Method pack

packages/serverless/lib/plugins/aws/dev/index.js:474–553

* Build, bundle and package the dev mode shim responsible for routing events to the local machine.. * * The method performs the following operations: * - Generates the path for the zip file based on the service's name and directory. * - Bundles and minifies the "shim.js" file using esbui

()

   * creating the zip file fails, with a specific error code for easier debugging.
   */
  async pack() {
    // Save the shim package in .serverless just like the service package
    const zipFilePath = path.join(
      this.serverless.serviceDir,
      '.serverless',
      `${this.serverless.service.service}.zip`,
    )

    logger.debug(`Packing shim file into ${zipFilePath}`)

    let shimFileContents
    try {
      /**
       * The shim.min.js file is built when the binary is built
       */
      shimFileContents = await fs.promises.readFile(
        path.join(__dirname, 'shim.min.js'),
      )
    } catch (e) {
      console.error(e)
      throw new ServerlessError(
        'Failed to build dev mode shim',
        'BUILD_SHIM_FAILED',
        { stack: false },
      )
    }

    try {
      const zip = archiver.create('zip')

      // Create the directory structure if it doesn't exist
      fs.mkdirSync(path.dirname(zipFilePath), { recursive: true })
      const output = fs.createWriteStream(zipFilePath)

      return new Promise(async (resolve, reject) => {
        output.on('close', () => {
          return resolve(zipFilePath)
        })

        output.on('error', (err) => {
          logger.debug('Output file error')
          return reject(err)
        })

        zip.on('error', (err) => {
          logger.debug('Zipper error')
          return reject(err)
        })

        output.on('open', async () => {
          zip.pipe(output)

          // Add the bundled shim file contents to the zip file
          zip.append(shimFileContents, {
            name: 'index.js', // This is the name expected by the handler. If you change this, you must change the handlers config below.
            date: new Date(0), // necessary to get the same hash when zipping the same content
          })