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258 lines
7.3 KiB
Markdown
258 lines
7.3 KiB
Markdown
# auth-token.js
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> GitHub API token authentication for browsers and Node.js
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[](https://www.npmjs.com/package/@octokit/auth-token)
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[](https://travis-ci.com/octokit/auth-token.js)
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[](https://greenkeeper.io/)
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`@octokit/auth-token` is the simplest of [GitHub’s authentication strategies](https://github.com/octokit/auth.js).
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It is useful if you want to support multiple authentication strategies, as it’s API is compatible with its sibling packages for [basic](https://github.com/octokit/auth-basic.js), [GitHub App](https://github.com/octokit/auth-app.js) and [OAuth app](https://github.com/octokit/auth.js) authentication.
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<!-- toc -->
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## Usage
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<table>
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<tbody valign=top align=left>
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<tr><th>
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Browsers
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</th><td width=100%>
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Load `@octokit/auth-token` directly from [cdn.pika.dev](https://cdn.pika.dev)
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```html
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<script type="module">
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import { createTokenAuth } from "https://cdn.pika.dev/@octokit/auth-token";
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</script>
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```
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</td></tr>
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<tr><th>
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Node
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</th><td>
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Install with <code>npm install @octokit/auth-token</code>
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```js
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const { createTokenAuth } = require("@octokit/auth-token");
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// or: import { createTokenAuth } from "@octokit/auth-token";
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```
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</td></tr>
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</tbody>
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</table>
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```js
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const auth = createTokenAuth("1234567890abcdef1234567890abcdef12345678");
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const authentication = await auth();
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// {
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// type: 'token',
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// token: '1234567890abcdef1234567890abcdef12345678',
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// tokenType: 'oauth'
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```
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## `createTokenAuth(token) options`
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The `createTokenAuth` method accepts a single argument of type string, which is the token. The passed token can be one of the following:
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- [Personal access token](https://help.github.com/en/articles/creating-a-personal-access-token-for-the-command-line)
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- [OAuth access token](https://developer.github.com/apps/building-oauth-apps/authorizing-oauth-apps/)
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- Installation access token ([GitHub App Installation](https://developer.github.com/apps/building-github-apps/authenticating-with-github-apps/#authenticating-as-an-installation))
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- [GITHUB_TOKEN provided to GitHub Actions](https://developer.github.com/actions/creating-github-actions/accessing-the-runtime-environment/#environment-variables)
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Examples
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```js
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// Personal access token or OAuth access token
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createTokenAuth("1234567890abcdef1234567890abcdef12345678");
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// Installation access token or GitHub Action token
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createTokenAuth("v1.d3d433526f780fbcc3129004e2731b3904ad0b86");
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```
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## `auth()`
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The `auth()` method has no options. It returns a promise which resolves with the the authentication object.
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## Authentication object
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<table width="100%">
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<thead align=left>
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<tr>
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<th width=150>
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name
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</th>
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<th width=70>
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type
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</th>
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<th>
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description
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</th>
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</tr>
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</thead>
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<tbody align=left valign=top>
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<tr>
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<th>
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<code>type</code>
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</th>
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<th>
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<code>string</code>
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</th>
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<td>
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<code>"token"</code>
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</td>
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</tr>
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<tr>
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<th>
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<code>token</code>
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</th>
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<th>
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<code>string</code>
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</th>
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<td>
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The provided token.
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</td>
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</tr>
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<tr>
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<th>
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<code>tokenType</code>
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</th>
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<th>
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<code>string</code>
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</th>
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<td>
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Can be either <code>"oauth"</code> for personal access tokens and OAuth tokens, or <code>"installation"</code> for installation access tokens (includes <code>GITHUB_TOKEN</code> provided to GitHub Actions)
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</td>
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</tr>
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</tbody>
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</table>
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## `auth.hook(request, route, options)` or `auth.hook(request, options)`
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`auth.hook()` hooks directly into the request life cycle. It authenticates the request using the provided token.
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The `request` option is an instance of [`@octokit/request`](https://github.com/octokit/request.js#readme). The `route`/`options` parameters are the same as for the [`request()` method](https://github.com/octokit/request.js#request).
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`auth.hook()` can be called directly to send an authenticated request
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```js
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const { data: authorizations } = await auth.hook(
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request,
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"GET /authorizations"
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);
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```
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Or it can be passed as option to [`request()`](https://github.com/octokit/request.js#request).
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```js
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const requestWithAuth = request.defaults({
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request: {
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hook: auth.hook
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}
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});
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const { data: authorizations } = await requestWithAuth("GET /authorizations");
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```
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## Find more information
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`auth()` does not send any requests, it only transforms the provided token string into an authentication object.
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Here is a list of things you can do to retrieve further information
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### Find out what scopes are enabled for oauth tokens
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Note that this does not work for installations. There is no way to retrieve permissions based on an installation access tokens.
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```js
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const TOKEN = "1234567890abcdef1234567890abcdef12345678";
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const auth = createTokenAuth(TOKEN);
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const authentication = await auth();
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const response = await request("HEAD /", {
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headers: authentication.headers
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});
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const scopes = response.headers["x-oauth-scopes"].split(/,\s+/);
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if (scopes.length) {
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console.log(
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`"${TOKEN}" has ${scopes.length} scopes enabled: ${scopes.join(", ")}`
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);
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} else {
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console.log(`"${TOKEN}" has no scopes enabled`);
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}
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```
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### Find out if token is a personal access token or if it belongs to an OAuth app
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```js
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const TOKEN = "1234567890abcdef1234567890abcdef12345678";
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const auth = createTokenAuth(TOKEN);
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const authentication = await auth();
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const response = await request("HEAD /", {
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headers: authentication.headers
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});
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const clientId = response.headers["x-oauth-client-id"];
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if (clientId) {
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console.log(
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`"${token}" is an OAuth token, its app’s client_id is ${clientId}.`
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);
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} else {
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console.log(`"${token}" is a personal access token`);
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}
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```
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### Find out what permissions are enabled for a repository
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Note that the `permissions` key is not set when authenticated using an installation access token.
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```js
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const TOKEN = "1234567890abcdef1234567890abcdef12345678";
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const auth = createTokenAuth(TOKEN);
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const authentication = await auth();
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const response = await request("GET /repos/:owner/:repo", {
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owner: 'octocat',
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repo: 'hello-world'
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headers: authentication.headers
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});
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console.log(response.data.permissions)
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// {
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// admin: true,
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// push: true,
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// pull: true
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// }
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```
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### Use token for git operations
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Both OAuth and installation access tokens can be used for git operations. However, when using with an installation, [the token must be prefixed with `x-access-token`](https://developer.github.com/apps/building-github-apps/authenticating-with-github-apps/#http-based-git-access-by-an-installation).
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This example is using the [`execa`](https://github.com/sindresorhus/execa) package to run a `git push` command.
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```js
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const TOKEN = "1234567890abcdef1234567890abcdef12345678";
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const auth = createTokenAuth(TOKEN);
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const { token, tokenType } = await auth();
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const tokenWithPrefix =
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tokenType === "installation" ? `x-access-token:${token}` : token;
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const repositoryUrl = `https://${tokenWithPrefix}@github.com/octocat/hello-world.git`;
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const { stdout } = await execa("git", ["push", repositoryUrl]);
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console.log(stdout);
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```
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## License
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[MIT](LICENSE)
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