bundle_esbuild.js

import * as esbuild from 'esbuild'
import path from 'node:path'
import fs from 'node:fs'
import { fileURLToPath } from 'node:url'

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);


// esbuild でバンドルするファイルのリスト
const files = [
  // main code
  'src/wnako3.mts',
  // mjs
  'src/wnako3webworker.mjs',
  'src/plugin_webworker.mjs',
  'src/plugin_kansuji.mjs',
  'src/plugin_markup.mjs',
  'src/plugin_datetime.mjs',
  'src/plugin_caniuse.mjs',
  // mts
  'src/plugin_keigo.mts',
  'src/plugin_three.mts',
  'src/plugin_turtle.mts',
  'src/plugin_weykturtle3d.mts',
  'editor/edit_main.jsx',
  'editor/version_main.jsx'
]
const outdir = path.join(__dirname, 'release')
const watchMode = process.argv.includes('--watch')
const filesFullpath = files.map((f) => path.join(__dirname, f))

// create outdir
if (!fs.existsSync(outdir)) {
  fs.mkdirSync(outdir)
  console.log(`[esbuild] created ${outdir}`)
}
// build options
if (!watchMode) {
  // normal mode
  for (const f of files) {
    const outfile = path.join(outdir, path.basename(f).replace(/\.(mjs|mts|jsx)$/, '.js'))
    const options = {
      entryPoints: [f],
      bundle: true,
      outfile,
      minify: true,
      sourcemap: true,
    }
    console.log('[esbuild]', f)
    await esbuild.build(options)
  }
  // 例外的なコピー
  const src = path.join(outdir, 'edit_main.js')
  if (fs.existsSync(src)) {
    fs.copyFileSync(src, path.join(outdir, 'editor.js'))
    fs.copyFileSync(path.join(outdir, 'version_main.js'), path.join(outdir, 'version.js'))
  }
} else {
  // watch mode
  const ctxList = []
  for (const f of files) {
    const outfile = path.join(outdir, path.basename(f).replace(/\.(mjs|mts|jsx)$/, '.js'))
    const options = {
      entryPoints: [f],
      bundle: true,
      outfile,
      minify: true,
      sourcemap: true,
    }
    const c = await esbuild.context(options)
    c.opt = options
    ctxList.push(c)
  }
  for (const ctx of ctxList) {
    ctx.watch().then(()=>{
      console.log('[esbuild] watch', ctx.opt.entryPoints)
    })
  }
}