(t,e){e(0,0)},e.prototype.isReadOnly=function(){return!1},e.prototype.supportsLinks=function(){return!1},e.prototype.supportsProps=function(){return!1},e.prototype.supportsSynch=function(){return!0},e.prototype.standardizeError=function(t,e,n){var r=t.message.indexOf(e);return-1!==r&&(t.message=t.message.substr(0,r)+n+t.message.substr(r+e.length),t.path=n),t},e.prototype.rename=function(t,e,n){var r=this,i=this._getFs(t),o=this._getFs(e);return i.fs===o.fs?i.fs.rename(i.path,o.path,function(s){s&&r.standardizeError(r.standardizeError(s,i.path,t),o.path,e),n(s)}):xe.readFile(t,function(r,i){if(r)return n(r);xe.writeFile(e,i,function(e){if(e)return n(e);xe.unlink(t,n)})})},e.prototype.renameSync=function(t,e){var n=this._getFs(t),r=this._getFs(e);if(n.fs===r.fs)try{return n.fs.renameSync(n.path,r.path)}catch(i){throw this.standardizeError(this.standardizeError(i,n.path,t),r.path,e),i}var i=xe.readFileSync(t);return xe.writeFileSync(e,i),xe.unlinkSync(t)},e.prototype.readdirSync=function(t){var e=this._getFs(t),n=null;if(e.fs!==this.rootFs)try{n=this.rootFs.readdirSync(t)}catch(t){}try{var r=e.fs.readdirSync(e.path);return null===n?r:r.concat(n.filter(function(t){return-1===r.indexOf(t)}))}catch(r){if(null===n)throw this.standardizeError(r,e.path,t);return n}},e.prototype.readdir=function(t,e){var n=this,r=this._getFs(t);r.fs.readdir(r.path,function(i,o){if(r.fs!==n.rootFs)try{var s=n.rootFs.readdirSync(t);o=o?o.concat(s.filter(function(t){return-1===o.indexOf(t)})):s}catch(o){if(i)return e(n.standardizeError(i,r.path,t))}else if(i)return e(n.standardizeError(i,r.path,t));e(null,o)})},e.prototype.rmdirSync=function(t){var e=this._getFs(t);if(this._containsMountPt(t))throw ke.ENOTEMPTY(t);try{e.fs.rmdirSync(e.path)}catch(n){throw this.standardizeError(n,e.path,t)}},e.prototype.rmdir=function(t,e){var n=this,r=this._getFs(t);this._containsMountPt(t)?e(ke.ENOTEMPTY(t)):r.fs.rmdir(r.path,function(i){e(i?n.standardizeError(i,r.path,t):null)})},e.prototype._containsMountPt=function(t){for(var e=this.mountList,n=e.length,r=0;r<n;r++){var i=e[r];if(i.length>=t.length&&i.slice(0,t.length)===t)return!0}return!1},e}(ze);Pr.Name="MountableFileSystem",Pr.Options={};for(var Cr=[["exists","unlink","readlink"],["stat","mkdir","realpath","truncate"],["open","readFile","chmod","utimes"],["chown"],["writeFile","appendFile"]],Ur=0;Ur<Cr.length;Ur++)for(var Mr=Cr[Ur],jr=0,Br=Mr;jr<Br.length;jr+=1){var zr=Br[jr];Pr.prototype[zr]=Tt(zr,!1,Ur+1),Pr.prototype[zr+"Sync"]=Tt(zr+"Sync",!0,Ur+1)}var qr=function(){this._locked=!1,this._waiters=[]};qr.prototype.lock=function(t){if(this._locked)return void this._waiters.push(t);this._locked=!0,t()},qr.prototype.unlock=function(){if(!this._locked)throw new Error("unlock of a non-locked mutex");var t=this._waiters.shift();if(t)return void tn(t);this._locked=!1},qr.prototype.tryLock=function(){return!this._locked&&(this._locked=!0,!0)},qr.prototype.isLocked=function(){return this._locked};var Vr=function(t){this._fs=t,this._mu=new qr};Vr.prototype.getName=function(){return"LockedFS<"+this._fs.getName()+">"},Vr.prototype.getFSUnlocked=function(){return this._fs},Vr.prototype.diskSpace=function(t,e){this._fs.diskSpace(t,e)},Vr.prototype.isReadOnly=function(){return this._fs.isReadOnly()},Vr.prototype.supportsLinks=function(){return this._fs.supportsLinks()},Vr.prototype.supportsProps=function(){return this._fs.supportsProps()},Vr.prototype.supportsSynch=function(){return this._fs.supportsSynch()},Vr.prototype.rename=function(t,e,n){var r=this;this._mu.lock(function(){r._fs.rename(t,e,function(t){r._mu.unlock(),n(t)})})},Vr.prototype.renameSync=function(t,e){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.renameSync(t,e)},Vr.prototype.stat=function(t,e,n){var r=this;this._mu.lock(function(){r._fs.stat(t,e,function(t,e){r._mu.unlock(),n(t,e)})})},Vr.prototype.statSync=function(t,e){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.statSync(t,e)},Vr.prototype.open=function(t,e,n,r){var i=this;this._mu.lock(function(){i._fs.open(t,e,n,function(t,e){i._mu.unlock(),r(t,e)})})},Vr.prototype.openSync=function(t,e,n){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.openSync(t,e,n)},Vr.prototype.unlink=function(t,e){var n=this;this._mu.lock(function(){n._fs.unlink(t,function(t){n._mu.unlock(),e(t)})})},Vr.prototype.unlinkSync=function(t){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.unlinkSync(t)},Vr.prototype.rmdir=function(t,e){var n=this;this._mu.lock(function(){n._fs.rmdir(t,function(t){n._mu.unlock(),e(t)})})},Vr.prototype.rmdirSync=function(t){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.rmdirSync(t)},Vr.prototype.mkdir=function(t,e,n){var r=this;this._mu.lock(function(){r._fs.mkdir(t,e,function(t){r._mu.unlock(),n(t)})})},Vr.prototype.mkdirSync=function(t,e){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.mkdirSync(t,e)},Vr.prototype.readdir=function(t,e){var n=this;this._mu.lock(function(){n._fs.readdir(t,function(t,r){n._mu.unlock(),e(t,r)})})},Vr.prototype.readdirSync=function(t){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.readdirSync(t)},Vr.prototype.exists=function(t,e){var n=this;this._mu.lock(function(){n._fs.exists(t,function(t){n._mu.unlock(),e(t)})})},Vr.prototype.existsSync=function(t){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.existsSync(t)},Vr.prototype.realpath=function(t,e,n){var r=this;this._mu.lock(function(){r._fs.realpath(t,e,function(t,e){r._mu.unlock(),n(t,e)})})},Vr.prototype.realpathSync=function(t,e){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.realpathSync(t,e)},Vr.prototype.truncate=function(t,e,n){var r=this;this._mu.lock(function(){r._fs.truncate(t,e,function(t){r._mu.unlock(),n(t)})})},Vr.prototype.truncateSync=function(t,e){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.truncateSync(t,e)},Vr.prototype.readFile=function(t,e,n,r){var i=this;this._mu.lock(function(){i._fs.readFile(t,e,n,function(t,e){i._mu.unlock(),r(t,e)})})},Vr.prototype.readFileSync=function(t,e,n){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.readFileSync(t,e,n)},Vr.prototype.writeFile=function(t,e,n,r,i,o){var s=this;this._mu.lock(function(){s._fs.writeFile(t,e,n,r,i,function(t){s._mu.unlock(),o(t)})})},Vr.prototype.writeFileSync=function(t,e,n,r,i){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.writeFileSync(t,e,n,r,i)},Vr.prototype.appendFile=function(t,e,n,r,i,o){var s=this;this._mu.lock(function(){s._fs.appendFile(t,e,n,r,i,function(t){s._mu.unlock(),o(t)})})},Vr.prototype.appendFileSync=function(t,e,n,r,i){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.appendFileSync(t,e,n,r,i)},Vr.prototype.chmod=function(t,e,n,r){var i=this;this._mu.lock(function(){i._fs.chmod(t,e,n,function(t){i._mu.unlock(),r(t)})})},Vr.prototype.chmodSync=function(t,e,n){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.chmodSync(t,e,n)},Vr.prototype.chown=function(t,e,n,r,i){var o=this;this._mu.lock(function(){o._fs.chown(t,e,n,r,function(t){o._mu.unlock(),i(t)})})},Vr.prototype.chownSync=function(t,e,n,r){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.chownSync(t,e,n,r)},Vr.prototype.utimes=function(t,e,n,r){var i=this;this._mu.lock(function(){i._fs.utimes(t,e,n,function(t){i._mu.unlock(),r(t)})})},Vr.prototype.utimesSync=function(t,e,n){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.utimesSync(t,e,n)},Vr.prototype.link=function(t,e,n){var r=this;this._mu.lock(function(){r._fs.link(t,e,function(t){r._mu.unlock(),n(t)})})},Vr.prototype.linkSync=function(t,e){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.linkSync(t,e)},Vr.prototype.symlink=function(t,e,n,r){var i=this;this._mu.lock(function(){i._fs.symlink(t,e,n,function(t){i._mu.unlock(),r(t)})})},Vr.prototype.symlinkSync=function(t,e,n){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.symlinkSync(t,e,n)},Vr.prototype.readlink=function(t,e){var n=this;this._mu.lock(function(){n._fs.readlink(t,function(t,r){n._mu.unlock(),e(t,r)})})},Vr.prototype.readlinkSync=function(t){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.readlinkSync(t)};var Wr="/.deletedFiles.log",Hr=function(t){function e(e,n,r,i,o){t.call(this,e,n,r,i,o)}return t&&(e.__proto__=t),e.prototype=Object.create(t&&t.prototype),e.prototype.constructor=e,e.prototype.sync=function(t){var e=this;if(!this.isDirty())return void t(null);this._fs._syncAsync(this,function(n){e.resetDirty(),t(n)})},e.prototype.syncSync=function(){this.isDirty()&&(this._fs._syncSync(this),this.resetDirty())},e.prototype.close=function(t){this.sync(t)},e.prototype.closeSync=function(){this.syncSync()},e}(We),Zr=function(t){function e(e,n){if(t.call(this),this._isInitialized=!1,this._initializeCallbacks=[],this._deletedFiles={},this._deleteLog="",this._deleteLogUpdatePending=!1,this._deleteLogUpdateNeeded=!1,this._deleteLogError=null,this._writable=e,this._readable=n,this._writable.isReadOnly())throw new ke(we.EINVAL,"Writable file system must be writable.")}return t&&(e.__proto__=t),e.prototype=Object.create(t&&t.prototype),e.prototype.constructor=e,e.isAvailable=function(){return!0},e.prototype.getOverlayedFileSystems=function(){return{readable:this._readable,writable:this._writable}},e.prototype._syncAsync=function(t,e){var n=this;this.createParentDirectoriesAsync(t.getPath(),function(r){if(r)return e(r);n._writable.writeFile(t.getPath(),t.getBuffer(),null,xt("w"),t.getStats().mode,e)})},e.prototype._syncSync=function(t){this.createParentDirectories(t.getPath()),this._writable.writeFileSync(t.getPath(),t.getBuffer(),null,xt("w"),t.getStats().mode)},e.prototype.getName=function(){return Yr.Name},e.prototype._initialize=function(t){var e=this,n=this._initializeCallbacks,r=function(t){e._isInitialized=!t,e._initializeCallbacks=[],n.forEach(function(e){return e(t)})};if(this._isInitialized)return t();n.push(t),1===n.length&&this._writable.readFile(Wr,"utf8",xt("r"),function(t,n){if(t){if(t.errno!==we.ENOENT)return r(t)}else e._deleteLog=n;e._reparseDeletionLog(),r()})},e.prototype.isReadOnly=function(){return!1},e.prototype.supportsSynch=function(){return this._readable.supportsSynch()&&this._writable.supportsSynch()},e.prototype.supportsLinks=function(){return!1},e.prototype.supportsProps=function(){return this._readable.supportsProps()&&this._writable.supportsProps()},e.prototype.getDeletionLog=function(){return this._deleteLog},e.prototype.restoreDeletionLog=function(t){this._deleteLog=t,this._reparseDeletionLog(),this.updateLog("")},e.prototype.rename=function(t,e,n){var r=this;if(this.checkInitAsync(n)&&!this.checkPathAsync(t,n)&&!this.checkPathAsync(e,n))return t===Wr||e===Wr?n(ke.EPERM("Cannot rename deletion log.")):t===e?n():void this.stat(t,!1,function(i,o){return i?n(i):r.stat(e,!1,function(i,s){function a(r){var i=r.shift();if(!i)return n();var o=be.resolve(t,i),s=be.resolve(e,i);c.rename(o,s,function(t){if(t)return n(t);a(r)})}var c=r,u=511;if(o.isDirectory()){if(i)return i.errno!==we.ENOENT?n(i):r._writable.exists(t,function(i){if(i)return r._writable.rename(t,e,n);r._writable.mkdir(e,u,function(e){if(e)return n(e);r._readable.readdir(t,function(t,e){if(t)return n();a(e)})})});if(u=s.mode,!s.isDirectory())return n(ke.ENOTDIR(e));r.readdir(e,function(i,o){if(o&&o.length)return n(ke.ENOTEMPTY(e));r._readable.readdir(t,function(t,e){if(t)return n();a(e)})})}if(s&&s.isDirectory())return n(ke.EISDIR(e));r.readFile(t,null,xt("r"),function(i,s){return i?n(i):r.writeFile(e,s,null,xt("w"),o.mode,function(e){return e?n(e):r.unlink(t,n)})})})})},e.prototype.renameSync=function(t,e){var n=this;if(this.checkInitialized(),this.checkPath(t),this.checkPath(e),t===Wr||e===Wr)throw ke.EPERM("Cannot rename deletion log.");var r=this.statSync(t,!1);if(r.isDirectory()){if(t===e)return;var i=511;if(this.existsSync(e)){var o=this.statSync(e,!1);if(i=o.mode,!o.isDirectory())throw ke.ENOTDIR(e);if(this.readdirSync(e).length>0)throw ke.ENOTEMPTY(e)}this._writable.existsSync(t)?this._writable.renameSync(t,e):this._writable.existsSync(e)||this._writable.mkdirSync(e,i),this._readable.existsSync(t)&&this._readable.readdirSync(t).forEach(function(r){n.renameSync(be.resolve(t,r),be.resolve(e,r))})}else{if(this.existsSync(e)&&this.statSync(e,!1).isDirectory())throw ke.EISDIR(e);this.writeFileSync(e,this.readFileSync(t,null,xt("r")),null,xt("w"),r.mode)}t!==e&&this.existsSync(t)&&this.unlinkSync(t)},e.prototype.stat=function(t,e,n){var r=this;this.checkInitAsync(n)&&this._writable.stat(t,e,function(i,o){i&&i.errno===we.ENOENT?(r._deletedFiles[t]&&n(ke.ENOENT(t)),r._readable.stat(t,e,function(t,e){e&&(e=Ne.clone(e),e.mode=Lt(e.mode)),n(t,e)})):n(i,o)})},e.prototype.statSync=function(t,e){this.checkInitialized();try{return this._writable.statSync(t,e)}catch(r){if(this._deletedFiles[t])throw ke.ENOENT(t);var n=Ne.clone(this._readable.statSync(t,e));return n.mode=Lt(n.mode),n}},e.prototype.open=function(t,e,n,r){var i=this;this.checkInitAsync(r)&&!this.checkPathAsync(t,r)&&this.stat(t,!1,function(o,s){if(s)switch(e.pathExistsAction()){case Ee.TRUNCATE_FILE:return i.createParentDirectoriesAsync(t,function(o){if(o)return r(o);i._writable.open(t,e,n,r)});case Ee.NOP:return i._writable.exists(t,function(o){o?i._writable.open(t,e,n,r):(s=Ne.clone(s),s.mode=n,i._readable.readFile(t,null,xt("r"),function(n,o){if(n)return r(n);-1===s.size&&(s.size=o.length);var a=new Hr(i,t,e,s,o);r(null,a)}))});default:return r(ke.EEXIST(t))}else switch(e.pathNotExistsAction()){case Ee.CREATE_FILE:return i.createParentDirectoriesAsync(t,function(o){return o?r(o):i._writable.open(t,e,n,r)});default:return r(ke.ENOENT(t))}})},e.prototype.openSync=function(t,e,n){if(this.checkInitialized(),this.checkPath(t),t===Wr)throw ke.EPERM("Cannot open deletion log.");if(this.existsSync(t))switch(e.pathExistsAction()){case Ee.TRUNCATE_FILE:return this.createParentDirectories(t),this._writable.openSync(t,e,n);case Ee.NOP:if(this._writable.existsSync(t))return this._writable.openSync(t,e,n);var r=this._readable.readFileSync(t,null,xt("r")),i=Ne.clone(this._readable.statSync(t,!1));return i.mode=n,new Hr(this,t,e,i,r);default:throw ke.EEXIST(t)}else switch(e.pathNotExistsAction()){case Ee.CREATE_FILE:return this.createParentDirectories(t),this._writable.openSync(t,e,n);default:throw ke.ENOENT(t)}},e.prototype.unlink=function(t,e){var n=this;this.checkInitAsync(e)&&!this.checkPathAsync(t,e)&&this.exists(t,function(r){if(!r)return e(ke.ENOENT(t));n._writable.exists(t,function(r){if(r)return n._writable.unlink(t,function(r){if(r)return e(r);n.exists(t,function(r){r&&n.deletePath(t),e(null)})});n.deletePath(t),e(null)})})},e.prototype.unlinkSync=function(t){if(this.checkInitialized(),this.checkPath(t),!this.existsSync(t))throw ke.ENOENT(t);this._writable.existsSync(t)&&this._writable.unlinkSync(t),this.existsSync(t)&&this.deletePath(t)},e.prototype.rmdir=function(t,e){var n=this;if(this.checkInitAsync(e)){var r=function(){n.readdir(t,function(r,i){return r?e(r):i.length?e(ke.ENOTEMPTY(t)):(n.deletePath(t),void e(null))})};this.exists(t,function(i){if(!i)return e(ke.ENOENT(t));n._writable.exists(t,function(i){i?n._writable.rmdir(t,function(i){if(i)return e(i);n._readable.exists(t,function(t){t?r():e()})}):r()})})}},e.prototype.rmdirSync=function(t){if(this.checkInitialized(),!this.existsSync(t))throw ke.ENOENT(t);if(this._writable.existsSync(t)&&this._writable.rmdirSync(t),this.existsSync(t)){if(this.readdirSync(t).length>0)throw ke.ENOTEMPTY(t);this.deletePath(t)}},e.prototype.mkdir=function(t,e,n){var r=this;this.checkInitAsync(n)&&this.exists(t,function(i){if(i)return n(ke.EEXIST(t));r.createParentDirectoriesAsync(t,function(i){if(i)return n(i);r._writable.mkdir(t,e,n)})})},e.prototype.mkdirSync=function(t,e){if(this.checkInitialized(),this.existsSync(t))throw ke.EEXIST(t);this.createParentDirectories(t),this._writable.mkdirSync(t,e)},e.prototype.readdir=function(t,e){var n=this;this.checkInitAsync(e)&&this.stat(t,!1,function(r,i){return r?e(r):i.isDirectory()?void n._writable.readdir(t,function(r,i){if(r&&"ENOENT"!==r.code)return e(r);!r&&i||(i=[]),n._readable.readdir(t,function(r,o){!r&&o||(o=[]);var s={},a=i.concat(o.filter(function(e){return!n._deletedFiles[t+"/"+e]})).filter(function(t){var e=!s[t];return s[t]=!0,e});e(null,a)})}):e(ke.ENOTDIR(t))})},e.prototype.readdirSync=function(t){var e=this;if(this.checkInitialized(),!this.statSync(t,!1).isDirectory())throw ke.ENOTDIR(t);var n=[];try{n=n.concat(this._writable.readdirSync(t))}catch(t){}try{n=n.concat(this._readable.readdirSync(t).filter(function(n){return!e._deletedFiles[t+"/"+n]}))}catch(t){}var r={};return n.filter(function(t){var e=!r[t];return r[t]=!0,e})},e.prototype.exists=function(t,e){var n=this;this.checkInitialized(),this._writable.exists(t,function(r){if(r)return e(!0);n._readable.exists(t,function(r){e(r&&!0!==n._deletedFiles[t])})})},e.prototype.existsSync=function(t){return this.checkInitialized(),this._writable.existsSync(t)||this._readable.existsSync(t)&&!0!==this._deletedFiles[t]},e.prototype.chmod=function(t,e,n,r){var i=this;this.checkInitAsync(r)&&this.operateOnWritableAsync(t,function(o){if(o)return r(o);i._writable.chmod(t,e,n,r)})},e.prototype.chmodSync=function(t,e,n){var r=this;this.checkInitialized(),this.operateOnWritable(t,function(){r._writable.chmodSync(t,e,n)})},e.prototype.chown=function(t,e,n,r,i){var o=this;this.checkInitAsync(i)&&this.operateOnWritableAsync(t,function(s){if(s)return i(s);o._writable.chown(t,e,n,r,i)})},e.prototype.chownSync=function(t,e,n,r){var i=this;this.checkInitialized(),this.operateOnWritable(t,function(){i._writable.chownSync(t,e,n,r)})},e.prototype.utimes=function(t,e,n,r){var i=this;this.checkInitAsync(r)&&this.operateOnWritableAsync(t,function(o){if(o)return r(o);i._writable.utimes(t,e,n,r)})},e.prototype.utimesSync=function(t,e,n){var r=this;this.checkInitialized(),this.operateOnWritable(t,function(){r._writable.utimesSync(t,e,n)})},e.prototype.deletePath=function(t){this._deletedFiles[t]=!0,this.updateLog("d"+t+"\n")},e.prototype.updateLog=function(t){var e=this;this._deleteLog+=t,this._deleteLogUpdatePending?this._deleteLogUpdateNeeded=!0:(this._deleteLogUpdatePending=!0,this._writable.writeFile(Wr,this._deleteLog,"utf8",Oe.getFileFlag("w"),420,function(t){e._deleteLogUpdatePending=!1,t?e._deleteLogError=t:e._deleteLogUpdateNeeded&&(e._deleteLogUpdateNeeded=!1,e.updateLog(""))}))},e.prototype._reparseDeletionLog=function(){var t=this;this._deletedFiles={},this._deleteLog.split("\n").forEach(function(e){t._deletedFiles[e.slice(1)]="d"===e.slice(0,1)})},e.prototype.checkInitialized=function(){if(!this._isInitialized)throw new ke(we.EPERM,"OverlayFS is not initialized. Please initialize OverlayFS using its initialize() method before using it.");if(null!