genshin-group-verif/build.mjs at main · PaiGramTeam/genshin-group-verif · GitHub

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#!/usr/bin/env node
/**
 * Production build script — esbuild.
 *
 * Why raw esbuild instead of tsup/tsdown/unbuild?
 *   • We ship an application, not a library — no DTS, no CJS+ESM dual-format.
 *   • ReScript .res.mjs inputs need `resolveExtensions` (1 line in esbuild,
 *     plugin in wrappers).
 *   • Native addon (`better-sqlite3` via `@mtcute/node`) is external; WASM
 *     (`@mtcute/wasm`) is handled with esbuild's `loader` option.
 *   • Zero abstraction tax — ~80 LOC, no wrapper to debug.
 *
 * Usage:
 *   node build.mjs            — build to dist/
 *   node build.mjs --analyze  — also print bundle analysis
 */

import { execSync } from 'node:child_process'
import { cpSync, existsSync, mkdirSync, statSync, writeFileSync } from 'node:fs'
import { dirname, resolve } from 'node:path'
import { fileURLToPath } from 'node:url'
import * as esbuild from 'esbuild'

const root = dirname(fileURLToPath(import.meta.url))
const dist = resolve(root, 'dist')

// ── 1. ReScript → .res.mjs ───────────────────────────────────
console.log('⏳ Compiling ReScript …')
execSync('pnpm res:build', { stdio: 'inherit', cwd: root })

// ── 2. Bundle ─────────────────────────────────────────────────
console.log('⏳ Bundling with esbuild …')

const result = await esbuild.build({
    entryPoints: [resolve(root, 'src/main.ts')],
    outfile: resolve(dist, 'main.mjs'),
    bundle: true,
    platform: 'node',
    target: 'node22',
    format: 'esm',

    // Native addon used by @mtcute/node session storage — resolved at runtime
    external: ['better-sqlite3'],

    minify: true,
    treeShaking: true,
    sourcemap: true,
    sourcesContent: false,
    metafile: true,

    // ReScript outputs .res.mjs; let esbuild resolve them
    resolveExtensions: ['.ts', '.tsx', '.mjs', '.js', '.json'],

    define: { 'process.env.NODE_ENV': '"production"' },
    loader: { '.wasm': 'file' },
    assetNames: '[name]',

    // Shim `require()` for native addons in ESM context
    banner: {
        js: [
            '// genshin-group-verif production bundle',
            'import{createRequire as __cr}from"node:module";',
            'const require=__cr(import.meta.url);',
        ].join('\n'),
    },
})

// ── 3. Copy runtime data ──────────────────────────────────────
const quizDst = resolve(dist, 'bot-data/quizzes.json')
mkdirSync(dirname(quizDst), { recursive: true })
cpSync(resolve(root, 'bot-data/quizzes.json'), quizDst)

// ── 4. Report ─────────────────────────────────────────────────
writeFileSync(resolve(dist, 'metafile.json'), JSON.stringify(result.metafile))

if (process.argv.includes('--analyze')) {
    console.log('\n📊 Bundle analysis:\n')
    console.log(await esbuild.analyzeMetafile(result.metafile, { verbose: false }))
}

function kb(f) {
    const s = existsSync(f) ? statSync(f).size : 0
    return `${(s / 1024).toFixed(1)} KB`
}

console.log('\n✅ Build complete → dist/')
console.log(`   main.mjs      ${kb(resolve(dist, 'main.mjs'))}`)
console.log(`   main.mjs.map  ${kb(resolve(dist, 'main.mjs.map'))}`)
console.log('   quizzes.json  ✓')
console.log('\n   Run:  node --enable-source-maps dist/main.mjs')