stop the file watcher

libs/remixd/src/services/hardhatClient.ts

@@ -9,6 +9,7 @@ export class HardhatClient extends PluginClient {
   methods: Array<string>
   websocket: WS
   currentSharedFolder: string
+  watcher: chokidar.FSWatcher
 
   constructor (private readOnly = false) {
     super()
@@ -17,6 +18,9 @@ export class HardhatClient extends PluginClient {
 
   setWebSocket (websocket: WS): void {
     this.websocket = websocket
+    this.websocket.addEventListener('close', () => {
+      if (this.watcher) this.watcher.close()
+    })
   }
 
   sharedFolder (currentSharedFolder: string): void {
@@ -54,8 +58,8 @@ export class HardhatClient extends PluginClient {
   listenOnHardhatCompilation () {
     try {
       const buildPath = utils.absolutePath('artifacts/build-info', this.currentSharedFolder)
-      const watcher = chokidar.watch(buildPath, { depth: 0, ignorePermissionErrors: true })
-      watcher.on('change', async (f: string) => {
+      this.watcher = chokidar.watch(buildPath, { depth: 0, ignorePermissionErrors: true })
+      this.watcher.on('change', async (f: string) => {
         const content = await fs.readFile(f, { encoding: 'utf-8' })
         const compilationResult = JSON.parse(content)
         // @ts-ignore

libs/remixd/src/services/remixdClient.ts

@@ -11,6 +11,7 @@ export class RemixdClient extends PluginClient {
   trackDownStreamUpdate: TrackDownStreamUpdate = {}
   websocket: WS
   currentSharedFolder: string
+  watcher: chokidar.FSWatcher
 
   constructor (private readOnly = false) {
     super()
@@ -19,6 +20,9 @@ export class RemixdClient extends PluginClient {
 
   setWebSocket (websocket: WS): void {
     this.websocket = websocket
+    this.websocket.addEventListener('close', () => {
+      if (this.watcher) this.watcher.close()
+    })
   }
 
   sharedFolder (currentSharedFolder: string): void {
@@ -246,7 +250,7 @@ export class RemixdClient extends PluginClient {
     const absPath = utils.absolutePath('./', path)
 
     if (!isRealPath(absPath)) return
-    const watcher = chokidar.watch(path, { depth: 0, ignorePermissionErrors: true })
+    this.watcher = chokidar.watch(path, { depth: 0, ignorePermissionErrors: true })
     console.log('setup notifications for ' + path)
     /* we can't listen on created file / folder
     watcher.on('add', (f, stat) => {
@@ -260,7 +264,7 @@ export class RemixdClient extends PluginClient {
       this.emit('created', { path: utils.relativePath(f, this.currentSharedFolder), isReadOnly: false, isFolder: true })
     })
     */
-    watcher.on('change', async (f: string) => {
+    this.watcher.on('change', async (f: string) => {
       if (this.trackDownStreamUpdate[f]) {
         delete this.trackDownStreamUpdate[f]
         return
@@ -269,12 +273,12 @@ export class RemixdClient extends PluginClient {
         this.emit('changed', utils.relativePath(f, this.currentSharedFolder))
       }
     })
-    watcher.on('unlink', async (f: string) => {
+    this.watcher.on('unlink', async (f: string) => {
       if (this.isLoaded) {
         this.emit('removed', utils.relativePath(f, this.currentSharedFolder), false)    
       }
     })
-    watcher.on('unlinkDir', async (f: string) => {
+    this.watcher.on('unlinkDir', async (f: string) => {
       if (this.isLoaded) {
         this.emit('removed', utils.relativePath(f, this.currentSharedFolder), true)    
       }