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remix-project/libs/remix-url-resolver/README.md

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## Remix Url Resolver
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`@remix-project/remix-url-resolver` is a tool to handle import from different sources and resolve the content. It is used in Remix IDE to handle imports from `GitHub`, `Swarm`, `IPFS` and other URLs.
### Installation
`@remix-project/remix-url-resolver` is an NPM package and can be installed using NPM as:
`yarn add @remix-project/remix-url-resolver`
### How to use
`@remix-project/remix-url-resolver` exports:
```
export declare class RemixURLResolver {
private previouslyHandled;
gistAccessToken: string;
constructor(gistToken?: string);
/**
* Handle an import statement based on github
* @param root The root of the github import statement
* @param filePath path of the file in github
*/
handleGithubCall(root: string, filePath: string): Promise<HandlerResponse>;
/**
* Handle an import statement based on http
* @param url The url of the import statement
* @param cleanUrl
*/
handleHttp(url: string, cleanUrl: string): Promise<HandlerResponse>;
/**
* Handle an import statement based on https
* @param url The url of the import statement
* @param cleanUrl
*/
handleHttps(url: string, cleanUrl: string): Promise<HandlerResponse>;
handleSwarm(url: string, cleanUrl: string): Promise<HandlerResponse>;
/**
* Handle an import statement based on IPFS
* @param url The url of the IPFS import statement
*/
handleIPFS(url: string): Promise<HandlerResponse>;
getHandlers(): Handler[];
resolve(filePath: string, customHandlers?: Handler[]): Promise<Imported>;
}
```
**Usage**
`resolve(url, customHandlers)` function should be called from within `handleImportCb` function of `solc.compile(input, handleImportCb)`.
```ts
import { RemixURLResolver } from 'remix-url-resolver'
const urlResolver = new RemixURLResolver()
const fileName: string = '../greeter.sol'
urlResolver.resolve(fileName, urlHandler)
.then((sources: object) => {
console.log(sources)
})
.catch((e: Error) => {
throw e
})
```
#### References
* [TypeScript Publishing](http://www.typescriptlang.org/docs/handbook/declaration-files/publishing.html)
* [DefinitelyTyped 'Create a new package' guide](https://github.com/DefinitelyTyped/DefinitelyTyped#create-a-new-package)
### Contribute
Please feel free to open an issue or a pull request.
In case you want to add some code, do have a look to our contribution guidelnes [here](https://github.com/ethereum/remix-project/blob/master/CONTRIBUTING.md). Reach us on [Gitter](https://gitter.im/ethereum/remix) in case of any queries.
### License
MIT © 2018-21 Remix Team