==this._deleteLogError){var t=this._deleteLogError;throw this._deleteLogError=null,t}},e.prototype.checkInitAsync=function(t){if(!this._isInitialized)return t(new ke(we.EPERM,"OverlayFS is not initialized. Please initialize OverlayFS using its initialize() method before using it.")),!1;if(null!==this._deleteLogError){var e=this._deleteLogError;return this._deleteLogError=null,t(e),!1}return!0},e.prototype.checkPath=function(t){if(t===Wr)throw ke.EPERM(t)},e.prototype.checkPathAsync=function(t,e){return t===Wr&&(e(ke.EPERM(t)),!0)},e.prototype.createParentDirectoriesAsync=function(t,e){function n(t,e){t?(o.push(i),i=be.dirname(i),s._writable.stat(i,!1,n)):r()}function r(){if(!o.length)return e();var t=o.pop();s._readable.stat(t,!1,function(n,i){if(!i)return e();s._writable.mkdir(t,i.mode,function(t){if(t)return e(t);r()})})}var i=be.dirname(t),o=[],s=this;this._writable.stat(i,!1,n)},e.prototype.createParentDirectories=function(t){for(var e=this,n=be.dirname(t),r=[];!this._writable.existsSync(n);)r.push(n),n=be.dirname(n);r=r.reverse(),r.forEach(function(t){e._writable.mkdirSync(t,e.statSync(t,!1).mode)})},e.prototype.operateOnWritable=function(t,e){if(!this.existsSync(t))throw ke.ENOENT(t);this._writable.existsSync(t)||this.copyToWritable(t),e()},e.prototype.operateOnWritableAsync=function(t,e){var n=this;this.exists(t,function(r){if(!r)return e(ke.ENOENT(t));n._writable.exists(t,function(r){if(!r)return n.copyToWritableAsync(t,e);e()})})},e.prototype.copyToWritable=function(t){var e=this.statSync(t,!1);e.isDirectory()?this._writable.mkdirSync(t,e.mode):this.writeFileSync(t,this._readable.readFileSync(t,null,xt("r")),null,xt("w"),this.statSync(t,!1).mode)},e.prototype.copyToWritableAsync=function(t,e){var n=this;this.stat(t,!1,function(r,i){return r?e(r):i.isDirectory()?n._writable.mkdir(t,i.mode,e):void n._readable.readFile(t,null,xt("r"),function(r,o){if(r)return e(r);n.writeFile(t,o,null,xt("w"),i.mode,e)})})},e}(ze),Yr=function(t){function e(e,n){t.call(this,new Zr(e,n))}return t&&(e.__proto__=t),e.prototype=Object.create(t&&t.prototype),e.prototype.constructor=e,e.Create=function(t,n){try{var r=new 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ci,ui=n(35).inflateRaw,fi={};!function(t){t[t.MSDOS=0]="MSDOS",t[t.AMIGA=1]="AMIGA",t[t.OPENVMS=2]="OPENVMS",t[t.UNIX=3]="UNIX",t[t.VM_CMS=4]="VM_CMS",t[t.ATARI_ST=5]="ATARI_ST",t[t.OS2_HPFS=6]="OS2_HPFS",t[t.MAC=7]="MAC",t[t.Z_SYSTEM=8]="Z_SYSTEM",t[t.CP_M=9]="CP_M",t[t.NTFS=10]="NTFS",t[t.MVS=11]="MVS",t[t.VSE=12]="VSE",t[t.ACORN_RISC=13]="ACORN_RISC",t[t.VFAT=14]="VFAT",t[t.ALT_MVS=15]="ALT_MVS",t[t.BEOS=16]="BEOS",t[t.TANDEM=17]="TANDEM",t[t.OS_400=18]="OS_400",t[t.OSX=19]="OSX"}(ci||(ci={}));var hi;!function(t){t[t.STORED=0]="STORED",t[t.SHRUNK=1]="SHRUNK",t[t.REDUCED_1=2]="REDUCED_1",t[t.REDUCED_2=3]="REDUCED_2",t[t.REDUCED_3=4]="REDUCED_3",t[t.REDUCED_4=5]="REDUCED_4",t[t.IMPLODE=6]="IMPLODE",t[t.DEFLATE=8]="DEFLATE",t[t.DEFLATE64=9]="DEFLATE64",t[t.TERSE_OLD=10]="TERSE_OLD",t[t.BZIP2=12]="BZIP2",t[t.LZMA=14]="LZMA",t[t.TERSE_NEW=18]="TERSE_NEW",t[t.LZ77=19]="LZ77",t[t.WAVPACK=97]="WAVPACK",t[t.PPMD=98]="PPMD"}(hi||(hi={}));var pi=function(t){if(this.data=t,67324752!==t.readUInt32LE(0))throw new ke(we.EINVAL,"Invalid Zip file: Local file header has invalid signature: "+this.data.readUInt32LE(0))};pi.prototype.versionNeeded=function(){return this.data.readUInt16LE(4)},pi.prototype.flags=function(){return this.data.readUInt16LE(6)},pi.prototype.compressionMethod=function(){return this.data.readUInt16LE(8)},pi.prototype.lastModFileTime=function(){return oe(this.data.readUInt16LE(10),this.data.readUInt16LE(12))},pi.prototype.rawLastModFileTime=function(){return this.data.readUInt32LE(10)},pi.prototype.crc32=function(){return this.data.readUInt32LE(14)},pi.prototype.fileNameLength=function(){return this.data.readUInt16LE(26)},pi.prototype.extraFieldLength=function(){return this.data.readUInt16LE(28)},pi.prototype.fileName=function(){return se(this.data,this.useUTF8(),30,this.fileNameLength())},pi.prototype.extraField=function(){var t=30+this.fileNameLength();return this.data.slice(t,t+this.extraFieldLength())},pi.prototype.totalSize=function(){return 30+this.fileNameLength()+this.extraFieldLength()},pi.prototype.useUTF8=function(){return 2048==(2048&this.flags())};var li=function(t,e,n){this.header=t,this.record=e,this.data=n};li.prototype.decompress=function(){var t=this.header.compressionMethod(),e=fi[t];if(e)return e(this.data,this.record.compressedSize(),this.record.uncompressedSize(),this.record.flag());var n=hi[t];throw n||(n="Unknown: "+t),new ke(we.EINVAL,"Invalid compression method on file '"+this.header.fileName()+"': "+n)},li.prototype.getHeader=function(){return this.header},li.prototype.getRecord=function(){return this.record},li.prototype.getRawData=function(){return this.data};var di=function(t){this.data=t};di.prototype.crc32=function(){return this.data.readUInt32LE(0)},di.prototype.compressedSize=function(){return this.data.readUInt32LE(4)},di.prototype.uncompressedSize=function(){return this.data.readUInt32LE(8)};var yi=function(t){if(this.data=t,134630224!==this.data.readUInt32LE(0))throw new ke(we.EINVAL,"Invalid archive extra data record signature: "+this.data.readUInt32LE(0))};yi.prototype.length=function(){return this.data.readUInt32LE(4)},yi.prototype.extraFieldData=function(){return this.data.slice(8,8+this.length())};var gi=function(t){if(this.data=t,84233040!==this.data.readUInt32LE(0))throw new ke(we.EINVAL,"Invalid digital signature signature: "+this.data.readUInt32LE(0))};gi.prototype.size=function(){return this.data.readUInt16LE(4)},gi.prototype.signatureData=function(){return this.data.slice(6,6+this.size())};var _i=function(t,e){if(this.zipData=t,this.data=e,33639248!==this.data.readUInt32LE(0))throw new ke(we.EINVAL,"Invalid Zip file: Central directory record has invalid signature: "+this.data.readUInt32LE(0));this._filename=this.produceFilename()};_i.prototype.versionMadeBy=function(){return this.data.readUInt16LE(4)},_i.prototype.versionNeeded=function(){return this.data.readUInt16LE(6)},_i.prototype.flag=function(){return this.data.readUInt16LE(8)},_i.prototype.compressionMethod=function(){return this.data.readUInt16LE(10)},_i.prototype.lastModFileTime=function(){return oe(this.data.readUInt16LE(12),this.data.readUInt16LE(14))},_i.prototype.rawLastModFileTime=function(){return this.data.readUInt32LE(12)},_i.prototype.crc32=function(){return this.data.readUInt32LE(16)},_i.prototype.compressedSize=function(){return this.data.readUInt32LE(20)},_i.prototype.uncompressedSize=function(){return this.data.readUInt32LE(24)},_i.prototype.fileNameLength=function(){return this.data.readUInt16LE(28)},_i.prototype.extraFieldLength=function(){return this.data.readUInt16LE(30)},_i.prototype.fileCommentLength=function(){return this.data.readUInt16LE(32)},_i.prototype.diskNumberStart=function(){return this.data.readUInt16LE(34)},_i.prototype.internalAttributes=function(){return this.data.readUInt16LE(36)},_i.prototype.externalAttributes=function(){return this.data.readUInt32LE(38)},_i.prototype.headerRelativeOffset=function(){return this.data.readUInt32LE(42)},_i.prototype.produceFilename=function(){return se(this.data,this.useUTF8(),46,this.fileNameLength()).replace(/\\/g,"/")},_i.prototype.fileName=function(){return this._filename},_i.prototype.rawFileName=function(){return this.data.slice(46,46+this.fileNameLength())},_i.prototype.extraField=function(){var t=44+this.fileNameLength();return this.data.slice(t,t+this.extraFieldLength())},_i.prototype.fileComment=function(){var t=46+this.fileNameLength()+this.extraFieldLength();return se(this.data,this.useUTF8(),t,this.fileCommentLength())},_i.prototype.rawFileComment=function(){var t=46+this.fileNameLength()+this.extraFieldLength();return this.data.slice(t,t+this.fileCommentLength())},_i.prototype.totalSize=function(){return 46+this.fileNameLength()+this.extraFieldLength()+this.fileCommentLength()},_i.prototype.isDirectory=function(){var t=this.fileName();return!!(16&this.externalAttributes())||"/"===t.charAt(t.length-1)},_i.prototype.isFile=function(){return!this.isDirectory()},_i.prototype.useUTF8=function(){return 2048==(2048&this.flag())},_i.prototype.isEncrypted=function(){return 1==(1&this.flag())},_i.prototype.getFileData=function(){var t=this.headerRelativeOffset(),e=new pi(this.zipData.slice(t));return new li(e,this,this.zipData.slice(t+e.totalSize()))},_i.prototype.getData=function(){return this.getFileData().decompress()},_i.prototype.getRawData=function(){return this.getFileData().getRawData()},_i.prototype.getStats=function(){return new Ne(Fe.FILE,this.uncompressedSize(),365,new Date,this.lastModFileTime())};var mi=function(t){if(this.data=t,101010256!==this.data.readUInt32LE(0))throw new ke(we.EINVAL,"Invalid Zip file: End of central directory record has invalid signature: "+this.data.readUInt32LE(0))};mi.prototype.diskNumber=function(){return this.data.readUInt16LE(4)},mi.prototype.cdDiskNumber=function(){return this.data.readUInt16LE(6)},mi.prototype.cdDiskEntryCount=function(){return this.data.readUInt16LE(8)},mi.prototype.cdTotalEntryCount=function(){return this.data.readUInt16LE(10)},mi.prototype.cdSize=function(){return this.data.readUInt32LE(12)},mi.prototype.cdOffset=function(){return this.data.readUInt32LE(16)},mi.prototype.cdZipCommentLength=function(){return this.data.readUInt16LE(20)},mi.prototype.cdZipComment=function(){return se(this.data,!0,22,this.cdZipCommentLength())},mi.prototype.rawCdZipComment=function(){return this.data.slice(22,22+this.cdZipCommentLength())};var wi=function(t,e,n,r){this.index=t,this.directoryEntries=e,this.eocd=n,this.data=r},vi=function(t){function e(e,n){void 0===n&&(n=""),t.call(this),this.name=n,this._index=new ri,this._directoryEntries=[],this._eocd=null,this._index=e.index,this._directoryEntries=e.directoryEntries,this._eocd=e.eocd,this.data=e.data}return t&&(e.__proto__=t),e.prototype=Object.create(t&&t.prototype),e.prototype.constructor=e,e.Create=function(t,n){try{e._computeIndex(t.zipData,function(r,i){if(i){var o=new e(i,t.name);n(null,o)}else n(r)})}catch(t){n(t)}},e.isAvailable=function(){return!0},e.RegisterDecompressionMethod=function(t,e){fi[t]=e},e._getEOCD=function(t){for(var e=Math.min(65557,t.length-1),n=22;n<e;n++)if(101010256===t.readUInt32LE(t.length-n))return new mi(t.slice(t.length-n));throw new ke(we.EINVAL,"Invalid ZIP file: Could not locate End of Central Directory signature.")},e._addToIndex=function(t,e){var n=t.fileName();if("/"===n.charAt(0))throw new ke(we.EPERM,"Unexpectedly encountered an absolute path in a zip file. Please file a bug.");"/"===n.charAt(n.length-1)&&(n=n.substr(0,n.length-1)),t.isDirectory()?e.addPathFast("/"+n,new oi(t)):e.addPathFast("/"+n,new ii(t))},e._computeIndex=function(t,n){try{var r=new ri,i=e._getEOCD(t);if(i.diskNumber()!==i.cdDiskNumber())return n(new ke(we.EINVAL,"ZipFS does not support spanned zip files."));var o=i.cdOffset();if(4294967295===o)return n(new ke(we.EINVAL,"ZipFS does not support Zip64."));var s=o+i.cdSize();e._computeIndexResponsive(t,r,o,s,n,[],i)}catch(t){n(t)}},e._computeIndexResponsiveTrampoline=function(t,n,r,i,o,s,a){try{e._computeIndexResponsive(t,n,r,i,o,s,a)}catch(t){o(t)}},e._computeIndexResponsive=function(t,n,r,i,o,s,a){if(r<i){for(var c=0;c++<200&&r<i;){var u=new _i(t,t.slice(r));e._addToIndex(u,n),r+=u.totalSize(),s.push(u)}tn(function(){e._computeIndexResponsiveTrampoline(t,n,r,i,o,s,a)})}else o(null,new wi(n,s,a,t))},e.prototype.getName=function(){return e.Name+(""!==this.name?" "+this.name:"")},e.prototype.getCentralDirectoryEntry=function(t){var e=this._index.getInode(t);if(null===e)throw ke.ENOENT(t);if(ee(e))return e.getData();if(ne(e))return e.getData();throw ke.EPERM("Invalid inode: "+e)},e.prototype.getCentralDirectoryEntryAt=function(t){var e=this._directoryEntries[t];if(!e)throw new RangeError("Invalid directory index: "+t+".");return e},e.prototype.getNumberOfCentralDirectoryEntries=function(){return this._directoryEntries.length},e.prototype.getEndOfCentralDirectory=function(){return this._eocd},e.prototype.diskSpace=function(t,e){e(this.data.length,0)},e.prototype.isReadOnly=function(){return!0},e.prototype.supportsLinks=function(){return!1},e.prototype.supportsProps=function(){return!1},e.prototype.supportsSynch=function(){return!0},e.prototype.statSync=function(t,e){var n=this._index.getInode(t);if(null===n)throw ke.ENOENT(t);var r;if(ee(n))r=n.getData().getStats();else{if(!ne(n))throw new ke(we.EINVAL,"Invalid inode.");r=n.getStats()}return r},e.prototype.openSync=function(t,e,n){if(e.isWriteable())throw new ke(we.EPERM,t);var r=this._index.getInode(t);if(!r)throw ke.ENOENT(t);if(!ee(r))throw ke.EISDIR(t);var i=r.getData(),o=i.getStats();switch(e.pathExistsAction()){case Ee.THROW_EXCEPTION:case Ee.TRUNCATE_FILE:throw ke.EEXIST(t);case Ee.NOP:return new He(this,t,e,o,i.getData());default:throw new ke(we.EINVAL,"Invalid FileMode object.")}},e.prototype.readdirSync=function(t){var e=this._index.getInode(t);if(e){if(ne(e))return e.getListing();throw ke.ENOTDIR(t)}throw ke.ENOENT(t)},e.prototype.readFileSync=function(t,e,n){var r=this.openSync(t,n,420);try{var i=r,o=i.getBuffer();return null===e?S(o):o.toString(e)}finally{r.closeSync()}},e}(qe);vi.Name="ZipFS",vi.Options={zipData:{type:"object",description:"The zip file as a Buffer object.",validator:k},name:{type:"string",optional:!0,description:"The name of the zip file (optional)."}},vi.CompressionMethod=hi,vi.RegisterDecompressionMethod(hi.DEFLATE,function(t,e,n){return w(ui(t.slice(0,e),{chunkSize:n}))}),vi.RegisterDecompressionMethod(hi.STORED,function(t,e,n){return S(t,0,n)});var bi=function(t){this._data=t};bi.prototype.type=function(){return this._data[0]},bi.prototype.standardIdentifier=function(){return ae(this._data,1,5)},bi.prototype.version=function(){return this._data[6]},bi.prototype.data=function(){return this._data.slice(7,2048)};var Si=function(t){function e(e){t.call(this,e),this._root=null}return t&&(e.__proto__=t),e.prototype=Object.create(t&&t.prototype),e.prototype.constructor=e,e.prototype.systemIdentifier=function(){return this._getString32(8)},e.prototype.volumeIdentifier=function(){return this._getString32(40)},e.prototype.volumeSpaceSize=function(){return this._data.readUInt32LE(80)},e.prototype.volumeSetSize=function(){return this._data.readUInt16LE(120)},e.prototype.volumeSequenceNumber=function(){return this._data.readUInt16LE(124)},e.prototype.logicalBlockSize=function(){return this._data.readUInt16LE(128)},e.prototype.pathTableSize=function(){return this._data.readUInt32LE(132)},e.prototype.locationOfTypeLPathTable=function(){return this._data.readUInt32LE(140)},e.prototype.locationOfOptionalTypeLPathTable=function(){return this._data.readUInt32LE(144)},e.prototype.locationOfTypeMPathTable=function(){return this._data.readUInt32BE(148)},e.prototype.locationOfOptionalTypeMPathTable=function(){return this._data.readUInt32BE(152)},e.prototype.rootDirectoryEntry=function(t){return null===this._root&&(this._root=this._constructRootDirectoryRecord(this._data.slice(156)),this._root.rootCheckForRockRidge(t)),this._root},e.prototype.volumeSetIdentifier=function(){return this._getString(190,128)},e.prototype.publisherIdentifier=function(){return this._getString(318,128)},e.prototype.dataPreparerIdentifier=function(){return this._getString(446,128)},e.prototype.applicationIdentifier=function(){return this._getString(574,128)},e.prototype.copyrightFileIdentifier=function(){return this._getString(702,38)},e.prototype.abstractFileIdentifier=function(){return this._getString(740,36)},e.prototype.bibliographicFileIdentifier=function(){return this._getString(776,37)},e.prototype.volumeCreationDate=function(){return ue(this._data,813)},e.prototype.volumeModificationDate=function(){return ue(this._data,830)},e.prototype.volumeExpirationDate=function(){return ue(this._data,847)},e.prototype.volumeEffectiveDate=function(){return ue(this._data,864)},e.prototype.fileStructureVersion=function(){return this._data[881]},e.prototype.applicationUsed=function(){return this._data.slice(883,1395)},e.prototype.reserved=function(){return this._data.slice(1395,2048)},e.prototype._getString32=function(t){return this._getString(t,32)},e}(bi),Ei=function(t){function e(e){if(t.call(this,e),1!==this.type())throw new ke(we.EIO,"Invalid primary volume descriptor.")}return t&&(e.__proto__=t),e.prototype=Object.create(t&&t.prototype),e.prototype.constructor=e,e.prototype.name=function(){return"ISO9660"},e.prototype._constructRootDirectoryRecord=function(t){return new Oi(t,-1)},e.prototype._getString=function(t,e){return this._getString(t,e)},e}(Si),ki=function(t){function e(e){if(t.call(this,e),2!==this.type())throw new ke(we.EIO,"Invalid supplementary volume descriptor.");var n=this.escapeSequence(),r=n[2];if(37!==n[0]||47!==n[1]||64!==r&&67!==r&&69!==r)throw new ke(we.EIO,"Unrecognized escape sequence for SupplementaryVolumeDescriptor: "+n.toString())}return t&&(e.