docs: add JS API documentation
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				| @ -105,6 +105,7 @@ After running the tests the command `semantic-release` will execute the followin | ||||
|   - [CI configurations](docs/recipes/README.md) | ||||
|   - [Package managers and languages](docs/recipes/README.md) | ||||
| - Developer guide | ||||
|   - [JavaScript API](docs/developer-guide/js-api.md) | ||||
|   - [Plugins](docs/developer-guide/plugin.md) | ||||
|   - [Shareable configuration](docs/developer-guide/shareable-configuration.md) | ||||
| - Support | ||||
|  | ||||
| @ -22,6 +22,7 @@ | ||||
| - [Package managers and languages](docs/recipes/README.md) | ||||
| 
 | ||||
| ## Developer guide | ||||
| - [JavaScript API](docs/developer-guide/js-api.md) | ||||
| - [Plugin](docs/developer-guide/plugin.md) | ||||
| - [Shareable configuration](docs/developer-guide/shareable-configuration.md) | ||||
| 
 | ||||
|  | ||||
| @ -1,4 +1,5 @@ | ||||
| # Developer guide | ||||
| 
 | ||||
| - [JavaScript API](js-api.md) | ||||
| - [Plugins](plugin.md) | ||||
| - [Shareable configuration](shareable-configuration.md) | ||||
|  | ||||
							
								
								
									
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							| @ -0,0 +1,270 @@ | ||||
| # JavaScript API | ||||
| 
 | ||||
| ## Usage | ||||
| 
 | ||||
| ```js | ||||
| const semanticRelease = require('semantic-release'); | ||||
| const {WritableStreamBuffer} = require('stream-buffers'); | ||||
| 
 | ||||
| const stdoutBuffer = WritableStreamBuffer(); | ||||
| const stderrBuffer = WritableStreamBuffer(); | ||||
| 
 | ||||
| try { | ||||
|   const result = await semanticRelease({ | ||||
|     // Core options | ||||
|     branch: 'master', | ||||
|     repositoryUrl: 'https://github.com/me/my-package.git', | ||||
|     // Shareable config | ||||
|     extends: 'my-shareable-config', | ||||
|     // Plugin options | ||||
|     githubUrl: 'https://my-ghe.com', | ||||
|     githubApiPathPrefix: '/api-prefix' | ||||
|   }, { | ||||
|     // Run semantic-release from `/path/to/git/repo/root` without having to change local process `cwd` with `process.chdir()` | ||||
|     cwd: '/path/to/git/repo/root', | ||||
|     // Pass the variable `MY_ENV_VAR` to semantic-release without having to modify the local `process.env` | ||||
|     env: {...process.env, MY_ENV_VAR: 'MY_ENV_VAR_VALUE'}, | ||||
|     // Store stdout and stderr to use later instead of writing to `process.stdout` and `process.stderr` | ||||
|     stdout: stdoutBuffer, | ||||
|     stderr: stderrBuffer | ||||
|   }); | ||||
| 
 | ||||
|   if (result) { | ||||
|     const {lastRelease, commits, nextRelease, releases} = result; | ||||
| 
 | ||||
|     console.log(`Published ${nextRelease.type} release version ${nextRelease.version} containing ${commits.length} commits.`); | ||||
| 
 | ||||
|     if (lastRelease.version) { | ||||
|       console.log(`The last release was "${lastRelease.version}".`); | ||||
|     } | ||||
| 
 | ||||
|     for (const release of releases) { | ||||
|       console.log(`The release was published with plugin "${pluginName}".`); | ||||
|     } | ||||
|   } else { | ||||
|     console.log('No release published.'); | ||||
|   } | ||||
| 
 | ||||
|   // Get stdout and stderr content | ||||
|   const logs = stdoutBuffer.getContentsAsString('utf8'); | ||||
|   const errors = stderrBuffer.getContentsAsString('utf8'); | ||||
| } catch (err) { | ||||
|   console.error('The automated release failed with %O', err) | ||||
| } | ||||
| ``` | ||||
| 
 | ||||
| ## API | ||||
| 
 | ||||
| ### semanticRelease([options], [config]) => Promise<Result> | ||||
| 
 | ||||
| Run **semantic-release** and returns a `Promise` that resolves to a [Result](#result) object. | ||||
| 
 | ||||
| #### options | ||||
| 
 | ||||
| Type: `Object` | ||||
| 
 | ||||
| **semantic-release** options. | ||||
| 
 | ||||
| Can be used to set any [core option](../usage/configuration.md#configuration) or [plugin options](../usage/plugins.md#configuration). | ||||
| 
 | ||||
| Each option, will take precedence over options configured in the [configuration file](../usage/configuration.md#configuration) and [shareable configurations](../usage/configuration.md#extends). | ||||
| 
 | ||||
| #### config | ||||
| 
 | ||||
| Type: `Object` | ||||
| 
 | ||||
| **semantic-release** configuration specific for API usage. | ||||
| 
 | ||||
| ##### cwd | ||||
| 
 | ||||
| Type: `String`<br> | ||||
| Default: `process.cwd()` | ||||
| 
 | ||||
| The current working directory to use. It should be configured to the root of the Git repository to release from. | ||||
| 
 | ||||
| It allows to run **semantic-release** from a specific path without having to change the local process `cwd` with `process.chdir()`. | ||||
| 
