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552 lines
16 KiB
Markdown
552 lines
16 KiB
Markdown
# request.js
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> Send parameterized requests to GitHub’s APIs with sensible defaults in browsers and Node
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[![@latest](https://img.shields.io/npm/v/@octokit/request.svg)](https://www.npmjs.com/package/@octokit/request)
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[![Build Status](https://github.com/octokit/request.js/workflows/Test/badge.svg)](https://github.com/octokit/request.js/actions?query=workflow%3ATest+branch%3Amaster)
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`@octokit/request` is a request library for browsers & node that makes it easier
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to interact with [GitHub’s REST API](https://developer.github.com/v3/) and
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[GitHub’s GraphQL API](https://developer.github.com/v4/guides/forming-calls/#the-graphql-endpoint).
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It uses [`@octokit/endpoint`](https://github.com/octokit/endpoint.js) to parse
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the passed options and sends the request using [fetch](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API)
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([node-fetch](https://github.com/bitinn/node-fetch) in Node).
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<!-- update table of contents by running `npx markdown-toc README.md -i` -->
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<!-- toc -->
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- [Features](#features)
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- [Usage](#usage)
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- [REST API example](#rest-api-example)
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- [GraphQL example](#graphql-example)
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- [Alternative: pass `method` & `url` as part of options](#alternative-pass-method--url-as-part-of-options)
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- [Authentication](#authentication)
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- [request()](#request)
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- [`request.defaults()`](#requestdefaults)
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- [`request.endpoint`](#requestendpoint)
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- [Special cases](#special-cases)
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- [The `data` parameter – set request body directly](#the-data-parameter-%E2%80%93-set-request-body-directly)
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- [Set parameters for both the URL/query and the request body](#set-parameters-for-both-the-urlquery-and-the-request-body)
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- [LICENSE](#license)
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<!-- tocstop -->
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## Features
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🤩 1:1 mapping of REST API endpoint documentation, e.g. [Add labels to an issue](https://developer.github.com/v3/issues/labels/#add-labels-to-an-issue) becomes
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```js
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request("POST /repos/{owner}/{repo}/issues/{number}/labels", {
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mediaType: {
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previews: ["symmetra"],
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},
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owner: "octokit",
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repo: "request.js",
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number: 1,
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labels: ["🐛 bug"],
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});
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```
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👶 [Small bundle size](https://bundlephobia.com/result?p=@octokit/request@5.0.3) (\<4kb minified + gzipped)
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😎 [Authenticate](#authentication) with any of [GitHubs Authentication Strategies](https://github.com/octokit/auth.js).
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👍 Sensible defaults
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- `baseUrl`: `https://api.github.com`
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- `headers.accept`: `application/vnd.github.v3+json`
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- `headers.agent`: `octokit-request.js/<current version> <OS information>`, e.g. `octokit-request.js/1.2.3 Node.js/10.15.0 (macOS Mojave; x64)`
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👌 Simple to test: mock requests by passing a custom fetch method.
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🧐 Simple to debug: Sets `error.request` to request options causing the error (with redacted credentials).
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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 <code>@octokit/request</code> directly from <a href="https://cdn.skypack.dev">cdn.skypack.dev</a>
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```html
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<script type="module">
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import { request } from "https://cdn.skypack.dev/@octokit/request";
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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/request</code>
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```js
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const { request } = require("@octokit/request");
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// or: import { request } from "@octokit/request";
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```
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</td></tr>
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</tbody>
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</table>
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### REST API example
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```js
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// Following GitHub docs formatting:
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// https://developer.github.com/v3/repos/#list-organization-repositories
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const result = await request("GET /orgs/{org}/repos", {
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headers: {
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authorization: "token 0000000000000000000000000000000000000001",
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},
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org: "octokit",
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type: "private",
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});
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console.log(`${result.data.length} repos found.`);
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```
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### GraphQL example
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For GraphQL request we recommend using [`@octokit/graphql`](https://github.com/octokit/graphql.js#readme)
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```js
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const result = await request("POST /graphql", {
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headers: {
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authorization: "token 0000000000000000000000000000000000000001",
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},
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query: `query ($login: String!) {
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organization(login: $login) {
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repositories(privacy: PRIVATE) {
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totalCount
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}
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}
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}`,
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variables: {
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login: "octokit",
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},
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});
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```
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### Alternative: pass `method` & `url` as part of options
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Alternatively, pass in a method and a url
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```js
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const result = await request({
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method: "GET",
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url: "/orgs/{org}/repos",
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headers: {
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authorization: "token 0000000000000000000000000000000000000001",
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},
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org: "octokit",
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type: "private",
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});
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```
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## Authentication
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The simplest way to authenticate a request is to set the `Authorization` header directly, e.g. to a [personal access token](https://github.com/settings/tokens/).