__proto__=t),e.prototype=Object.create(t&&t.prototype),e.prototype.constructor=e,e.prototype.name=function(){return"Joliet"},e.prototype.escapeSequence=function(){return this._data.slice(88,120)},e.prototype._constructRootDirectoryRecord=function(t){return new Fi(t,-1)},e.prototype._getString=function(t,e){return ce(this._data,t,e)},e}(Si),Ii=function(t,e){this._suEntries=null,this._fileOrDir=null,this._data=t,this._rockRidgeOffset=e};Ii.prototype.hasRockRidge=function(){return this._rockRidgeOffset>-1},Ii.prototype.getRockRidgeOffset=function(){return this._rockRidgeOffset},Ii.prototype.rootCheckForRockRidge=function(t){var e=this.getDirectory(t);this._rockRidgeOffset=e.getDotEntry(t)._getRockRidgeOffset(t),this._rockRidgeOffset>-1&&(this._fileOrDir=null)},Ii.prototype.length=function(){return this._data[0]},Ii.prototype.extendedAttributeRecordLength=function(){return this._data[1]},Ii.prototype.lba=function(){return 2048*this._data.readUInt32LE(2)},Ii.prototype.dataLength=function(){return this._data.readUInt32LE(10)},Ii.prototype.recordingDate=function(){return fe(this._data,18)},Ii.prototype.fileFlags=function(){return this._data[25]},Ii.prototype.fileUnitSize=function(){return this._data[26]},Ii.prototype.interleaveGapSize=function(){return this._data[27]},Ii.prototype.volumeSequenceNumber=function(){return this._data.readUInt16LE(28)},Ii.prototype.identifier=function(){return this._getString(33,this._data[32])},Ii.prototype.fileName=function(t){if(this.hasRockRidge()){var e=this._rockRidgeFilename(t);if(null!==e)return e}var n=this.identifier();if(this.isDirectory(t))return n;var r=n.indexOf(";");return-1===r?n:"."===n[r-1]?n.slice(0,r-1):n.slice(0,r)},Ii.prototype.isDirectory=function(t){var e=!!(2&this.fileFlags());return!e&&this.hasRockRidge()&&(e=this.getSUEntries(t).filter(function(t){return t instanceof zi}).length>0),e},Ii.prototype.isSymlink=function(t){return this.hasRockRidge()&&this.getSUEntries(t).filter(function(t){return t instanceof Mi}).length>0},Ii.prototype.getSymlinkPath=function(t){for(var e="",n=this.getSUEntries(t),r=this._getGetString(),i=0,o=n;i<o.length;i+=1){var s=o[i];if(s instanceof Mi){for(var a=s.componentRecords(),c=0,u=a;c<u.length;c+=1){var f=u[c],h=f.flags();2&h?e+="./":4&h?e+="../":8&h?e+="/":(e+=f.content(r),1&h||(e+="/"))}if(!s.continueFlag())break}}return e.length>1&&"/"===e[e.length-1]?e.slice(0,e.length-1):e},Ii.prototype.getFile=function(t){if(this.isDirectory(t))throw new Error("Tried to get a File from a directory.");return null===this._fileOrDir&&(this._fileOrDir=t.slice(this.lba(),this.lba()+this.dataLength())),this._fileOrDir},Ii.prototype.getDirectory=function(t){if(!this.isDirectory(t))throw new Error("Tried to get a Directory from a file.");return null===this._fileOrDir&&(this._fileOrDir=this._constructDirectory(t)),this._fileOrDir},Ii.prototype.getSUEntries=function(t){return this._suEntries||this._constructSUEntries(t),this._suEntries},Ii.prototype._rockRidgeFilename=function(t){var e=this.getSUEntries(t).filter(function(t){return t instanceof Bi});if(0===e.length||6&e[0].flags())return null;for(var n="",r=this._getGetString(),i=0,o=e;i<o.length;i+=1){var s=o[i];if(n+=s.name(r),!(1&s.flags()))break}return n},Ii.prototype._constructSUEntries=function(t){var e=33+this._data[32];e%2==1&&e++,e+=this._rockRidgeOffset,this._suEntries=pe(this._data,e,this.length(),t)},Ii.prototype._getRockRidgeOffset=function(t){this._rockRidgeOffset=0;var e=this.getSUEntries(t);if(e.length>0){var n=e[0];if(n instanceof Li&&n.checkBytesPass())for(var r=1;r<e.length;r++){var i=e[r];if(i instanceof Pi||i instanceof Di&&"IEEE_P1282"===i.extensionIdentifier())return n.bytesSkipped()}}return this._rockRidgeOffset=-1,-1};var Oi=function(t){function e(e,n){t.call(this,e,n)}return t&&(e.__proto__=t),e.prototype=Object.create(t&&t.prototype),e.prototype.constructor=e,e.prototype._getString=function(t,e){return ae(this._data,t,e)},e.prototype._constructDirectory=function(t){return new Yi(this,t)},e.prototype._getGetString=function(){return ae},e}(Ii),Fi=function(t){function e(e,n){t.call(this,e,n)}return 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t;c--,p+=i[s++]<<l,l+=8}if(n.nlen=257+(31&p),p>>>=5,l-=5,n.ndist=1+(31&p),p>>>=5,l-=5,n.ncode=4+(15&p),p>>>=4,l-=4,n.nlen>286||n.ndist>30){t.msg="too many length or distance symbols",n.mode=pt;break}n.have=0,n.mode=tt;case tt:for(;n.have<n.ncode;){for(;l<3;){if(0===c)break t;c--,p+=i[s++]<<l,l+=8}n.lens[Nt[n.have++]]=7&p,p>>>=3,l-=3}for(;n.have<19;)n.lens[Nt[n.have++]]=0;if(n.lencode=n.lendyn,n.lenbits=7,kt={bits:n.lenbits},Et=S(E,n.lens,0,19,n.lencode,0,n.work,kt),n.lenbits=kt.bits,Et){t.msg="invalid code lengths set",n.mode=pt;break}n.have=0,n.mode=et;case et:for(;n.have<n.nlen+n.ndist;){for(;Ot=n.lencode[p&(1<<n.lenbits)-1],gt=Ot>>>24,_t=Ot>>>16&255,mt=65535&Ot,!(gt<=l);){if(0===c)break t;c--,p+=i[s++]<<l,l+=8}if(mt<16)p>>>=gt,l-=gt,n.lens[n.have++]=mt;else{if(16===mt){for(It=gt+2;l<It;){if(0===c)break t;c--,p+=i[s++]<<l,l+=8}if(p>>>=gt,l-=gt,0===n.have){t.msg="invalid bit length repeat",n.mode=pt;break}St=n.lens[n.have-1],g=3+(3&p),p>>>=2,l-=2}else if(17===mt){for(It=gt+3;l<It;){if(0===c)break t;c--,p+=i[s++]<<l,l+=8}p>>>=gt,l-=gt,St=0,g=3+(7&p),p>>>=3,l-=3}else{for(It=gt+7;l<It;){if(0===c)break t;c--,p+=i[s++]<<l,l+=8}p>>>=gt,l-=gt,St=0,g=11+(127&p),p>>>=7,l-=7}if(n.have+g>n.nlen+n.ndist){t.msg="invalid bit length repeat",n.mode=pt;break}for(;g--;)n.lens[n.have++]=St}}if(n.mode===pt)break;if(0===n.lens[256]){t.msg="invalid code -- missing end-of-block",n.mode=pt;break}if(n.lenbits=9,kt={bits:n.lenbits},Et=S(k,n.lens,0,n.nlen,n.lencode,0,n.work,kt),n.lenbits=kt.bits,Et){t.msg="invalid literal/lengths set",n.mode=pt;break}if(n.distbits=6,n.distcode=n.distdyn,kt={bits:n.distbits},Et=S(I,n.lens,n.nlen,n.ndist,n.distcode,0,n.work,kt),n.distbits=kt.bits,Et){t.msg="invalid distances set",n.mode=pt;break}if(n.mode=nt,e===N)break t;case nt:n.mode=rt;case rt:if(c>=6&&u>=258){t.next_out=a,t.avail_out=u,t.next_in=s,t.avail_in=c,n.hold=p,n.bits=l,b(t,y),a=t.next_out,o=t.output,u=t.avail_out,s=t.next_in,i=t.input,c=t.avail_in,p=n.hold,l=n.bits,n.mode===X&&(n.back=-1);break}for(n.back=0;Ot=n.lencode[p&(1<<n.lenbits)-1],gt=Ot>>>24,_t=Ot>>>16&255,mt=65535&Ot,!(gt<=l);){if(0===c)break t;c--,p+=i[s++]<<l,l+=8}if(_t&&0==(240&_t)){for(wt=gt,vt=_t,bt=mt;Ot=n.lencode[bt+((p&(1<<wt+vt)-1)>>wt)],gt=Ot>>>24,_t=Ot>>>16&255,mt=65535&Ot,!(wt+gt<=l);){if(0===c)break t;c--,p+=i[s++]<<l,l+=8}p>>>=wt,l-=wt,n.back+=wt}if(p>>>=gt,l-=gt,n.back+=gt,n.length=mt,0===_t){n.mode=ct;break}if(32&_t){n.back=-1,n.mode=X;break}if(64&_t){t.msg="invalid literal/length code",n.mode=pt;break}n.extra=15&_t,n.mode=it;case it:if(n.extra){for(It=n.extra;l<It;){if(0===c)break t;c--,p+=i[s++]<<l,l+=8}n.length+=p&(1<<n.extra)-1,p>>>=n.extra,l-=n.extra,n.back+=n.extra}n.was=n.length,n.mode=ot;case ot:for(;Ot=n.distcode[p&(1<<n.distbits)-1],gt=Ot>>>24,_t=Ot>>>16&255,mt=65535&Ot,!(gt<=l);){if(0===c)break t;c--,p+=i[s++]<<l,l+=8}if(0==(240&_t)){for(wt=gt,vt=_t,bt=mt;Ot=n.distcode[bt+((p&(1<<wt+vt)-1)>>wt)],gt=Ot>>>24,_t=Ot>>>16&255,mt=65535&Ot,!(wt+gt<=l);){if(0===c)break t;c--,p+=i[s++]<<l,l+=8}p>>>=wt,l-=wt,n.back+=wt}if(p>>>=gt,l-=gt,n.back+=gt,64&_t){t.msg="invalid distance code",n.mode=pt;break}n.offset=mt,n.extra=15&_t,n.mode=st;case st:if(n.extra){for(It=n.extra;l<It;){if(0===c)break t;c--,p+=i[s++]<<l,l+=8}n.offset+=p&(1<<n.extra)-1,p>>>=n.extra,l-=n.extra,n.back+=n.extra}if(n.offset>n.dmax){t.msg="invalid distance too far back",n.mode=pt;break}n.mode=at;case at:if(0===u)break t;if(g=y-u,n.offset>g){if((g=n.offset-g)>n.whave&&n.sane){t.msg="invalid distance too far back",n.mode=pt;break}g>n.wnext?(g-=n.wnext,_=n.wsize-g):_=n.wnext-g,g>n.length&&(g=n.length),yt=n.window}else yt=o,_=a-n.offset,g=n.length;g>u&&(g=u),u-=g,n.length-=g;do{o[a++]=yt[_++]}while(--g);0===n.length&&(n.mode=rt);break;case ct:if(0===u)break t;o[a++]=n.length,u--,n.mode=rt;break;case ut:if(n.wrap){for(;l<32;){if(0===c)break t;c--,p|=i[s++]<<l,l+=8}if(y-=u,t.total_out+=y,n.total+=y,y&&(t.adler=n.check=n.flags?v(n.check,o,y,a-y):w(n.check,o,y,a-y)),y=u,(n.flags?p:r(p))!==n.check){t.msg="incorrect data check",n.mode=pt;break}p=0,l=0}n.mode=ft;case ft:if(n.wrap&&n.flags){for(;l<32;){if(0===c)break t;c--,p+=i[s++]<<l,l+=8}if(p!==(4294967295&n.total)){t.msg="incorrect length check",n.mode=pt;break}p=0,l=0}n.mode=ht;case ht:Et=T;break t;case pt:Et=D;break t;case lt:return A;case dt:default:return x}return t.next_out=a,t.avail_out=u,t.next_in=s,t.avail_in=c,n.hold=p,n.bits=l,(n.wsize||y!==t.avail_out&&n.mode<pt&&(n.mode<ut||e!==O))&&h(t,t.output,t.next_out,y-t.avail_out)?(n.mode=lt,A):(d-=t.avail_in,y-=t.avail_out,t.total_in+=d,t.total_out+=y,n.total+=y,n.wrap&&y&&(t.adler=n.check=n.flags?v(n.check,o,y,t.next_out-y):w(n.check,o,y,t.next_out-y)),t.data_type=n.bits+(n.last?64:0)+(n.mode===X?128:0)+(n.mode===nt||n.mode===G?256:0),(0===d&&0===y||e===O)&&Et===R&&(Et=P),Et)}function l(t){if(!t||!t.state)return x;var e=t.state;return e.window&&(e.window=null),t.state=null,R}function d(t,e){var n;return t&&t.state?(n=t.state,0==(2&n.wrap)?x:(n.head=e,e.done=!1,R)):x}function y(t,e){var n,r,i=e.length;return t&&t.state?(n=t.state,0!==n.wrap&&n.mode!==Y?x:n.mode===Y&&(r=1,(r=w(r,e,i,0))!==n.check)?D:h(t,e,i,i)?(n.mode=lt,A):(n.havedict=1,R)):x}var g,_,m=n(8),w=n(37),v=n(38),b=n(39),S=n(40),E=0,k=1,I=2,O=4,F=5,N=6,R=0,T=1,L=2,x=-2,D=-3,A=-4,P=-5,C=8,U=1,M=2,j=3,B=4,z=5,q=6,V=7,W=8,H=9,Z=10,Y=11,X=12,J=13,K=14,G=15,Q=16,$=17,tt=18,et=19,nt=20,rt=21,it=22,ot=23,st=24,at=25,ct=26,ut=27,ft=28,ht=29,pt=30,lt=31,dt=32,yt=852,gt=592,_t=15,mt=!0;e.inflateReset=s,e.inflateReset2=a,e.inflateResetKeep=o,e.inflateInit=u,e.inflateInit2=c,e.inflate=p,e.inflateEnd=l,e.inflateGetHeader=d,e.inflateSetDictionary=y,e.inflateInfo="pako inflate (from Nodeca project)"},function(t,e,n){"use strict";function r(t,e,n,r){for(var i=65535&t|0,o=t>>>16&65535|0,s=0;0!==n;){s=n>2e3?2e3:n,n-=s;do{i=i+e[r++]|0,o=o+i|0}while(--s);i%=65521,o%=65521}return i|o<<16|0}t.exports=r},function(t,e,n){"use strict";function r(t,e,n,r){var o=i,s=r+n;t^=-1;for(var a=r;a<s;a++)t=t>>>8^o[255&(t^e[a])];return-1^t}var i=function(){for(var t,e=[],n=0;n<256;n++){t=n;for(var r=0;r<8;r++)t=1&t?3988292384^t>>>1:t>>>1;e[n]=t}return e}();t.exports=r},function(t,e,n){"use strict";t.exports=function(t,e){var n,r,i,o,s,a,c,u,f,h,p,l,d,y,g,_,m,w,v,b,S,E,k,I,O;n=t.state,r=t.next_in,I=t.input,i=r+(t.avail_in-5),o=t.next_out,O=t.output,s=o-(e-t.avail_out),a=o+(t.avail_out-257),c=n.dmax,u=n.wsize,f=n.whave,h=n.wnext,p=n.window,l=n.hold,d=n.bits,y=n.lencode,g=n.distcode,_=(1<<n.lenbits)-1,m=(1<<n.distbits)-1;t:do{d<15&&(l+=I[r++]<<d,d+=8,l+=I[r++]<<d,d+=8),w=y[l&_];e:for(;;){if(v=w>>>24,l>>>=v,d-=v,0===(v=w>>>16&255))O[o++]=65535&w;else{if(!(16&v)){if(0==(64&v)){w=y[(65535&w)+(l&(1<<v)-1)];continue e}if(32&v){n.mode=12;break t}t.msg="invalid literal/length code",n.mode=30;break t}b=65535&w,v&=15,v&&(d<v&&(l+=I[r++]<<d,d+=8),b+=l&(1<<v)-1,l>>>=v,d-=v),d<15&&(l+=I[r++]<<d,d+=8,l+=I[r++]<<d,d+=8),w=g[l&m];n:for(;;){if(v=w>>>24,l>>>=v,d-=v,!(16&(v=w>>>16&255))){if(0==(64&v)){w=g[(65535&w)+(l&(1<<v)-1)];continue n}t.msg="invalid distance code",n.mode=30;break t}if(S=65535&w,v&=15,d<v&&(l+=I[r++]<<d,(d+=8)<v&&(l+=I[r++]<<d,d+=8)),(S+=l&(1<<v)-1)>c){t.msg="invalid distance too far back",n.mode=30;break t}if(l>>>=v,d-=v,v=o-s,S>v){if((v=S-v)>f&&n.sane){t.msg="invalid distance too far back",n.mode=30;break t}if(E=0,k=p,0===h){if(E+=u-v,v<b){b-=v;do{O[o++]=p[E++]}while(--v);E=o-S,k=O}}else if(h<v){if(E+=u+h-v,(v-=h)<b){b-=v;do{O[o++]=p[E++]}while(--v);if(E=0,h<b){v=h,b-=v;do{O[o++]=p[E++]}while(--v);E=o-S,k=O}}}else if(E+=h-v,v<b){b-=v;do{O[o++]=p[E++]}while(--v);E=o-S,k=O}for(;b>2;)O[o++]=k[E++],O[o++]=k[E++],O[o++]=k[E++],b-=3;b&&(O[o++]=k[E++],b>1&&(O[o++]=k[E++]))}else{E=o-S;do{O[o++]=O[E++],O[o++]=O[E++],O[o++]=O[E++],b-=3}while(b>2);b&&(O[o++]=O[E++],b>1&&(O[o++]=O[E++]))}break}}break}}while(r<i&&o<a);b=d>>3,r-=b,d-=b<<3,l&=(1<<d)-1,t.next_in=r,t.next_out=o,t.avail_in=r<i?i-r+5:5-(r-i),t.avail_out=o<a?a-o+257:257-(o-a),n.hold=l,n.bits=d}},function(t,e,n){"use strict";var r=n(8),i=[3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258,0,0],o=[16,16,16,16,16,16,16,16,17,17,17,17,18,18,18,18,19,19,19,19,20,20,20,20,21,21,21,21,16,72,78],s=[1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0],a=[16,16,16,16,17,17,18,18,19,19,20,20,21,21,22,22,23,23,24,24,25,25,26,26,27,27,28,28,29,29,64,64];t.exports=function(t,e,n,c,u,f,h,p){var l,d,y,g,_,m,w,v,b,S=p.bits,E=0,k=0,I=0,O=0,F=0,N=0,R=0,T=0,L=0,x=0,D=null,A=0,P=new r.Buf16(16),C=new r.Buf16(16),U=null,M=0;for(E=0;E<=15;E++)P[E]=0;for(k=0;k<c;k++)P[e[n+k]]++;for(F=S,O=15;O>=1&&0===P[O];O--);if(F>O&&(F=O),0===O)return u[f++]=20971520,u[f++]=20971520,p.bits=1,0;for(I=1;I<O&&0===P[I];I++);for(F<I&&(F=I),T=1,E=1;E<=15;E++)if(T<<=1,(T-=P[E])<0)return-1;if(T>0&&(0===t||1!==O))return-1;for(C[1]=0,E=1;E<15;E++)C[E+1]=C[E]+P[E];for(k=0;k<c;k++)0!==e[n+k]&&(h[C[e[n+k]]++]=k);if(0===t?(D=U=h,m=19):1===t?(D=i,A-=257,U=o,M-=257,m=256):(D=s,U=a,m=-1),x=0,k=0,E=I,_=f,N=F,R=0,y=-1,L=1<<F,g=L-1,1===t&&L>852||2===t&&L>592)return 1;for(;;){w=E-R,h[k]<m?(v=0,b=h[k]):h[k]>m?(v=U[M+h[k]],b=D[A+h[k]]):(v=96,b=0),l=1<<E-R,d=1<<N,I=d;do{d-=l,u[_+(x>>R)+d]=w<<24|v<<16|b|0}while(0!==d);for(l=1<<E-1;x&l;)l>>=1;if(0!==l?(x&=l-1,x+=l):x=0,k++,0==--P[E]){if(E===O)break;E=e[n+h[k]]}if(E>F&&(x&g)!==y){for(0===R&&(R=F),_+=I,N=E-R,T=1<<N;N+R<O&&!((T-=P[N+R])<=0);)N++,T<<=1;if(L+=1<<N,1===t&&L>852||2===t&&L>592)return 1;y=x&g,u[y]=F<<24|N<<16|_-f|0}}return 0!==x&&(u[_+x]=E-R<<24|64<<16|0),p.bits=F,0}},function(t,e,n){"use strict";function r(t,e){if(e<65537&&(t.subarray&&s||!t.subarray&&o))return String.fromCharCode.apply(null,i.shrinkBuf(t,e));for(var n="",r=0;r<e;r++)n+=String.fromCharCode(t[r]);return n}var i=n(8),o=!0,s=!0;try{String.fromCharCode.apply(null,[0])}catch(t){o=!1}try{String.fromCharCode.apply(null,new Uint8Array(1))}catch(t){s=!1}for(var a=new i.Buf8(256),c=0;c<256;c++)a[c]=c>=252?6:c>=248?5:c>=240?4:c>=224?3:c>=192?2:1;a[254]=a[254]=1,e.string2buf=function(t){var e,n,r,o,s,a=t.length,c=0;for(o=0;o<a;o++)n=t.charCodeAt(o),55296==(64512&n)&&o+1<a&&56320==(64512&(r=t.charCodeAt(o+1)))&&(n=65536+(n-55296<<10)+(r-56320),o++),c+=n<128?1:n<2048?2:n<65536?3:4;for(e=new i.Buf8(c),s=0,o=0;s<c;o++)n=t.charCodeAt(o),55296==(64512&n)&&o+1<a&&56320==(64512&(r=t.charCodeAt(o+1)))&&(n=65536+(n-55296<<10)+(r-56320),o++),n<128?e[s++]=n:n<2048?(e[s++]=192|n>>>6,e[s++]=128|63&n):n<65536?(e[s++]=224|n>>>12,e[s++]=128|n>>>6&63,e[s++]=128|63&n):(e[s++]=240|n>>>18,e[s++]=128|n>>>12&63,e[s++]=128|n>>>6&63,e[s++]=128|63&n);return e},e.buf2binstring=function(t){return r(t,t.length)},e.binstring2buf=function(t){for(var e=new i.Buf8(t.length),n=0,r=e.length;n<r;n++)e[n]=t.charCodeAt(n);return e},e.buf2string=function(t,e){var n,i,o,s,c=e||t.length,u=new Array(2*c);for(i=0,n=0;n<c;)if((o=t[n++])<128)u[i++]=o;else if((s=a[o])>4)u[i++]=65533,n+=s-1;else{for(o&=2===s?31:3===s?15:7;s>1&&n<c;)o=o<<6|63&t[n++],s--;s>1?u[i++]=65533:o<65536?u[i++]=o:(o-=65536,u[i++]=55296|o>>10&1023,u[i++]=56320|1023&o)}return r(u,i)},e.utf8border=function(t,e){var n;for(e=e||t.length,e>t.length&&(e=t.length),n=e-1;n>=0&&128==(192&t[n]);)n--;return n<0?e:0===n?e:n+a[t[n]]>e?n:e}},function(t,e,n){"use strict";t.exports={Z_NO_FLUSH:0,Z_PARTIAL_FLUSH:1,Z_SYNC_FLUSH:2,Z_FULL_FLUSH:3,Z_FINISH:4,Z_BLOCK:5,Z_TREES:6,Z_OK:0,Z_STREAM_END:1,Z_NEED_DICT:2,Z_ERRNO:-1,Z_STREAM_ERROR:-2,Z_DATA_ERROR:-3,Z_BUF_ERROR:-5,Z_NO_COMPRESSION:0,Z_BEST_SPEED:1,Z_BEST_COMPRESSION:9,Z_DEFAULT_COMPRESSION:-1,Z_FILTERED:1,Z_HUFFMAN_ONLY:2,Z_RLE:3,Z_FIXED:4,Z_DEFAULT_STRATEGY:0,Z_BINARY:0,Z_TEXT:1,Z_UNKNOWN:2,Z_DEFLATED:8}},function(t,e,n){"use strict";t.exports={2:"need dictionary",1:"stream end",0:"","-1":"file error","-2":"stream error","-3":"data error","-4":"insufficient memory","-5":"buffer error","-6":"incompatible version"}},function(t,e,n){"use strict";function r(){this.input=null,this.next_in=0,this.avail_in=0,this.total_in=0,this.output=null,this.next_out=0,this.avail_out=0,this.total_out=0,this.msg="",this.state=null,this.data_type=2,this.adler=0}t.exports=r},function(t,e,n){"use strict";function r(){this.text=0,this.time=0,this.xflags=0,this.os=0,this.extra=null,this.extra_len=0,this.name="",this.comment="",this.hcrc=0,this.done=!1}t.exports=r}])});
+//# sourceMappingURL=browserfs.min.js.map
\ No newline at end of file
diff --git a/index.html b/index.html
index 7df7dd3542..9cf2e13472 100644
--- a/index.html
+++ b/index.html
@@ -31,6 +31,7 @@
 		<link rel="stylesheet" id="theme-link"/>
 		<link rel="stylesheet" href="assets/css/pygment_trac.css">
 		<link rel="icon" type="x-icon" href="icon.png">
+		<script src="assets/js/browserfs.min.js"></script>
 		<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
 	</head>
 	<body>
@@ -76,9 +77,16 @@
           document.head.appendChild(app)
         }
 				window.onload = () => {
-					let app = document.createElement('script')
-					app.setAttribute('src', versions[versionToLoad])
-					document.body.appendChild(app)
+					BrowserFS.install(window)
+					BrowserFS.configure({
+						fs: "LocalStorage"
+					}, function(e) {
+						if (e) console.log(e)
+						let app = document.createElement('script')
+						app.setAttribute('src', versions[versionToLoad])
+						document.body.appendChild(app)
+						window.remixFileSystem = require('fs')
+					})
 				}				
 		</script>
 	</body>
diff --git a/src/app.js b/src/app.js
index 54c9b0e9f5..97c15480c0 100644
--- a/src/app.js
+++ b/src/app.js
@@ -12,15 +12,13 @@ var { OffsetToLineColumnConverter } = require('./lib/offsetToLineColumnConverter
 var QueryParams = require('./lib/query-params')
 var GistHandler = require('./lib/gist-handler')
 var Storage = remixLib.Storage
-var LocalStorageProvider = require('./app/files/localStorageProvider')
 var RemixDProvider = require('./app/files/remixDProvider')
 var Config = require('./config')
 var Renderer = require('./app/ui/renderer')
 var examples = require('./app/editor/example-contracts')
 var modalDialogCustom = require('./app/ui/modal-dialog-custom')
 var FileManager = require('./app/files/fileManager')
-var ReadonlyProvider = require('./app/files/readonlyProvider')
-var BasicFileProvider = require('./app/files/basicFileProvider')
+var FileProvider = require('./app/files/fileProvider')
 var toolTip = require('./app/ui/tooltip')
 var CompilerMetadata = require('./app/files/compiler-metadata')
 var CompilerImport = require('./app/compiler/compiler-imports')
@@ -113,7 +111,7 @@ class App {
 
