A script to capture historical commit sizes.

historical-commit-sizes.js

const gitlog = require('gitlog');
const util = require('util');
const path = require('path')
const fs = require('fs')
const exec = util.promisify(require('child_process').exec);
const execSync = require('child_process').execSync;

async function asyncForEach(array, callback, done) {
    for (let index = 0; index < array.length; index++) {
        await callback(array[index], index, array);
        if(index === array.length - 1) {
            if(done) done()
        }
    }
}

console.log(path.join(__dirname, '../ecom-web-app'))
const options = {
    repo: path.join(__dirname, '../ecom-web-app'),
    number: 2,
    fields:
        ['hash',
            'abbrevHash',
            'subject',
            'authorName',
            'authorDateRel',
        ],
    execOptions:
        {
            maxBuffer: 1000 * 1024,
        },
};

// Asynchronous (with Callback)
// gitlog(options, (error, commits) => {
//   // Commits is an array of commits in the repo
//   console.log(commits);
// });

// Synchronous
let commits = gitlog(options);
const waitFor = (ms) => new Promise(r => setTimeout(r, ms));
const store = []
asyncForEach(commits, async (commit) => {
    await exec(
        `git reset --hard; git checkout ${commit.hash}`,
        {
            stdio: 'inherit',
            cwd:  path.join(__dirname , '../ecom-web-app')
        },
    );

    execSync(
        `source ~/.bashrc; nvm use v8.10 && yarn`,
        {
            stdio: 'inherit',
            cwd:  path.join(__dirname , '../ecom-web-app')
        },
    );

    execSync(
        `source ~/.bashrc; nvm use v8.10 && NODE_ENV=production ./node_modules/.bin/webpack -p --config webpack/client.prod.config.js --profile --json > stats.json`,
        {
            stdio: 'inherit',
            cwd:  path.join(__dirname , '../ecom-web-app')
        },
    );
    const {stdout} = await exec(
        `npx  webpack-bundle-size-analyzer --json stats.json`,
        {
            cwd: path.join(__dirname, '../ecom-web-app')
        },
    );
    const objToPass = Object.assign({}, JSON.parse(stdout)[0], commit)
    store.push(objToPass)
}, ()=>{
    fs.writeFileSync('store.json', JSON.stringify(store))
})