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```js
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const requestWithAuth = request.defaults({
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headers: {
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authorization: "token 0000000000000000000000000000000000000001",
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},
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});
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const result = await requestWithAuth("GET /user");
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```
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For more complex authentication strategies such as GitHub Apps or Basic, we recommend the according authentication library exported by [`@octokit/auth`](https://github.com/octokit/auth.js).
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```js
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const { createAppAuth } = require("@octokit/auth-app");
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const auth = createAppAuth({
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appId: process.env.APP_ID,
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privateKey: process.env.PRIVATE_KEY,
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installationId: 123,
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});
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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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mediaType: {
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previews: ["machine-man"],
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},
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});
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const { data: app } = await requestWithAuth("GET /app");
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const { data: app } = await requestWithAuth(
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"POST /repos/{owner}/{repo}/issues",
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{
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owner: "octocat",
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repo: "hello-world",
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title: "Hello from the engine room",
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}
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);
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```
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## request()
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`request(route, options)` or `request(options)`.
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**Options**
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<table>
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<thead>
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<tr>
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<th align=left>
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name
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</th>
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<th align=left>
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type
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</th>
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<th align=left>
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description
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</th>
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</tr>
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</thead>
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<tr>
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<th align=left>
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<code>route</code>
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</th>
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<td>
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String
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</td>
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<td>
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**Required**. If <code>route</code> is set it has to be a string consisting of the request method and URL, e.g. <code>GET /orgs/{org}</code>
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</td>
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</tr>
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<tr>
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<th align=left>
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<code>options.baseUrl</code>
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</th>
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<td>
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String
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</td>
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<td>
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The base URL that <code>route</code> or <code>url</code> will be prefixed with, if they use relative paths. <em>Defaults to <code>https://api.github.com</code></em>.
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</td>
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</tr>
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<th align=left>
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<code>options.headers</code>
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</th>
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<td>
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Object
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</td>
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<td>
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Custom headers. Passed headers are merged with defaults:<br>
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<em><code>headers['user-agent']</code> defaults to <code>octokit-rest.js/1.2.3</code> (where <code>1.2.3</code> is the released version)</em>.<br>
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<em><code>headers['accept']</code> defaults to <code>application/vnd.github.v3+json</code>.<br> Use <code>options.mediaType.{format,previews}</code> to request API previews and custom media types.
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</td>
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</tr>
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<tr>
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<th align=left>
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<code>options.mediaType.format</code>
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</th>
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<td>
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String
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</td>
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<td>
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Media type param, such as `raw`, `html`, or `full`. See <a href="https://developer.github.com/v3/media/">Media Types</a>.
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</td>
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</tr>
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<tr>
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<th align=left>
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<code>options.mediaType.previews</code>
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</th>
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<td>
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Array of strings
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</td>
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<td>
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Name of previews, such as `mercy`, `symmetra`, or `scarlet-witch`. See <a href="https://developer.github.com/v3/previews/">API Previews</a>.
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</td>
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</tr>
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<tr>
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<th align=left>
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<code>options.method</code>
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</th>
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<td>
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String
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</td>
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<td>
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Any supported <a href="https://developer.github.com/v3/#http-verbs">http verb</a>, case insensitive. <em>Defaults to <code>Get</code></em>.
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</td>
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</tr>
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<tr>
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<th align=left>
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<code>options.url</code>
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</th>
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<td>
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String
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</td>
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<td>
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**Required**. A path or full URL which may contain <code>:variable</code> or <code>{variable}</code> placeholders,
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e.g. <code>/orgs/{org}/repos</code>. The <code>url</code> is parsed using <a href="https://github.com/bramstein/url-template">url-template</a>.