     // load file system
     self._components.filesProviders = {}
-    self._components.filesProviders['browser'] = new LocalStorageProvider(fileStorage)
+    self._components.filesProviders['browser'] = new FileProvider('browser', fileStorage)
     registry.put({api: self._components.filesProviders['browser'], name: 'fileproviders/browser'})
 
     var remixd = new Remixd(65520)
@@ -123,17 +121,7 @@ class App {
     })
 
     self._components.filesProviders['localhost'] = new RemixDProvider(remixd)
-    self._components.filesProviders['swarm'] = new ReadonlyProvider('swarm')
-    self._components.filesProviders['github'] = new ReadonlyProvider('github')
-    self._components.filesProviders['gist'] = new BasicFileProvider('gist')
-    self._components.filesProviders['ipfs'] = new ReadonlyProvider('ipfs')
-    self._components.filesProviders['https'] = new ReadonlyProvider('https')
-    self._components.filesProviders['http'] = new ReadonlyProvider('http')
     registry.put({api: self._components.filesProviders['localhost'], name: 'fileproviders/localhost'})
-    registry.put({api: self._components.filesProviders['swarm'], name: 'fileproviders/swarm'})
-    registry.put({api: self._components.filesProviders['github'], name: 'fileproviders/github'})
-    registry.put({api: self._components.filesProviders['gist'], name: 'fileproviders/gist'})
-    registry.put({api: self._components.filesProviders['ipfs'], name: 'fileproviders/ipfs'})
     registry.put({api: self._components.filesProviders, name: 'fileproviders'})
 
