ezchangelog

Make it easy to update changelog with commit messages.

Usage

npm i -g ezchangelog

cd repo

# create a new changelog.md file
changelog

# do some commits

# prepend new changes use `git log --no-merges`
changelog

# prepend new changes
git log --before Nov.10 | changelog

Example

See changelog

Command line

changelog -h to see options.

There are two ways in the command line.

The following command will call git log --no-merges to generate changes info:

changelog [options]

You can also pipe the changes into it:

git log --before Nov.10 | changelog [options]

package.json

{
  "changelog": {
    "baseUrl": "https://github.com/zoubin/ezchangelog/commit/",
    "plugin": ["pluginName"],
    "out": "changelog.md"
  }
}

There are links to all commits.

baseUrl: specify the base path for each commit. By default, commits are linked to github.

out: specify the changelog file path

API

var changelog = require('ezchangelog')

changelog(opts)

Return a transform to process git log outputs.

opts.baseUrl

Specify the url base for commits.

Type: String

opts.plugin

Specify extra plugins to apply to the pipeline.

Type: Array

Each element should be an Array, if the plugin should take an extra argument besides the Changelog instance.

{
  plugin: [ [function pluginFn(instance, opt) {}, opt] ]
}

changelog.Changelog

The constructor for loggers.

You can process the pipeline property and the plugin function.

pipeline

A duplex created by labeled-stream-splicer, assembling a group of transforms to process the log.

There are two main phases:

• parse: containing sub-phases: split, commit, tag, url. The main purpose of this phase is to create commit objects.
• format: containing one sub-phase: markdownify. Commit objects are formatted to markdown in this phase.

The default commit object is like:

{
  commit: {
    // commit sha1
    long: '3bf9055b732cc23a9c14f295ff91f48aed5ef31a',
    short: '3bf9055',
  },
  committer: {
    // commit date
    date: new Date('Sat Nov 7 18:41:37 2015 +0800'),
  },
  // raw message lines
  messages: ['', '    4.0.3', ''],
  // raw headers before the messages
  headers: [
    ['Author', 'zoubin <zoubin04@gmail.com>'],
    ['Date', 'Sat Nov 7 18:41:37 2015 +0800'],
  ],
  // the first non-empty message line
  subject: '4.0.3',
  // other message lines
  body: '',
  // git tag
  tag: 'v4.0.3',
  // link to the commit. opts.baseUrl should be specified.
  url: 'https://github.com/zoubin/ezchangelog/commit/3bf9055',
}

You can manipulate the pipeline in the way labeled-stream-splicer supports.

plugin

Type: Array

Each element is a plugin with optional argument.

A plugin is used to manipulate the pipeline property:

var Changelog = require('ezchangelog').Changelog
var c = new Changelog()
c.plugin(fn)

source.pipe(c.pipeline).pipe(dest)

funciton fn(c, opts) {
  // parse emails
  c.pipeline.get('parse').push(emailParser)

  // replace the default formatter with a custom one
  c.pipeline.get('format').splice('markdownify', 1, myOwesomeFormatter)
}