import { execSync } from 'child_process' import { copyFileSync, existsSync, readFileSync, writeFileSync } from 'fs' import glob from 'glob' import path from 'path' import { pathToFileURL } from 'url' /** Prepares the package for publishing. the tarball in case it will be written to disk. */ export async function preparePackage({ sourcePackageDir }: { sourcePackageDir: string }) { if (!existsSync(path.join(sourcePackageDir, 'src/index.ts'))) { throw new Error(`No src/index.ts file found in '${sourcePackageDir}'!`) } const manifest = JSON.parse(readFileSync(path.join(sourcePackageDir, 'package.json'), 'utf8')) execSync('yarn run -T lazy build', { cwd: sourcePackageDir, stdio: 'inherit' }) // save package.json and reinstate it in postpack copyFileSync( path.join(sourcePackageDir, 'package.json'), path.join(sourcePackageDir, 'package.json.bak') ) const cssFiles = glob.sync(path.join(sourcePackageDir, '*.css')) // construct the final package.json // eslint-disable-next-line no-restricted-globals const newManifest = structuredClone({ // filter out comments ...Object.fromEntries( Object.entries(manifest).filter(([key]) => !key.startsWith('/*') && key !== 'types') ), main: 'dist-cjs/index.js', module: 'dist-esm/index.mjs', source: 'src/index.ts', exports: { '.': { import: './dist-esm/index.mjs', require: './dist-cjs/index.js', }, ...Object.fromEntries( cssFiles.map((file) => [`./${path.basename(file)}`, `./${path.basename(file)}`]) ), }, files: [...(manifest.files ?? []), 'dist-esm', 'dist-cjs', 'src'], }) writeFileSync( path.join(sourcePackageDir, 'package.json'), JSON.stringify(newManifest, null, `\t`) ) // GOTCHA: Yarn's pack command seems to have a race condition where it doesn't reliably pick up // files, adding a tiny delay seems to fix it, but we make the delay extra long here just to be // safe. await new Promise((resolve) => setTimeout(resolve, 1000)) } if (import.meta.url === pathToFileURL(process.argv[1]).href) { // module was called directly ;(async () => { await preparePackage({ sourcePackageDir: path.resolve(path.normalize(process.argv[2] ?? process.cwd())), }) })() }