     self._view = {}
@@ -297,10 +285,8 @@ Please make a backup of your contracts and start using http://remix.ethereum.org
     editor,
     registry.get('config').api,
     new Renderer(),
-    registry.get('fileproviders/swarm').api,
-    registry.get('fileproviders/ipfs').api,
-    registry.get('filemanager').api,
-    registry.get('fileproviders').api,
+    registry.get('fileproviders/browser').api,
+    registry.get('filemanager').api
   )
   const run = new RunTab(
     udapp,
@@ -352,14 +338,11 @@ Please make a backup of your contracts and start using http://remix.ethereum.org
   const loadedFromGist = gistHandler.loadFromGist(queryParams.get(), fileManager)
   if (!loadedFromGist) {
     // insert ballot contract if there are no files to show
-    self._components.filesProviders['browser'].resolveDirectory('browser', (error, filesList) => {
+    self._components.filesProviders['browser'].resolveDirectory('/', (error, filesList) => {
       if (error) console.error(error)
       if (Object.keys(filesList).length === 0) {
-        if (!self._components.filesProviders['browser'].set(examples.ballot.name, examples.ballot.content)) {
-          modalDialogCustom.alert('Failed to store example contract in browser. Remix will not work properly. Please ensure Remix has access to LocalStorage. Safari in Private mode is known not to work.')
-        } else {
-          self._components.filesProviders['browser'].set(examples.ballot_test.name, examples.ballot_test.content)
-        }
+        fileManager.setFile(examples.ballot.name, examples.ballot.content)
+        fileManager.setFile(examples.ballot_test.name, examples.ballot_test.content)
       }
     })
   }
diff --git a/src/app/files/basicFileProvider.js b/src/app/files/basicFileProvider.js
deleted file mode 100644
index e3c4f74c09..0000000000
--- a/src/app/files/basicFileProvider.js
+++ /dev/null
@@ -1,119 +0,0 @@
-'use strict'
-const EventManager = require('../../lib/events')
-const toolTip = require('../ui/tooltip')
-
-class BasicFileProvider {
-  constructor (type) {
-    this.event = new EventManager()
-    this.files = {}
-    this.paths = {}
-    this.normalizedNames = {} // contains the raw url associated with the displayed path
-    this.paths[type] = {}
-    this.type = type
-    this.readonly = true
-  }
-
-  close (cb) {
-    this.files = {}
-    cb()
-  }
-
-  init (cb) {
-    this.files = {}
-  }
-
-  exists (path, cb) {
-    if (!this.files) return cb(null, false)
-    var unprefixedPath = this.removePrefix(path)
-    cb(null, this.files[unprefixedPath] !== undefined)
-  }
-
-  get (path, cb) {
-    if (this.normalizedNames[path]) path = this.normalizedNames[path] // ensure we actually use the normalized path from here
-    var unprefixedPath = this.removePrefix(path)
-    var content = this.files[unprefixedPath]
-    if (!content) {
-      content = this.files[this.type + '/' + this.normalizedNames[path]]
-    }
-    if (cb) {
-      cb(null, content)
-    }
-    return content
-  }
-
-  set (path, content, cb) {
-    this.addReadOnly(path, content)
-    if (cb) cb()
-    return true
-  }
-
-  addReadOnly (path, content, rawPath) {
-    path = this.removePrefix(path)
-    try { // lazy try to format JSON
-      content = JSON.stringify(JSON.parse(content), null, '\t')
-    } catch (e) {}
-    if (!rawPath) rawPath = path
-    // splitting off the path in a tree structure, the json tree is used in `resolveDirectory`
-    var split = path
-    var folder = false
-    while (split.lastIndexOf('/') !== -1) {
-      var subitem = split.substring(split.lastIndexOf('/'))
-      split = split.substring(0, split.lastIndexOf('/'))
-      if (!this.paths[this.type + '/' + split]) {
-        this.paths[this.type + '/' + split] = {}
-      }
-      this.paths[this.type + '/' + split][split + subitem] = { isDirectory: folder }
-      folder = true
-    }
-    this.paths[this.type][split] = { isDirectory: folder }
-    this.files[path] = content
-    this.normalizedNames[rawPath] = path
-    this.event.trigger('fileAdded', [this.type + '/' + path, true])
-    return true
-  }
-
-  remove (path) {
-    var unprefixedPath = this.removePrefix(path)
-    var folderPath = path.substring(0, path.lastIndexOf('/'))
-    if (this.paths[folderPath]) {
-      delete this.paths[folderPath][unprefixedPath]
-      delete this.files[path]
-    }
-    this.event.trigger('fileRemoved', [this.type + '/' + unprefixedPath])
-    return true
-  }
-
-  rename (oldPath, newPath, isFolder) {
-    if (isFolder) { return toolTip('folder renaming is not handled by this explorer') }
-    var unprefixedoldPath = this.removePrefix(oldPath)
-    var unprefixednewPath = this.removePrefix(newPath)
-    this.get(oldPath, (error, content) => {
-      if (error) return console.log(error)
-      this.remove(oldPath)
-      this.set(newPath, content)
-      this.event.trigger('fileRenamed', [this.type + '/' + unprefixedoldPath, this.type + '/' + unprefixednewPath, isFolder])
-    })
-  }
-
-  isReadOnly (path) {
-    return false
-  }
-
-  list () {
-    return this.files
-  }
-
-  resolveDirectory (path, callback) {
-    var self = this
-    if (path[0] === '/') path = path.substring(1)
-    if (!path) return callback(null, { [self.type]: { } })
-    // we just return the json tree populated by `addReadOnly`
-    callback(null, this.paths[path])
-  }
-
-  removePrefix (path) {
-    return path.indexOf(this.type + '/') === 0 ? path.replace(this.type + '/', '') : path
-  }
-}
-
-module.exports = BasicFileProvider
diff --git a/src/app/files/compiler-metadata.js b/src/app/files/compiler-metadata.js
index c0a1703543..69974afc58 100644
--- a/src/app/files/compiler-metadata.js
+++ b/src/app/files/compiler-metadata.js
@@ -18,6 +18,11 @@ class CompilerMetadata extends Plugin {
     self.fileManager = fileManager
     self.config = config
     self.networks = ['VM:-', 'main:1', 'ropsten:3', 'rinkeby:4', 'kovan:42', 'görli:5', 'Custom']
+    self.innerPath = 'artifacts'
+  }
+
+  _JSONFileName (path, contractName) {
+    return path + '/' + this.innerPath + '/' + contractName + '.json'
   }
 
