preparemessage_hook.js

#!/usr/bin/env node
const fs = require('fs')
const path = require('path')

const _ = require('lodash')

const {parseChanges} = require('../shared/get-changed-files')
const {getStagedChanges} = require('../shared/utils')
const {projectPath} = require('../constants')

const messageReg = /[^\]^\[]+$/i

const prefixes = _.keys(parseChanges(getStagedChanges()))
    .sort()
    .map(el => `[${el}]`)
    .join('')

const gitMsgPath = path.join(projectPath, '.git/COMMIT_EDITMSG')
const commitMsg = fs.readFileSync(gitMsgPath, {
    encoding: 'utf8',
})
const parsedCommitMsg = commitMsg
    .match(messageReg)[0]
    .replace('\n', ' ')
    .trimLeft()

fs.writeFileSync(`./.git/COMMIT_EDITMSG`, `${prefixes} ${parsedCommitMsg}`, {
    encoding: 'utf-8',
})



// get changed files

const fs = require('fs')
const path = require('path')

const shelljs = require('shelljs')

function currentBranch() {
    return (
        shelljs.exec('git rev-parse --abbrev-ref HEAD', {
            silent: true,
        }) + ''
    )
}

function parse(str) {
    return str
        .trim()
        .split(/[\n]/)
        .map(el => {
            return el.split(/[:]/).map(el => el.trim())
        })
}

function getRepos(type) {
    const filePath = path.resolve(`./${type}/.reference`)
    const components = fs.readFileSync(filePath, {
        encoding: 'utf-8',
    })

    return parse(components)
}

function getStagedChanges() {
    return shelljs.exec('git diff --name-only --cached', {silent: true})
}

const promisifyCommand = exec => (command, args = {}) => {
    console.log('Running command: ', command)
    return new Promise((res, rej) => {
        exec(command, {...args, async: true}, (code, out, err) => {
            return code == 0 ? res(out) : rej(err)
        })
    })
}