adminjs/lib/backend/bundler/user-components-bundler.js

Admin panel for apps written in node.js

import * as fs from 'fs';
import * as path from 'path';
import * as util from 'util';
import bundler from './bundler.js';
import generateEntry from './generate-user-component-entry.js';
import { ADMIN_JS_TMP_DIR } from '../../constants.js';
import env from './bundler-env.js';
const entryPath = path.join(ADMIN_JS_TMP_DIR, '.entry.js');
const outPath = path.join(ADMIN_JS_TMP_DIR, 'bundle.js');
async function build(admin, {
  write = false,
  watch = false
} = {}) {
  const {
    options: {
      bundler: bundlerOptions
    }
  } = admin;

  // if components bundle was requested and there are already bundled - return
  // that instead of bundling them again
  if (!write) {
    try {
      const existingBundle = await util.promisify(fs.readFile)(outPath, 'utf-8');
      return existingBundle;
    } catch (error) {
      if (error.code !== 'ENOENT') {
        throw error;
      }
    }
  }
  try {
    await util.promisify(fs.mkdir)(ADMIN_JS_TMP_DIR, {
      recursive: true
    });
  } catch (error) {
    if (error.code !== 'EEXIST') {
      throw error;
    }
  }
  const entryFile = generateEntry(admin, ADMIN_JS_TMP_DIR);
  await util.promisify(fs.writeFile)(entryPath, entryFile);
  const output = await bundler({
    name: 'AdminJSCustom',
    input: entryPath,
    watch,
    file: write ? outPath : null,
    minify: env === 'production',
    ...bundlerOptions
  });
  let jsOutput = output.code;
  if (output.map) {
    jsOutput += `
//# sourceMappingURL=data:application/json;charset=utf-8;base64,${Buffer.from(JSON.stringify(output.map)).toString('base64')}
    `;
  }
  return jsOutput;
}
export { build as default, outPath };