   onActivation () {
@@ -31,7 +36,7 @@ class CompilerMetadata extends Plugin {
         compiler.visitContracts((contract) => {
           if (contract.file !== source.target) return
 
-          var fileName = path + '/' + contract.name + '.json'
+          var fileName = self._JSONFileName(path, contract.name)
           provider.get(fileName, (error, content) => {
             if (!error) {
               content = content || '{}'
@@ -96,7 +101,7 @@ class CompilerMetadata extends Plugin {
           if (err) {
             console.log(err)
           } else {
-            var fileName = path + '/' + contractName + '.json'
+            var fileName = self._JSONFileName(path, contractName)
             provider.get(fileName, (error, content) => {
               if (error) return reject(error)
               if (!content) return resolve()
diff --git a/src/app/files/file-explorer.js b/src/app/files/file-explorer.js
index 6cea03215e..a2841a4ed4 100644
--- a/src/app/files/file-explorer.js
+++ b/src/app/files/file-explorer.js
@@ -97,6 +97,7 @@ function fileExplorer (localRegistry, files, menuItems) {
   files.event.register('fileRenamed', fileRenamed)
   files.event.register('fileRenamedError', fileRenamedError)
   files.event.register('fileAdded', fileAdded)
+  files.event.register('folderAdded', folderAdded)
 
   function fileRenamedError (error) {
     modalDialogCustom.alert(error)
@@ -124,6 +125,18 @@ function fileExplorer (localRegistry, files, menuItems) {
     })
   }
 
+  function folderAdded (folderpath) {
+    self.ensureRoot(() => {
+      folderpath = folderpath.split('/').slice(0, -1).join('/')
+      self.files.resolveDirectory(folderpath, (error, fileTree) => {
+        if (error) console.error(error)
+        if (!fileTree) return
+        fileTree = normalize(folderpath, fileTree)
+        self.treeView.updateNodeFromJSON(folderpath, fileTree, true)
+      })
+    })
+  }
+
   function fileRemoved (filepath) {
     var label = self.treeView.labelAt(filepath)
     if (label && label.parentElement) {
@@ -462,7 +475,7 @@ fileExplorer.prototype.toGist = function (id) {
 // return all the files, except the temporary/readonly ones..
 fileExplorer.prototype.packageFiles = function (filesProvider, callback) {
   var ret = {}
-  filesProvider.resolveDirectory(filesProvider.type, (error, files) => {
+  filesProvider.resolveDirectory('/', (error, files) => {
     if (error) callback(error)
     else {
       async.eachSeries(Object.keys(files), (path, cb) => {
@@ -525,7 +538,7 @@ fileExplorer.prototype.updateGist = function () {
 
 fileExplorer.prototype.createNewFile = function () {
   let self = this
-  modalDialogCustom.prompt('Create new file', 'File Name', 'Untitled.sol', (input) => {
+  modalDialogCustom.prompt('Create new file', 'File Path (Untitled.sol, Folder1/Untitled.sol)', 'Untitled.sol', (input) => {
     helper.createNonClashingName(input, self.files, (error, newName) => {
       if (error) return modalDialogCustom.alert('Failed to create file ' + newName + ' ' + error)
       if (!self.files.set(newName, '')) {
@@ -568,18 +581,16 @@ fileExplorer.prototype.ensureRoot = function (cb) {
   cb = cb || (() => {})
   var self = this
   if (self.element) return cb()
-
-  self.files.resolveDirectory('/', (error, files) => {
-    if (error) console.error(error)
-    var element = self.treeView.render(files, false)
-    element.classList.add(css.fileexplorer)
-    element.events = self.events
-    element.api = self.api
-    self.container.appendChild(element)
-    self.element = element
-    if (cb) cb()
-    self.treeView.expand(self.files.type)
-  })
+  const root = {}
+  root[this.files.type] = {}
+  var element = self.treeView.render(root, false)
+  element.classList.add(css.fileexplorer)
+  element.events = self.events
+  element.api = self.api
+  self.container.appendChild(element)
+  self.element = element
+  if (cb) cb()
+  self.treeView.expand(self.files.type)
 }
 
 function normalize (path, filesList) {
diff --git a/src/app/files/fileManager.js b/src/app/files/fileManager.js
index 26452bcdbc..88ca3ff8d5 100644
--- a/src/app/files/fileManager.js
+++ b/src/app/files/fileManager.js
@@ -47,16 +47,13 @@ class FileManager extends Plugin {
       config: this._components.registry.get('config').api,
       browserExplorer: this._components.registry.get('fileproviders/browser').api,
       localhostExplorer: this._components.registry.get('fileproviders/localhost').api,
-      gistExplorer: this._components.registry.get('fileproviders/gist').api,
       filesProviders: this._components.registry.get('fileproviders').api
     }
 
