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changelog.js
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changelog.js
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const accessSync = require('fs-access').sync
const chalk = require('chalk')
const checkpoint = require('../checkpoint')
const conventionalChangelog = require('conventional-changelog')
const fs = require('fs')
const runLifecycleScript = require('../run-lifecycle-script')
const writeFile = require('../write-file')
module.exports = function (args, newVersion) {
if (args.skip.changelog) return Promise.resolve()
return runLifecycleScript(args, 'prechangelog')
.then(() => {
return outputChangelog(args, newVersion)
})
.then(() => {
return runLifecycleScript(args, 'postchangelog')
})
}
function outputChangelog (args, newVersion) {
return new Promise((resolve, reject) => {
createIfMissing(args)
var header = '# Change Log\n\nAll notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.\n'
var oldContent = args.dryRun ? '' : fs.readFileSync(args.infile, 'utf-8')
// find the position of the last release and remove header:
if (oldContent.indexOf('<a name=') !== -1) {
oldContent = oldContent.substring(oldContent.indexOf('<a name='))
}
var content = ''
var context
if (args.dryRun) context = { version: newVersion }
var changelogStream = conventionalChangelog({
debug: args.verbose && console.info.bind(console, 'conventional-changelog'),
preset: args.preset || 'angular',
tagPrefix: args.tagPrefix
}, context, { merges: null, path: args.path })
.on('error', function (err) {
return reject(err)
})
changelogStream.on('data', function (buffer) {
content += buffer.toString()
})
changelogStream.on('end', function () {
checkpoint(args, 'outputting changes to %s', [args.infile])
if (args.dryRun) console.info(`\n---\n${chalk.gray(content.trim())}\n---\n`)
else writeFile(args, args.infile, header + '\n' + (content + oldContent).replace(/\n+$/, '\n'))
return resolve()
})
})
}
function createIfMissing (args) {
try {
accessSync(args.infile, fs.F_OK)
} catch (err) {
if (err.code === 'ENOENT') {
checkpoint(args, 'created %s', [args.infile])
args.outputUnreleased = true
writeFile(args, args.infile, '\n')
}
}
}