 | ||||
| ##### env | ||||
| 
 | ||||
| Type: `Object`<br> | ||||
| Default: `process.env` | ||||
| 
 | ||||
| The environment variables to use. | ||||
| 
 | ||||
| It allows to run **semantic-release** with specific environment variables without having to modify the local `process.env`. | ||||
| 
 | ||||
| ##### stdout | ||||
| 
 | ||||
| Type: [`stream.Writable`](https://nodejs.org/api/stream.html#stream_writable_streams)<br> | ||||
| Default: `process.stdout` | ||||
| 
 | ||||
| The [writable stream](https://nodejs.org/api/stream.html#stream_writable_streams) used to log information. | ||||
| 
 | ||||
| It allows to configure **semantic-release** to write logs to a specific stream rather than the local `process.stdout`. | ||||
| 
 | ||||
| ##### stderr | ||||
| 
 | ||||
| Type: [`stream.Writable`](https://nodejs.org/api/stream.html#stream_writable_streams)<br> | ||||
| Default: `process.stderr` | ||||
| 
 | ||||
| The [writable stream](https://nodejs.org/api/stream.html#stream_writable_streams) used to log errors. | ||||
| 
 | ||||
| It allows to configure **semantic-release** to write errors to a specific stream rather than the local `process.stderr`. | ||||
| 
 | ||||
| ### Result | ||||
| 
 | ||||
| Type: `Object` `Boolean`<br> | ||||
| 
 | ||||
| And object with [`lastRelease`](#lastrelease), [`nextRelease`](#nextrelease), [`commits`](#commits) and [`releases`](#releases) if a release is published or `false` if no release was published. | ||||
| 
 | ||||
| #### lastRelease | ||||
| 
 | ||||
| Type: `Object` | ||||
| 
 | ||||
| Information related to the last release found: | ||||
| 
 | ||||
| | Name    | Type     | Description                                                                                        | | ||||
| |---------|----------|----------------------------------------------------------------------------------------------------| | ||||
| | version | `String` | The version of the last release.                                                                   | | ||||
| | gitHead | `String` | The sha of the last commit being part of the last release.                                         | | ||||
| | gitTag  | `String` | The [Git tag](https://git-scm.com/book/en/v2/Git-Basics-Tagging) associated with the last release. | | ||||
| 
 | ||||
| **Notes**: If no previous release is found, `lastRelease` will be an empty `Object`. | ||||
| 
 | ||||
| Example: | ||||
| ```js | ||||
| { | ||||
|   gitHead: 'da39a3ee5e6b4b0d3255bfef95601890afd80709', | ||||
|   version: '1.0.0', | ||||
|   gitTag: 'v1.0.0', | ||||
| } | ||||
| ``` | ||||
| 
 | ||||
| #### commits | ||||
| 
 | ||||
| Type: `Array<Object>` | ||||
| 
 | ||||
| The list of commit included in the new release.<br> | ||||
| Each commit object has the following properties: | ||||
| 
 | ||||
| | Name            | Type     | Description                                     | | ||||
| |-----------------|----------|-------------------------------------------------| | ||||
| | commit          | `Object` | The commit abbreviated and full hash.           | | ||||
| | commit.long     | `String` | The commit hash.                                | | ||||
| | commit.short    | `String` | The commit abbreviated hash.                    | | ||||
| | tree            | `Object` | The commit abbreviated and full tree hash.      | | ||||
| | tree.long       | `String` | The commit tree hash.                           | | ||||
| | tree.short      | `String` | The commit abbreviated tree hash.               | | ||||
| | author          | `Object` | The commit author information.                  | | ||||
| | author.name     | `String` | The commit author name.                         | | ||||
| | author.email    | `String` | The commit author email.                        | | ||||
| | author.short    | `String` | The commit author date.                         | | ||||
| | committer       | `Object` | The committer information.                      | | ||||
| | committer.name  | `String` | The committer name.                             | | ||||
| | committer.email | `String` | The committer email.                            | | ||||
| | committer.short | `String` | The committer date.                             | | ||||
| | subject         | `String` | The commit subject.                             | | ||||
| | body            | `String` | The commit body.                                | | ||||
| | message         | `String` | The commit full message (`subject` and `body`). | | ||||
| | hash            | `String` | The commit hash.                                | | ||||
| | committerDate   | `String` | The committer date.                             | | ||||
| 
 | ||||
| Example: | ||||
| ```js | ||||
| [ | ||||
|   { | ||||