     this._deps.browserExplorer.event.register('fileRenamed', (oldName, newName, isFolder) => { this.fileRenamedEvent(oldName, newName, isFolder) })
     this._deps.localhostExplorer.event.register('fileRenamed', (oldName, newName, isFolder) => { this.fileRenamedEvent(oldName, newName, isFolder) })
-    this._deps.gistExplorer.event.register('fileRenamed', (oldName, newName, isFolder) => { this.fileRenamedEvent(oldName, newName, isFolder) })
     this._deps.browserExplorer.event.register('fileRemoved', (path) => { this.fileRemovedEvent(path) })
     this._deps.localhostExplorer.event.register('fileRemoved', (path) => { this.fileRemovedEvent(path) })
-    this._deps.gistExplorer.event.register('fileRemoved', (path) => { this.fileRemovedEvent(path) })
     this._deps.localhostExplorer.event.register('errored', (event) => { this.removeTabsOf(this._deps.localhostExplorer) })
     this._deps.localhostExplorer.event.register('closed', (event) => { this.removeTabsOf(this._deps.localhostExplorer) })
   }
@@ -309,18 +306,10 @@ class FileManager extends Plugin {
   }
 
   fileProviderOf (file) {
-    if (!file) return null
-    var provider = file.match(/[^/]*/)
-    if (provider !== null && this._deps.filesProviders[provider[0]]) {
-      return this._deps.filesProviders[provider[0]]
-    } else {
-      for (var handler of this._components.compilerImport.handlers()) {
-        if (handler.match.exec(file)) {
-          return this._deps.filesProviders[handler.type]
-        }
-      }
+    if (file.indexOf('localhost') === 0) {
+      return this._deps.filesProviders['localhost']
     }
-    return null
+    return this._deps.filesProviders['browser']
   }
 
   saveCurrentFile () {
diff --git a/src/app/files/filePovider.js b/src/app/files/filePovider.js
deleted file mode 100644
index a0c245bd56..0000000000
--- a/src/app/files/filePovider.js
+++ /dev/null
@@ -1,139 +0,0 @@
-'use strict'
-
-var EventManager = require('../../lib/events')
-
-class FileProvider {
-  constructor (name, storage) {
-    this.event = new EventManager()
-    this.storage = storage
-    this.type = name
-    this.structFile = '.' + name + '.tree'
-    this.tree = {}
-  }
-
-  exists (path, cb) {
-    cb(null, this._exists(path))
-  }
-
-  updateRefs (path, type) {
-    var split = path.split('/') // this should be unprefixed path
-    var crawlpath = this.tree
-    var intermediatePath = ''
-    split.forEach((pathPart, index) => {
-      intermediatePath += pathPart
-      if (!crawlpath[pathPart]) crawlpath[intermediatePath] = {}
-      if (index < split.length - 1) {
-        crawlpath = crawlpath[intermediatePath]
-        intermediatePath += '/'
-      } else if (type === 'add') {
-        crawlpath[intermediatePath] = path
-      } else if (type === 'remove' && crawlpath[intermediatePath]) {
-        delete crawlpath[intermediatePath]
-      }
-    })
-    this.storage.set(this.structFile, JSON.stringify(this.tree))
-  }
-
-  _exists (path) {
-    var unprefixedpath = this.removePrefix(path)
-    return this.storage.exists(unprefixedpath)
-  }
-
-  init (cb) {
-    var tree = this.storage.get(this.structFile)
-    this.tree = tree ? JSON.parse(tree) : {}
-    if (cb) cb()
-  }
-
-  get (path, cb) {
-    var unprefixedpath = this.removePrefix(path)
-    var content = this.storage.get(unprefixedpath)
-    if (cb) {
-      cb(null, content)
-    }
-    return content
-  }
-
-  set (path, content, cb) {
-    var unprefixedpath = this.removePrefix(path)
-    this.updateRefs(unprefixedpath, 'add')
-    var exists = this.storage.exists(unprefixedpath)
-    if (!this.storage.set(unprefixedpath, content)) {
-      if (cb) cb('error updating ' + path)
-      return false
-    }
-    if (!exists) {
-      this.event.trigger('fileAdded', [this.type + '/' + unprefixedpath, false])
-    } else {
-      this.event.trigger('fileChanged', [this.type + '/' + unprefixedpath])
-    }
-    if (cb) cb()
-    return true
-  }
-
-  addReadOnly (path, content) {
-    return this.set(path, content)
-  }
-
-  isReadOnly (path) {
-    return false
-  }
-
-  remove (path) {
-    var unprefixedpath = this.removePrefix(path)
-    this.updateRefs(unprefixedpath, 'remove')
-    if (!this._exists(unprefixedpath)) {
-      return false
-    }
-    if (!this.storage.remove(unprefixedpath)) {
-      return false
-    }
-    this.event.trigger('fileRemoved', [this.type + '/' + unprefixedpath])
-    return true
-  }
-
-  rename (oldPath, newPath, isFolder) {
-    var unprefixedoldPath = this.removePrefix(oldPath)
-    var unprefixednewPath = this.removePrefix(newPath)
-    this.updateRefs(unprefixedoldPath, 'remove')
-    this.updateRefs(unprefixednewPath, 'add')
-    if (this.storage.exists(unprefixedoldPath)) {
-      if (!this.storage.rename(unprefixedoldPath, unprefixednewPath)) {
-        return false
-      }
-      this.event.trigger('fileRenamed', [
-        this.type + '/' + unprefixedoldPath,
-        this.type + '/' + unprefixednewPath,
-        isFolder
-      ])
-      return true
-    }
-    return false
-  }
-
-  resolveDirectory (path, callback) {
-    if (path[0] === '/') path = path.substring(1)
-    if (!path) return callback(null, { [this.type]: {} })
-    var tree = {}
-    path = this.removePrefix(path)
-
-    var split = path.split('/') // this should be unprefixed path
-    var crawlpath = this.tree
-    split.forEach((pathPart, index) => {
-      if (crawlpath[pathPart]) crawlpath = crawlpath[pathPart]
-    })
-
-    for (var item in crawlpath) {
-      tree[item] = { isDirectory: typeof crawlpath[item] !== 'string' }
-    }
-    callback(null, tree)
-  }
-
-  removePrefix (path) {
-    path = path.indexOf(this.type) === 0 ? path.replace(this.type, '') : path
-    if (path[0] === '/') return path.substring(1)
-    return path
-  }
-}
-
-module.exports = FileProvider
diff --git a/src/app/files/fileProvider.js b/src/app/files/fileProvider.js
new file mode 100644
index 0000000000..f3096d72e9
--- /dev/null
+++ b/src/app/files/fileProvider.js
@@ -0,0 +1,138 @@
+'use strict'
+
+var EventManager = require('../../lib/events')
+
+class FileProvider {
+  constructor (name) {
+    this.event = new EventManager()
+    this.type = name
+  }
+
+  exists (path, cb) {
+    cb(null, this._exists(path))
+  }
+
+  _exists (path) {
+    var unprefixedpath = this.removePrefix(path)
+    return window.remixFileSystem.existsSync(unprefixedpath)
+  }
+
+  init (cb) {
+    cb()
+  }
+
+  get (path, cb) {
+    cb = cb || function () {}
+    var unprefixedpath = this.removePrefix(path)
+    var exists = window.remixFileSystem.existsSync(unprefixedpath)
+    if (!exists) return cb(null, null)
+    window.remixFileSystem.readFile(unprefixedpath, 'utf8', (err, content) => {
+      cb(err, content)
+    })
+  }
+
+  set (path, content, cb) {
+    cb = cb || function () {}
+    var unprefixedpath = this.removePrefix(path)
+    var exists = window.remixFileSystem.existsSync(unprefixedpath)
+    if (!exists && unprefixedpath.indexOf('/') !== -1) {
+      const paths = unprefixedpath.split('/')
+      paths.pop() // last element should the filename
+      if (paths.length && paths[0] === '') paths.shift()
+      let currentCheck = ''
+      paths.forEach((value) => {
+        currentCheck = currentCheck + '/' + value
+        if (!window.remixFileSystem.existsSync(currentCheck)) {
+          window.remixFileSystem.mkdirSync(currentCheck)
+          this.event.trigger('folderAdded', [this._normalizePath(currentCheck)])
+        }
+      })
+    }
+    try {
+      window.remixFileSystem.writeFileSync(unprefixedpath, content)
+    } catch (e) {
+      cb(e)
+      return false
+    }
+    if (!exists) {
+      this.event.trigger('fileAdded', [this._normalizePath(unprefixedpath), false])
+    } else {
+      this.event.trigger('fileChanged', [this._normalizePath(unprefixedpath)])
+    }
+    cb()
+    return true
+  }
+
+  addReadOnly (path, content) {
+    return this.set(path, content)
+  }
+
+  isReadOnly (path) {
+    return false
+  }
+
+  remove (path) {
+    var unprefixedpath = this.removePrefix(path)
+    if (!this._exists(unprefixedpath)) {
+      return false
+    }
+    const stat = window.remixFileSystem.statSync(unprefixedpath)
+    try {
+      if (stat.isDirectory()) {
+        window.remixFileSystem.rmdirSync(unprefixedpath, console.log)
+      } else {
+        window.remixFileSystem.unlinkSync(unprefixedpath, console.log)
+      }
+      this.event.trigger('fileRemoved', [this._normalizePath(unprefixedpath)])
+      return true
+    } catch (e) {
+      console.log(e)
+      return false
+    }
+  }
+
+  rename (oldPath, newPath, isFolder) {
+    var unprefixedoldPath = this.removePrefix(oldPath)
+    var unprefixednewPath = this.removePrefix(newPath)
+    if (this._exists(unprefixedoldPath)) {
+      window.remixFileSystem.renameSync(unprefixedoldPath, unprefixednewPath)
+      this.event.trigger('fileRenamed', [
+        this._normalizePath(unprefixedoldPath),
+        this._normalizePath(unprefixednewPath),
+        isFolder
+      ])
+      return true
+    }
+    return false
+  }
+
+  resolveDirectory (path, callback) {
+    if (!path) return callback(null, { [this.type]: {} })
+    path = this.removePrefix(path)
+    if (path.indexOf('/') !== 0) path = '/' + path
+
+    window.remixFileSystem.readdir(path, (error, files) => {
+      var ret = {}
+      if (files) {
+        files.forEach(element => {
+          const absPath = (path === '/' ? '' : path) + '/' + element
+          ret[absPath.indexOf('/') === 0 ? absPath.replace('/', '') : absPath] = { isDirectory: window.remixFileSystem.statSync(absPath).isDirectory() }
+          // ^ ret does not accept path starting with '/'
+        })
+      }
+      callback(error, ret)
+    })
+  }
+
+  removePrefix (path) {
+    path = path.indexOf(this.type) === 0 ? path.replace(this.type, '') : path
+    return path
+  }
+
+  _normalizePath (path) {
+    if (path.indexOf('/') !== 0) path = '/' + path
+    return this.type + path
+  }
+}
+
+module.exports = FileProvider
diff --git a/src/app/files/fileProviderBase.js b/src/app/files/fileProviderBase.js
deleted file mode 100644
index 55fcd8936b..0000000000
--- a/src/app/files/fileProviderBase.js
+++ /dev/null
@@ -1,29 +0,0 @@
-'use strict'
-
-class FileProvider {
-
-  exists (path, cb) { throw new Error(this.name + ' function is not implemented for ' + this.constructor.name + ' class') }
-
-  init (cb) { throw new Error(this.name + ' function is not implemented for ' + this.constructor.name + ' class') }
-
-  get (path, cb) { throw new Error(this.name + ' function is not implemented for ' + this.constructor.name + ' class') }
-
-  set (path, content, cb) { throw new Error(this.name + ' function is not implemented for ' + this.constructor.name + ' class') }
-
-  addReadOnly (path, content) { throw new Error(this.name + ' function is not implemented for ' + this.constructor.name + ' class') }
-
-  isReadOnly (path) { throw new Error(this.name + ' function is not implemented for ' + this.constructor.name + ' class') }
-
-  remove (path) { throw new Error(this.name + ' function is not implemented for ' + this.constructor.name + ' class') }
-
-  rename (oldPath, newPath, isFolder) { throw new Error(this.name + ' function is not implemented for ' + this.constructor.name + ' class') }
-
-  resolveDirectory (path, callback) { throw new Error(this.name + ' function is not implemented for ' + this.constructor.name + ' class') }
-
-  removePrefix (path) { throw new Error(this.name + ' function is not implemented for ' + this.constructor.name + ' class') }
-
-  updateRefs (path, type) { throw new Error(this.name + ' function is not implemented for ' + this.constructor.name + ' class') }
-
-}
-
-module.exports = FileProvider
diff --git a/src/app/files/localStorageProvider.js b/src/app/files/localStorageProvider.js
deleted file mode 100644
index 2422f8dc5c..0000000000
--- a/src/app/files/localStorageProvider.js
+++ /dev/null
@@ -1,148 +0,0 @@
-'use strict'
-
-var EventManager = require('../../lib/events')
-
-function LocalStorageProvider (storage) {
-  var event = new EventManager()
-  this.event = event
-  var readonly = {}
-  this.type = 'browser'
-
-  this.exists = function (path, cb) {
-    cb(null, this._exists(path))
-  }
-
-  this._exists = function (path) {
-    var unprefixedpath = this.removePrefix(path)
-    // NOTE: ignore the config file
-    if (path === '.remix.config') return false
-
-    return this.isReadOnly(unprefixedpath) || storage.exists(unprefixedpath)
-  }
-
-  this.init = function (cb) {
-    cb()
-  }
-
-  this.get = function (path, cb) {
-    var unprefixedpath = this.removePrefix(path)
-    // NOTE: ignore the config file
-    if (path === '.remix.config') {
-      return null
-    }
-
-    var content = readonly[unprefixedpath] || storage.get(unprefixedpath)
-    if (cb) {
-      cb(null, content)
-    }
-    return content
-  }
-
-  this.set = function (path, content, cb) {
-    var unprefixedpath = this.removePrefix(path)
-    // NOTE: ignore the config file
-    if (path === '.remix.config') {
-      if (cb) cb('change not allowed')
-      return false
-    }
-
-    if (!this.isReadOnly(unprefixedpath)) {
-      var exists = storage.exists(unprefixedpath)
-      if (!storage.set(unprefixedpath, content)) {
-        if (cb) cb('error updating ' + path)
-        return false
-      }
-      if (!exists) {
-        event.trigger('fileAdded', [this.type + '/' + unprefixedpath, false])
-      } else {
-        event.trigger('fileChanged', [this.type + '/' + unprefixedpath])
-      }
-      if (cb) cb()
-      return true
-    }
-    if (cb) cb('is read only')
-    return false
-  }
-
-  this.addReadOnly = function (path, content) {
-    var unprefixedpath = this.removePrefix(path)
-    if (!storage.exists(unprefixedpath)) {
-      readonly[unprefixedpath] = content
-      event.trigger('fileAdded', [this.type + '/' + unprefixedpath, true])
-      return true
-    }
-
-    return false
-  }
-
-  this.isReadOnly = function (path) {
-    path = this.removePrefix(path)
-    return readonly[path] !== undefined
-  }
-
-  this.remove = function (path) {
-    var unprefixedpath = this.removePrefix(path)
-    if (!this._exists(unprefixedpath)) {
-      return false
-    }
-
-    if (this.isReadOnly(unprefixedpath)) {
-      readonly[unprefixedpath] = undefined
-    } else {
-      if (!storage.remove(unprefixedpath)) {
-        return false
-      }
-    }
-    event.trigger('fileRemoved', [this.type + '/' + unprefixedpath])
-    return true
-  }
-
-  this.rename = function (oldPath, newPath, isFolder) {
-    var unprefixedoldPath = this.removePrefix(oldPath)
-    var unprefixednewPath = this.removePrefix(newPath)
-    if (!this.isReadOnly(unprefixedoldPath) && storage.exists(unprefixedoldPath)) {
-      if (!storage.rename(unprefixedoldPath, unprefixednewPath)) {
-        return false
-      }
-      event.trigger('fileRenamed', [this.type + '/' + unprefixedoldPath, this.type + '/' + unprefixednewPath, isFolder])
-      return true
-    }
-    return false
-  }
-
-  this.resolveDirectory = function (path, callback) {
-    var self = this
-    if (path[0] === '/') path = path.substring(1)
-    if (!path) return callback(null, { [self.type]: { } })
-    path = self.removePrefix(path)
-    var filesList = {}
-    var tree = {}
-    // add r/w filesList to the list
-    storage.keys().forEach((path) => {
-      // NOTE: as a temporary measure do not show the config file
-      if (path !== '.remix.config') {
-        filesList[path] = false
-      }
-    })
-    // add r/o files to the list
-    Object.keys(readonly).forEach((path) => {
-      filesList[path] = true
-    })
-
-    Object.keys(filesList).forEach(function (path) {
-      tree[path] = { isDirectory: false }
-    })
-    return callback(null, tree)
-  }
-
-  this.removePrefix = function (path) {
-    return path.indexOf(this.type + '/') === 0 ? path.replace(this.type + '/', '') : path
-  }
-
-  // rename .browser-solidity.json to .remix.config
-  if (this._exists('.browser-solidity.json')) {
-    this.rename('.browser-solidity.json', '.remix.config')
-  }
-}
-
-module.exports = LocalStorageProvider
diff --git a/src/app/files/readonlyProvider.js b/src/app/files/readonlyProvider.js
deleted file mode 100644
index 16abfd2a10..0000000000
--- a/src/app/files/readonlyProvider.js
+++ /dev/null
@@ -1,18 +0,0 @@
-'use strict'
-let BasicFileProvider = require('./basicFileProvider')
-
-class ReadonlyProvider extends BasicFileProvider {
-
-  remove (path) {
-    return false
-  }
-
-  rename (oldPath, newPath, isFolder) {
-    return false
-  }
-
-  isReadOnly (path) {
-    return true
-  }
-}
-module.exports = ReadonlyProvider
diff --git a/src/app/panels/file-panel.js b/src/app/panels/file-panel.js
index 4be2a51942..5aacc97a87 100644
--- a/src/app/panels/file-panel.js
+++ b/src/app/panels/file-panel.js
@@ -52,21 +52,13 @@ module.exports = class Filepanel extends ViewPlugin {
       fileManager: self._components.registry.get('filemanager').api,
       config: self._components.registry.get('config').api
     }
-    var fileExplorer = new FileExplorer(self._components.registry, self._deps.fileProviders['browser'],
-      ['createNewFile', 'publishToGist', 'copyFiles', canUpload ? 'uploadFile' : '']
-    )
 