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</td>
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</tr>
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<tr>
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<th align=left>
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<code>options.data</code>
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</th>
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<td>
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Any
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</td>
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<td>
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Set request body directly instead of setting it to JSON based on additional parameters. See <a href="#data-parameter">"The `data` parameter"</a> below.
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</td>
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</tr>
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<tr>
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<th align=left>
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<code>options.request.agent</code>
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</th>
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<td>
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<a href="https://nodejs.org/api/http.html#http_class_http_agent">http(s).Agent</a> instance
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</td>
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<td>
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Node only. Useful for custom proxy, certificate, or dns lookup.
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</td>
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</tr>
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<tr>
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<th align=left>
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<code>options.request.fetch</code>
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</th>
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<td>
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Function
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</td>
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<td>
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Custom replacement for <a href="https://github.com/bitinn/node-fetch">built-in fetch method</a>. Useful for testing or request hooks.
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</td>
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</tr>
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<tr>
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<th align=left>
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<code>options.request.hook</code>
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</th>
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<td>
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Function
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</td>
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<td>
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Function with the signature <code>hook(request, endpointOptions)</code>, where <code>endpointOptions</code> are the parsed options as returned by <a href="https://github.com/octokit/endpoint.js#endpointmergeroute-options-or-endpointmergeoptions"><code>endpoint.merge()</code></a>, and <code>request</code> is <a href="https://github.com/octokit/request.js#request"><code>request()</code></a>. This option works great in conjuction with <a href="https://github.com/gr2m/before-after-hook">before-after-hook</a>.
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</td>
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</tr>
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<tr>
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<th align=left>
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<a name="options-request-signal"></a><code>options.request.signal</code>
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</th>
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<td>
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<a href="https://github.com/bitinn/node-fetch/tree/e996bdab73baf996cf2dbf25643c8fe2698c3249#request-cancellation-with-abortsignal">new AbortController().signal</a>
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</td>
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<td>
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Use an <code>AbortController</code> instance to cancel a request. In node you can only cancel streamed requests.
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</td>
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</tr>
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<th align=left>
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<code>options.request.log</code>
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</th>
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<td>
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<code>object</code>
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</td>
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<td>
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Used for internal logging. Defaults to <a href="https://developer.mozilla.org/en-US/docs/Web/API/console"><code>console</code></a>.
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</td>
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</tr>
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<tr>
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<th align=left>
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<code>options.request.timeout</code>
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</th>
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<td>
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Number
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</td>
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<td>
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Node only. Request/response timeout in ms, it resets on redirect. 0 to disable (OS limit applies). <a href="#options-request-signal">options.request.signal</a> is recommended instead.
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</td>
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</tr>
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</table>
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All other options except `options.request.*` will be passed depending on the `method` and `url` options.
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1. If the option key is a placeholder in the `url`, it will be used as replacement. For example, if the passed options are `{url: '/orgs/{org}/repos', org: 'foo'}` the returned `options.url` is `https://api.github.com/orgs/foo/repos`
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2. If the `method` is `GET` or `HEAD`, the option is passed as query parameter
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3. Otherwise the parameter is passed in the request body as JSON key.
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**Result**
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`request` returns a promise and resolves with 4 keys
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<table>
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<thead>
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<tr>
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<th align=left>
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key
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</th>
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<th align=left>
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type
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</th>
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<th align=left>
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description
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</th>
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</tr>
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</thead>
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<tr>
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<th align=left><code>status</code></th>
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<td>Integer</td>
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<td>Response status status</td>
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</tr>
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<tr>
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<th align=left><code>url</code></th>
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<td>String</td>
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<td>URL of response. If a request results in redirects, this is the final URL. You can send a <code>HEAD</code> request to retrieve it without loading the full response body.</td>
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</tr>
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<tr>
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<th align=left><code>headers</code></th>
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<td>Object</td>
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<td>All response headers</td>
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</tr>
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<tr>
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<th align=left><code>data</code></th>
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<td>Any</td>
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<td>The response body as returned from server. If the response is JSON then it will be parsed into an object</td>
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</tr>
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</table>
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If an error occurs, the `error` instance has additional properties to help with debugging
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- `error.status` The http response status code
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- `error.request` The request options such as `method`, `url` and `data`
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- `error.response` The http response object with `url`, `headers`, and `data`
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## `request.defaults()`
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Override or set default options. Example:
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```js
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const myrequest = require("@octokit/request").defaults({
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baseUrl: "https://github-enterprise.acme-inc.com/api/v3",
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headers: {
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"user-agent": "myApp/1.2.3",
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authorization: `token 0000000000000000000000000000000000000001`,
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},
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org: "my-project",
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per_page: 100,
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});
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myrequest(`GET /orgs/{org}/repos`);
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```
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You can call `.defaults()` again on the returned method, the defaults will cascade.
