build-js-core.js

/* eslint import/no-extraneous-dependencies: ["error", {"devDependencies": true}] */
/* eslint no-console: "off" */
const exec = require('exec-sh').promise;
const fs = require('fs-extra');
const chalk = require('chalk');
const elapsed = require('elapsed-time-logger');

const config = require('./build-config');
const { outputDir } = require('./utils/output-dir');
const { banner } = require('./utils/banner');

async function buildCore(modules) {
  const filename = `swiper.esm`;
  const coreContent = [
    banner(),
    `export { default as Swiper, default } from './core/core.js';`,
    ...modules.map(
      ({ name, capitalized }) =>
        `export { default as ${capitalized} } from './modules/${name}/${name}.js';`,
    ),
  ].join('\n');

  await Promise.all([
    fs.writeFile(`./${outputDir}/${filename}.js`, coreContent),
    exec(`npx babel src --out-dir ${outputDir} --config-file ./scripts/babel/babel.config.core.js`),
  ]);

  await fs.unlink(`./${outputDir}/swiper.js`);
}

async function build() {
  elapsed.start('core');
  const modules = [];
  config.modules.forEach((name) => {
    // eslint-disable-next-line
    const capitalized = name
      .split('-')
      .map((word) => {
        return word
          .split('')
          .map((char, index) => {
            if (index === 0) return char.toUpperCase();
            return char;
          })
          .join('');
      })
      .join('');
    const jsFilePath = `./src/modules/${name}/${name}.js`;
    if (fs.existsSync(jsFilePath)) {
      modules.push({ name, capitalized });
    }
  });

  await buildCore(modules, 'esm');
  elapsed.end('core', chalk.green('Core build completed!'));
}

module.exports = build;