     function createProvider (key, menuItems) {
       return new FileExplorer(self._components.registry, self._deps.fileProviders[key], menuItems)
     }
 
+    var fileExplorer = createProvider('browser', ['createNewFile', 'publishToGist', 'copyFiles', canUpload ? 'uploadFile' : ''])
     var fileSystemExplorer = createProvider('localhost')
-    var swarmExplorer = createProvider('swarm')
-    var githubExplorer = createProvider('github')
-    var gistExplorer = createProvider('gist', ['updateGist'])
-    var httpExplorer = createProvider('http')
-    var httpsExplorer = createProvider('https')
-    var ipfsExplorer = createProvider('ipfs')
 
     self.remixdHandle = new RemixdHandle(fileSystemExplorer, self._deps.fileProviders['localhost'], appManager)
 
@@ -74,12 +66,6 @@ module.exports = class Filepanel extends ViewPlugin {
       <div>
         <div class=${css.treeview}>${fileExplorer.init()}</div>
         <div class="filesystemexplorer ${css.treeview}">${fileSystemExplorer.init()}</div>
-        <div class="swarmexplorer ${css.treeview}">${swarmExplorer.init()}</div>
-        <div class="githubexplorer ${css.treeview}">${githubExplorer.init()}</div>
-        <div class="gistexplorer ${css.treeview}">${gistExplorer.init()}</div>
-        <div class="httpexplorer ${css.treeview}">${httpExplorer.init()}</div>
-        <div class="httpsexplorer ${css.treeview}">${httpsExplorer.init()}</div>
-        <div class="ipfsexplorer ${css.treeview}">${ipfsExplorer.init()}</div>
       </div>
     `
 
diff --git a/src/app/tabs/compile-tab.js b/src/app/tabs/compile-tab.js
index 8ff1595925..b24f428fb8 100644
--- a/src/app/tabs/compile-tab.js
+++ b/src/app/tabs/compile-tab.js
@@ -42,7 +42,7 @@ const profile = {
 
 class CompileTab extends ViewPlugin {
 
-  constructor (editor, config, renderer, swarmfileProvider, ipfsfileProvider, fileManager, fileProviders) {
+  constructor (editor, config, renderer, fileProvider, fileManager) {
     super(profile)
     this.events = new EventEmitter()
     this._view = {
@@ -52,15 +52,12 @@ class CompileTab extends ViewPlugin {
       contractEl: null
     }
     this.queryParams = new QueryParams()
-
+    this.fileProvider = fileProvider
     // dependencies
     this.editor = editor
     this.config = config
     this.renderer = renderer
-    this.swarmfileProvider = swarmfileProvider
-    this.ipfsfileProvider = ipfsfileProvider
     this.fileManager = fileManager
-    this.fileProviders = fileProviders
 
     this.data = {
       contractsDetails: {}
@@ -68,7 +65,7 @@ class CompileTab extends ViewPlugin {
   }
 
   onActivationInternal () {
-    this.compileTabLogic = new CompileTabLogic(this.queryParams, this.fileManager, this.editor, this.config, this.fileProviders)
+    this.compileTabLogic = new CompileTabLogic(this.queryParams, this.fileManager, this.editor, this.config, this.fileProvider)
     this.compiler = this.compileTabLogic.compiler
     this.compileTabLogic.init()
 
@@ -311,7 +308,7 @@ class CompileTab extends ViewPlugin {
               modalDialogCustom.alert(yo`<span>Metadata published successfully.<br> <pre>${result}</pre> </span>`)
             }
           }, (item) => { // triggered each time there's a new verified publish (means hash correspond)
-            this.swarmfileProvider.addReadOnly('swarm/' + item.hash, item.content)
+            this.fileProvider.addReadOnly('swarm/' + item.hash, item.content)
           })
         } else {
           publishOnIpfs(contract, this.fileManager, function (err, uploaded) {
@@ -328,7 +325,7 @@ class CompileTab extends ViewPlugin {
               modalDialogCustom.alert(yo`<span>Metadata published successfully.<br> <pre>${result}</pre> </span>`)
             }
           }, (item) => { // triggered each time there's a new verified publish (means hash correspond)
-            this.ipfsfileProvider.addReadOnly('ipfs/' + item.hash, item.content)
+            this.fileProvider.addReadOnly('ipfs/' + item.hash, item.content)
           })
         }
       }
diff --git a/src/app/tabs/compileTab/compileTab.js b/src/app/tabs/compileTab/compileTab.js
index 1edbea26f3..f2751d1d8c 100644
--- a/src/app/tabs/compileTab/compileTab.js
+++ b/src/app/tabs/compileTab/compileTab.js
@@ -9,7 +9,7 @@ const addTooltip = require('../../ui/tooltip')
 
 class CompileTab {
 
-  constructor (queryParams, fileManager, editor, config, fileProviders) {
+  constructor (queryParams, fileManager, editor, config, fileProvider) {
     this.event = new EventEmitter()
     this.queryParams = queryParams
     this.compilerImport = new CompilerImport()
@@ -17,7 +17,7 @@ class CompileTab {
     this.fileManager = fileManager
     this.editor = editor
     this.config = config
-    this.fileProviders = fileProviders
+    this.fileProvider = fileProvider
   }
 
   init () {
@@ -92,8 +92,8 @@ class CompileTab {
       (error, content, cleanUrl, type, url) => {
         if (error) return cb(error)
 
-        if (this.fileProviders[type]) {
-          this.fileProviders[type].addReadOnly(cleanUrl, content, url)
+        if (this.fileProvider) {
+          this.fileProvider.addReadOnly(cleanUrl, content, url)
         }
         cb(null, content)
       })
diff --git a/src/lib/gist-handler.js b/src/lib/gist-handler.js
index 9433cc1c2d..30b3e8bc08 100644
--- a/src/lib/gist-handler.js
+++ b/src/lib/gist-handler.js
@@ -42,7 +42,7 @@ function GistHandler (_window) {
   }
 
   this.loadFromGist = (params, fileManager) => {
-    const gistProvider = fileManager.fileProviderOf('gist')
+    const gistProvider = fileManager.fileProviderOf('browser')
     const self = this
     return self.handleLoad(params, function (gistId) {
       request.get({
@@ -53,7 +53,11 @@ function GistHandler (_window) {
           modalDialogCustom.alert(`Gist load error: ${error || data.message}`)
           return
         }
-        fileManager.setBatchFiles(data.files, 'gist', (errorLoadingFile) => {
+        let obj = {}
+        Object.keys(data.files).forEach((element) => {
+          obj['/gists/' + gistId + '/' + element] = data.files[element]
+        })
+        fileManager.setBatchFiles(obj, 'browser', (errorLoadingFile) => {
           if (!errorLoadingFile) {
             gistProvider.id = gistId
             gistProvider.origGistFiles = data.files
diff --git a/src/lib/helper.js b/src/lib/helper.js
index 758fbef843..b72c3aa3a0 100644
--- a/src/lib/helper.js
+++ b/src/lib/helper.js
@@ -41,7 +41,7 @@ module.exports = {
     this.createNonClashingNameWithPrefix(name, fileProvider, '', cb)
   },
   checkSpecialChars (name) {
-    return name.match(/[/:*?"<>\\'|]/) != null
+    return name.match(/[:*?"<>\\'|]/) != null
   },
   find: find
 }
diff --git a/test-browser/commands/switchFile.js b/test-browser/commands/switchFile.js
index de88d4a2fd..44ccfe6aaa 100644
--- a/test-browser/commands/switchFile.js
+++ b/test-browser/commands/switchFile.js
@@ -1,9 +1,9 @@
 const EventEmitter = require('events')
 
 class SwitchFile extends EventEmitter {
-  command (contractName) {
+  command (name) {
     this.api.perform((done) => {
-      switchFile(this.api, contractName, () => {
+      switchFile(this.api, name, () => {
         done()
         this.emit('complete')
       })
diff --git a/test-browser/tests/libraryDeployment.js b/test-browser/tests/libraryDeployment.js
index 415b9c36fa..239a1258d6 100644
--- a/test-browser/tests/libraryDeployment.js
+++ b/test-browser/tests/libraryDeployment.js
@@ -56,7 +56,7 @@ module.exports = {
 
 function checkDeployShouldFail (browser, callback) {
   let config
-  browser.switchFile('browser/test.json')
+  browser.switchFile('browser/artifacts').switchFile('browser/artifacts/test.json')
         .getEditorValue((content) => {
           config = JSON.parse(content)
           config.deploy['VM:-'].autoDeployLib = false
@@ -74,7 +74,7 @@ function checkDeployShouldFail (browser, callback) {
 function checkDeployShouldSucceed (browser, address, callback) {
   let addressRef
   let config
-  browser.switchFile('browser/test.json')
+  browser.switchFile('browser/artifacts').switchFile('browser/artifacts/test.json')
         .getEditorValue((content) => {
           config = JSON.parse(content)
           config.deploy['VM:-'].autoDeployLib = false