build.mts

import * as esbuild from 'esbuild';

const targetBasePath = `${import.meta.dir ?? '.'}/src`;
const distBasePath = `${import.meta.dir ?? '.'}/dist`;

// ベースディレクトリからのパス（拡張子は除く）
const files = ['index'];

function entrypoints(files: string[], extension: 'ts' | 'mts' | 'cts') {
  return files.map((v) => `${targetBasePath}/${v}.${extension}`);
}

const esms = entrypoints(files, 'mts');
const cjss = entrypoints(files, 'cts');

await Promise.all([
  // Bun.build({
  //   entrypoints: esms,
  //   outdir: `${distBasePath}/import`,
  //   target: "node",
  //   format: "esm",
  //   splitting: true,
  //   minify: true,
  //   naming: "[dir]/[name].m[ext]",
  // })
  //   .then(console.info)
  //   .catch(console.error),
  esbuild
    .build({
      entryPoints: esms,
      bundle: true,
      minify: true,
      splitting: true,
      outdir: `${distBasePath}/import`,
      platform: 'neutral',
      format: 'esm',
      target: 'esnext',
      outExtension: { '.js': '.mjs' },
      external: ['ws'],
    })
    .then(console.info)
    .catch(console.error),
  esbuild
    .build({
      entryPoints: cjss,
      bundle: true,
      minify: true,
      outdir: `${distBasePath}/require`,
      platform: 'node',
      format: 'cjs',
      target: 'esnext',
      outExtension: { '.js': '.cjs' },
      external: ['ws'],
    })
    .then(console.info)
    .catch(console.error),
]);