esbuild scripts for building packages

build.js

/* eslint-disable */
const fs = require('fs')
const path = require('path')
const esbuild = require('esbuild')
const { gzip } = require('zlib')
const { log } = console

const cwd = process.cwd()
const pkg = require(path.join(cwd, 'package.json'))

async function main() {
  if (fs.existsSync(path.join(cwd, 'dist'))) {
    fs.rmSync(path.join(cwd, 'dist'), { recursive: true }, (e) => {
      if (e) {
        throw e
      }
    })
  }

  const deps = [...Object.keys(pkg.dependencies ?? {}), ...Object.keys(pkg.peerDependencies ?? {})]

  try {
    esbuild.buildSync({
      entryPoints: [path.join(cwd, 'src/index.ts')],
      outdir: 'dist',
      minify: false,
      bundle: true,
      format: 'cjs',
      target: 'es6',
      treeShaking: true,
      tsconfig: path.join(cwd, 'tsconfig.build.json'),
      external: deps,
      metafile: true,
      sourcemap: true,
      define: {
        'process.env.NODE_ENV': '"production"',
      },
    })

    const esmResult = esbuild.buildSync({
      entryPoints: [path.join(cwd, 'src/index.ts')],
      outdir: 'dist',
      outExtension: { '.js': '.mjs' },
      minify: false,
      bundle: true,
      format: 'esm',
      target: 'es6',
      treeShaking: true,
      tsconfig: path.join(cwd, 'tsconfig.build.json'),
      external: deps,
      metafile: true,
      sourcemap: true,
      define: {
        'process.env.NODE_ENV': '"production"',
      },
    })

    const esmSize = Object.values(esmResult.metafile.outputs).reduce(
      (acc, { bytes }) => acc + bytes,
      0
    )

    fs.readFile('./dist/index.mjs', (_err, data) => {
      gzip(data, (_err, result) => {
        log(
          `✔ ${pkg.name}: Build succeeded. ${(esmSize / 1000).toFixed(1)}kb / ${(
            result.length / 1000
          ).toFixed(1)}kb gzipped`
        )
      })
    })
  } catch (e) {
    log(`x ${pkg.name}: Build failed due to an error.`)
    log(e)
  }
}

main()

dev-node.js

/* eslint-disable */
const esbuild = require('esbuild')
const fs = require('fs')
const path = require('path')
const { log } = console

const cwd = process.cwd()
const pkg = require(path.join(cwd, 'package.json'))

async function main() {
  if (fs.existsSync(path.join(cwd, 'dist'))) {
    fs.rmSync(path.join(cwd, 'dist'), { recursive: true }, (e) => {
      if (e) {
        throw e
      }
    })
  }

  const deps = [...Object.keys(pkg.dependencies ?? {}), ...Object.keys(pkg.peerDependencies ?? {})]

  try {
    await esbuild.build({
      entryPoints: ['src/index.ts'],
      outfile: 'dist/index.js',
      bundle: true,
      minify: false,
      sourcemap: true,
      incremental: true,
      platform: 'node',
      format: 'esm',
      target: 'es6',
      external: deps,
      define: {
        'process.env.NODE_ENV': '"development"',
      },
      watch: {
        onRebuild(err) {
          err ? error('❌ Failed') : log('✅ Updated')
        },
      },
    })
  } catch (err) {
    process.exit(1)
  }
}

main()

dev.js

/* eslint-disable */
const esbuild = require('esbuild')
const fs = require('fs')
const path = require('path')
const { log } = console

const cwd = process.cwd()
const pkg = require(path.join(cwd, 'package.json'))

async function main() {
  if (fs.existsSync(path.join(cwd, 'dist'))) {
    fs.rmSync(path.join(cwd, 'dist'), { recursive: true }, (e) => {
      if (e) {
        throw e
      }
    })
  }

  const deps = [...Object.keys(pkg.dependencies ?? {}), ...Object.keys(pkg.peerDependencies ?? {})]

  try {
    await esbuild.build({
      entryPoints: [path.join(cwd, 'src/index.ts')],
      outdir: 'dist',
      outExtension: { '.js': '.mjs' },
      minify: false,
      bundle: true,
      format: 'esm',
      target: 'es6',
      treeShaking: true,
      tsconfig: path.join(cwd, 'tsconfig.json'),
      external: deps,
      metafile: true,
      sourcemap: true,
      incremental: true,
      define: {
        'process.env.NODE_ENV': '"development"',
      },
      watch: {
        onRebuild(err) {
          err ? error('❌ Failed') : log('✅ Updated')
        },
      },
    })
  } catch (err) {
    process.exit(1)
  }
}

main()