|     commit: { | ||||
|       long: '68eb2c4d778050b0701136ca129f837d7ed494d2', | ||||
|       short: '68eb2c4' | ||||
|     }, | ||||
|     tree: { | ||||
|       long: '7ab515d12bd2cf431745511ac4ee13fed15ab578', | ||||
|       short: '7ab515d' | ||||
|     }, | ||||
|     author: { | ||||
|       name: 'Me', | ||||
|       email: 'me@email.com', | ||||
|       date: 2018-07-22T20:52:44.000Z | ||||
|     }, | ||||
|     committer: { | ||||
|       name: 'Me', | ||||
|       email: 'me@email.com', | ||||
|       date: 2018-07-22T20:52:44.000Z | ||||
|     }, | ||||
|     subject: 'feat: a new feature', | ||||
|     body: 'Description of the new feature', | ||||
|     hash: '68eb2c4d778050b0701136ca129f837d7ed494d2', | ||||
|     message: 'feat: a new feature\n\nDescription of the new feature', | ||||
|     committerDate: 2018-07-22T20:52:44.000Z | ||||
|   } | ||||
|  ] | ||||
| ``` | ||||
| 
 | ||||
| #### nextRelease | ||||
| 
 | ||||
| Type: `Object` | ||||
| 
 | ||||
| Information related to the newly published release: | ||||
| 
 | ||||
| | Name    | Type     | Description                                                                                       | | ||||
| |---------|----------|---------------------------------------------------------------------------------------------------| | ||||
| | type    | `String` | The [semver](https://semver.org) type of the release (`patch`, `minor` or `major`).               | | ||||
| | version | `String` | The version of the new release.                                                                   | | ||||
| | gitHead | `String` | The sha of the last commit being part of the new release.                                         | | ||||
| | gitTag  | `String` | The [Git tag](https://git-scm.com/book/en/v2/Git-Basics-Tagging) associated with the new release. | | ||||
| | notes   | `String` | The release notes for the new release.                                                            | | ||||
| 
 | ||||
| Example: | ||||
| ```js | ||||
| { | ||||
|   type: 'minor', | ||||
|   gitHead: '68eb2c4d778050b0701136ca129f837d7ed494d2', | ||||
|   version: '1.1.0', | ||||
|   gitTag: 'v1.1.0', | ||||
|   notes: 'Release notes for version 1.1.0...', | ||||
| } | ||||
| ``` | ||||
| 
 | ||||
| #### releases | ||||
| 
 | ||||
| Type: `Array<Object>` | ||||
| 
 | ||||
| The list of releases published, one release per [publish plugin](../usage/plugins.md#publish-plugin).<br> | ||||
| Each release object has the following properties: | ||||
| 
 | ||||
| | Name       | Type     | Description                                                                                   | | ||||
| |------------|----------|-----------------------------------------------------------------------------------------------| | ||||
| | name       | `String` | **Optional.** The release name, only if set by the corresponding `publish` plugin.            | | ||||
| | url        | `String` | **Optional.** The release URL, only if set by the corresponding `publish` plugin.             | | ||||
| | type       | `String` | The [semver](https://semver.org) type of the release (`patch`, `minor` or `major`).           | | ||||
| | version    | `String` | The version of the release.                                                                   | | ||||
| | gitHead    | `String` | The sha of the last commit being part of the release.                                         | | ||||
| | gitTag     | `String` | The [Git tag](https://git-scm.com/book/en/v2/Git-Basics-Tagging) associated with the release. | | ||||
| | notes      | `String` | The release notes for the release.                                                            | | ||||
| | pluginName | `String` | The name of the plugin that published the release.                                            | | ||||
| 
 | ||||
| Example: | ||||
| ```js | ||||
| [ | ||||
|   { | ||||
|     name: 'GitHub release', | ||||
|     url: 'https://github.com/me/my-package/releases/tag/v1.1.0', | ||||
|     type: 'minor', | ||||
|     gitHead: '68eb2c4d778050b0701136ca129f837d7ed494d2', | ||||
|     version: '1.1.0', | ||||
|     gitTag: 'v1.1.0', | ||||
|     notes: 'Release notes for version 1.1.0...', | ||||
|     pluginName: '@semantic-release/github' | ||||
|   }, | ||||
|   { | ||||
|     name: 'npm package (@latest dist-tag)', | ||||
|     url: 'https://www.npmjs.com/package/my-package', | ||||
|     type: 'minor', | ||||
|     gitHead: '68eb2c4d778050b0701136ca129f837d7ed494d2', | ||||
|     version: '1.1.0', | ||||
|     gitTag: 'v1.1.0', | ||||
|     notes: 'Release notes for version 1.1.0...', | ||||
|     pluginName: '@semantic-release/npm' | ||||
|    } | ||||
|  ] | ||||
| ``` | ||||
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