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```js
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const myProjectRequest = request.defaults({
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baseUrl: "https://github-enterprise.acme-inc.com/api/v3",
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headers: {
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"user-agent": "myApp/1.2.3",
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},
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org: "my-project",
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});
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const myProjectRequestWithAuth = myProjectRequest.defaults({
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headers: {
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authorization: `token 0000000000000000000000000000000000000001`,
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},
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});
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```
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`myProjectRequest` now defaults the `baseUrl`, `headers['user-agent']`,
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`org` and `headers['authorization']` on top of `headers['accept']` that is set
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by the global default.
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## `request.endpoint`
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See https://github.com/octokit/endpoint.js. Example
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```js
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const options = request.endpoint("GET /orgs/{org}/repos", {
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org: "my-project",
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type: "private",
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});
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// {
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// method: 'GET',
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// url: 'https://api.github.com/orgs/my-project/repos?type=private',
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// headers: {
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// accept: 'application/vnd.github.v3+json',
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// authorization: 'token 0000000000000000000000000000000000000001',
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// 'user-agent': 'octokit/endpoint.js v1.2.3'
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// }
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// }
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```
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All of the [`@octokit/endpoint`](https://github.com/octokit/endpoint.js) API can be used:
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- [`octokitRequest.endpoint()`](#endpoint)
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- [`octokitRequest.endpoint.defaults()`](#endpointdefaults)
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- [`octokitRequest.endpoint.merge()`](#endpointdefaults)
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- [`octokitRequest.endpoint.parse()`](#endpointmerge)
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|
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## Special cases
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|
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<a name="data-parameter"></a>
|
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|
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### The `data` parameter – set request body directly
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|
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Some endpoints such as [Render a Markdown document in raw mode](https://developer.github.com/v3/markdown/#render-a-markdown-document-in-raw-mode) don’t have parameters that are sent as request body keys, instead the request body needs to be set directly. In these cases, set the `data` parameter.
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|
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```js
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const response = await request("POST /markdown/raw", {
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data: "Hello world github/linguist#1 **cool**, and #1!",
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headers: {
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accept: "text/html;charset=utf-8",
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"content-type": "text/plain",
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},
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});
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// Request is sent as
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//
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// {
|
||
// method: 'post',
|
||
// url: 'https://api.github.com/markdown/raw',
|
||
// headers: {
|
||
// accept: 'text/html;charset=utf-8',
|
||
// 'content-type': 'text/plain',
|
||
// 'user-agent': userAgent
|
||
// },
|
||
// body: 'Hello world github/linguist#1 **cool**, and #1!'
|
||
// }
|
||
//
|
||
// not as
|
||
//
|
||
// {
|
||
// ...
|
||
// body: '{"data": "Hello world github/linguist#1 **cool**, and #1!"}'
|
||
// }
|
||
```
|
||
|
||
### Set parameters for both the URL/query and the request body
|
||
|
||
There are API endpoints that accept both query parameters as well as a body. In that case you need to add the query parameters as templates to `options.url`, as defined in the [RFC 6570 URI Template specification](https://tools.ietf.org/html/rfc6570).
|
||
|
||
Example
|
||
|
||
```js
|
||
request(
|
||
"POST https://uploads.github.com/repos/octocat/Hello-World/releases/1/assets{?name,label}",
|
||
{
|
||
name: "example.zip",
|
||
label: "short description",
|
||
headers: {
|
||
"content-type": "text/plain",
|
||
"content-length": 14,
|
||
authorization: `token 0000000000000000000000000000000000000001`,
|
||
},
|
||
data: "Hello, world!",
|
||
}
|
||
);
|
||
```
|
||
|
||
## LICENSE
|
||
|
||
[MIT](LICENSE)
|