gilbarbara/styled-minimal

/*eslint-disable no-console */
const { existsSync, readdirSync } = require('fs');
const { resolve } = require('path');
const chalk = require('chalk');
const { fileSync } = require('gzip-size');
const ps = require('prettysize');

const limit = 1024 * 45;

function getSizes(path, regex = /\.js$/) {
  if (!existsSync(path)) {
    return 0;
  }

  return readdirSync(path)
    .filter(file => regex.test(file))
    .reduce((acc, file) => acc + fileSync(resolve(path, file)), 0);
}

const totalSize = getSizes('./', /^([A-Z]|index).*\.js/) + getSizes('./utils');

console.log('');
console.log(chalk.magenta('>>> LIBRARY SIZE'));
console.log('');

if (!totalSize) {
  console.log([chalk.bgRed(' FAIL '), chalk.red('Nothing to measure')].join(' '));
  process.exit(1);
}

if (totalSize > limit) {
  console.log(
    [chalk.bgRed(' FAIL '), chalk.red(`${ps(totalSize)} > ${ps(limit)} (gzip)`)].join(' '),
  );
  process.exit(1);
}

console.log(
  [chalk.bgGreen(' PASS '), chalk.green(`${ps(totalSize)} < ${ps(limit)} (gzip)`)].join(' '),
);