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Author message:

Use @semantic-release/commit-analyzer

sr-commit-analyzer

Customizable commit-analyzer plugin for semantic-release based on conventional-changelog

Install

npm install --save-dev semantic-release sr-commit-analyzer

Set the analyzeCommits plugin for semantic-release in package.json. See semantic-release plugins.

{
  "release": {
    "analyzeCommits": "sr-commit-analyzer"
  }
}

Options

By default sr-commit-analyzer uses the angular format described in Angular convention.

Additionnal options can be set within the plugin definition in package.json to use a different commit format and to customize it:

{
  "release": {
    "analyzeCommits": {
      "path": "sr-commit-analyzer",
      "preset": "angular",
      "releaseRules": [
        {"type": "docs", "scope":"README", "release": "patch"},
        {"type": "refactor", "release": "patch"},
        {"type": "style", "release": "patch"}
      ],
      "parserOpts": {
        "noteKeywords": ["BREAKING CHANGE", "BREAKING CHANGES", "BREAKING"]
      }
    }
  }
}

Option	Description	Default
preset	conventional-changelog preset (possible values: angular, atom, codemirror, ember, eslint, express, jquery, jscs, jshint).	angular
config	NPM package name of a custom conventional-changelog preset.	-
releaseRules	An external module, a path to a module or an Array of rules. See Release rules.	See Release rules
parserOpts	Additional conventional-commits-parser options that will extends ones loaded by preset or config. See Parser options.	-

NOTE: config will be overwritten by the values of preset. You should use either preset or config, but not both. Individual properties of parserOpts will overwrite ones loaded with preset or config.

Release Rules

Rules definition

This is an Array of rule objects. A rule object has a release property and 1 or more criteria.

{
  "release": {
    "analyzeCommits": {
      "path": "sr-commit-analyzer",
      "preset": "angular",
      "releaseRules": [
        {"type": "docs", "scope": "README", "release": "patch"},
        {"type": "refactor", "scope": "/core-.*/", "release": "minor"},
        {"type": "refactor", "release": "patch"}
      ]
    }
  }
}

Rules matching

Each commit will be compared with each rule and when it matches, the commit will be associated with the release type in the rule's release property. If a commit match multiple rules, the highest release type (major > minor > patch) is associated with the commit.

See release types for the release types hierarchy.

With the previous example:

• Commits with type 'docs' and scope 'README' will be associated with a patch release.
• Commits with type 'refactor' and scope starting with 'core-' (i.e. 'core-ui', 'core-rules', ...) will be associated with a minor release.
• Other commits with type 'refactor' (without scope or with a scope not matching the regexp /core-.*/) will be associated with a patch release.

Default rules matching

If a commit doesn't match any rule in releaseRules it will be evaluated agaisnt the default release rules.

With the previous example:

• Commits with a breaking change will be associated with a minor release.
• Commits with type 'feat' will be associated with a minor release.
• Commits with type 'fix' will be associated with a patch release.
• Commits with type 'perf' will be associated with a patch release.

No rules matching

If a commit doesn't match any rules in releaseRules or in default release rules then no release type will be associated with the commit.

With the previous example:

• Commits with type 'style' will not be associated with a release type.
• Commits with type 'test' will not be associated with a release type.
• Commits with type 'chore' will not be associated with a release type.

Multiple commits

If there is multiple commits that match one or more rules, the one with the highest realease type will determine the global release type.

Considering the following commits:

• docs(README): Add more details to the API docs
• feat(API): Add a new method to the public API

With the previous example the release type determine by the plugin will be minor.

Specific commit properties

The properties to set in the rules will depends on the commit style choosen. For example conventional-changelog-angular use the commit properties type, scope and subject but conventional-changelog-eslint uses tag and message.

For example with eslint preset:

{
  "release": {
    "analyzeCommits": {
      "path": "sr-commit-analyzer",
      "preset": "eslint",
      "releaseRules": [
        {"tag": "Docs", "message":"/README/", "release": "patch"},
        {"type": "New", "release": "patch"}
      ]
    }
  }
}

With this configuration:

• Commits with tag 'Docs', that contains 'README' in their header message will be associated with a patch release.
• Commits with tag 'New' will be associated with a patch release.
• Commits with tag 'Breaking' will be associated with a major release (per default release rules).
• Commits with tag 'Fix' will be associated with a patch release (per default release rules).
• Commits with tag 'Update' will be associated with a minor release (per default release rules).
• Commits with tag 'New' will be associated with a minor release (per default release rules).
• All other commits will not be associated with a release type.

External package / file

releaseRules can also reference a module, either by it's npm name or path:

{
  "release": {
    "analyzeCommits": {
      "path": "sr-commit-analyzer",
      "preset": "angular",
      "releaseRules": "./config/release-rules.js"
    }
  }
}

// File: config/release-rules.js
module.exports = [
  {type: 'docs', scope: 'README', release: 'patch'},
  {type: 'refactor', scope: /core-.*/, release: 'minor'},
  {type: 'refactor', release: 'patch'},
];

Parser Options

Allow to overwrite specific conventional-commits-parser options. This is convenient to use a conventional-changelog preset with some customizations without having to create a new module.

The following example uses Angular convention but will consider a commit to be a breaking change if it's body contains BREAKING CHANGE, BREAKING CHANGES or BREAKING. By default the preset checks only for BREAKING CHANGE and BREAKING CHANGES.

{
  "release": {
    "analyzeCommits": {
      "path": "sr-commit-analyzer",
      "preset": "angular",
      "parserOpts": {
        "noteKeywords": ["BREAKING CHANGE", "BREAKING CHANGES", "BREAKING"],
      }
    }
  }
}