TypeScript @babel/core transformFileSync Examples

Example #1

File: babel__core-tests.ts Project: AlexGalays/DefinitelyTyped

const options: babel.TransformOptions = {
    ast: true,
    sourceMaps: true
};

babel.transform("code();", options, (err, result) => {
    const { code, map, ast } = result!;
});

const transformSyncResult = babel.transformSync("code();", options);
if (transformSyncResult) {
    const { code, map, ast } = transformSyncResult;
}

babel.transformFile("filename.js", options, (err, result) => {
    const { code, map, ast } = result!;
});

babel.transformFileSync("filename.js", options)!.code;

const sourceCode = "if (true) return;";
const parsedAst = babel.parse(sourceCode, options);

babel.transformFromAst(parsedAst!, sourceCode, options, (err, result) => {
    const { code, map, ast } = result!;
});

const transformFromAstSyncResult = babel.transformFromAstSync(parsedAst!, sourceCode, options);
const { code, map, ast } = transformFromAstSyncResult!;

Example #2

File: build.ts Project: seffalabdelaziz/botpress

export async function buildBackend(modulePath: string) {
  let babelConfig: babel.TransformOptions = {
    presets: [
      [
        '@babel/preset-env',
        {
          targets: {
            node: 'current'
          }
        }
      ],
      '@babel/preset-typescript',
      '@babel/preset-react'
    ],
    parserOpts: {
      allowReturnOutsideFunction: true
    },
    plugins: ['@babel/plugin-proposal-class-properties', '@babel/plugin-proposal-function-bind'],
    sourceType: 'module',
    cwd: modulePath
  }

  const babelFile = path.join(modulePath, 'babel.backend.js')

  if (fs.existsSync(babelFile)) {
    debug('Babel override found for backend')
    babelConfig = require(babelFile)(babelConfig)
  }

  const files = glob.sync('src/**/*.+(ts|js|jsx|tsx)', {
    cwd: modulePath,
    ignore: ['**/*.d.ts', '**/views/**/*.*', '**/config.ts']
  })

  rimraf.sync(path.join(modulePath, 'dist'))

  // Allows to copy additional files to the dist directory of the module
  const extrasFile = path.join(modulePath, 'build.extras.js')
  if (fs.existsSync(extrasFile)) {
    const extras = require(extrasFile)
    if (extras && extras.copyFiles) {
      for (const instruction of extras.copyFiles) {
        const toCopy = glob.sync(instruction, {
          cwd: modulePath
        })

        for (const file of toCopy) {
          const fromFull = path.join(modulePath, file)
          const dest = file.replace(/^src\//i, 'dist/').replace(/\.ts$/i, '.js')
          const destFull = path.join(modulePath, dest)
          mkdirp.sync(path.dirname(destFull))
          fse.copySync(fromFull, destFull)
          debug(`Copied "${file}" -> "${dest}"`)
        }
      }
    }
  }

  const outputFiles = []

  for (const file of files) {
    try {
      const dBefore = Date.now()
      const result = babel.transformFileSync(file, babelConfig)

      const dest = file.replace(/^src\//i, 'dist/').replace(/.ts$/i, '.js')
      mkdirp.sync(path.dirname(dest))
      fs.writeFileSync(dest, result.code)
      const totalTime = Date.now() - dBefore

      debug(`Generated "${dest}" (${totalTime} ms)`)

      outputFiles.push(dest)
    } catch (err) {
      error(`Error transpiling file "${file}"`) // TODO Better error
      throw err
    }
  }
}