VS Code File Downloader API

This package acts as a wrapper around the VS Code File Downloader extension, which exposes an API that allows other extensions to download and manage binary dependencies.

Setup

Place the following in your VS Code extension's package.json file:

"extensionDependencies": [
    "mindaro.file-downloader"
]

Usage

To get the API:

import { Uri } from "vscode";
import { getApi, FileDownloader } from "@microsoft/vscode-file-downloader-api";
...
const fileDownloader: FileDownloader = await getApi();

Download file:

Simplest case:

const file: Uri = await fileDownloader.downloadFile(
    Uri.parse(url),
    filename,
    context
);

With cancellation token and download progress callback:

import { Uri, CancellationTokenSource } from "vscode";
...

const cancellationTokenSource = new CancellationTokenSource();
const cancellationToken = cancellationTokenSource.token;

const progressCallback = (downloadedBytes: number, totalBytes: number | undefined) => {
    console.log(`Downloaded ${downloadedBytes}/${totalBytes} bytes`);
};

const file: Uri = await fileDownloader.downloadFile(
    Uri.parse(url),
    filename,
    context,
    cancellationToken,
    progressCallback
);

Extract .zip file into directory:

If you set shouldUnzip to true and download a .zip file, it will be automatically extracted to a folder titled filename.

const directory: Uri = await fileDownloader.downloadFile(
    Uri.parse(url),
    filename,
    context,
    /* cancellationToken */ undefined,
    /* progressCallback */ undefined,
    { shouldUnzip: true }
);

List previously downloaded files:

const downloadedFiles: Uri[] = await fileDownloader.listDownloadedItems(context);

Get a single downloaded file:

try {
    const downloadedFile: Uri = await fileDownloader.getItem(filename, context);
}
catch (error) {
    // File does not exist in downloads directory
}

or

const downloadedFile: Uri = await fileDownloader.tryGetItem(filename, context);
if (downloadedFile === undefined) {
    // File does not exist in downloads directory
}

Delete downloaded files

Delete one file:

await fileDownloader.deleteItem(filename, context);

Delete all files:

await fileDownloader.deleteAllItems(context);

Contributing

This project welcomes contributions and suggestions. Most contributions require you to agree to a Contributor License Agreement (CLA) declaring that you have the right to, and actually do, grant us the rights to use your contribution. For details, visit https://cla.opensource.microsoft.com.

When you submit a pull request, a CLA bot will automatically determine whether you need to provide a CLA and decorate the PR appropriately (e.g., status check, comment). Simply follow the instructions provided by the bot. You will only need to do this once across all repos using our CLA.

This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact opencode@microsoft.com with any additional questions or comments.

Testing changes

Do not use npm link to test changes locally. It can result in duplicate type declarations that can cause problems with TypeScript. To test changes locally, compile and pack the package:

npm run compile
npm pack

This produces a file called microsoft-vscode-file-downloader-api-X.X.X.tgz where X.X.X is the version number. Install the package in the consumer extension's root folder:

npm install ./path/to/microsoft-vscode-file-downloader-api-X.X.X.tgz