rollup.config.js

/**
 * @license
 * Copyright 2019 Google LLC. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * =============================================================================
 */

import commonjs from 'rollup-plugin-commonjs';
import node from 'rollup-plugin-node-resolve';
import {terser} from 'rollup-plugin-terser';
import typescript from 'rollup-plugin-typescript2';

const PREAMBLE = `/**
 * @license
 * Copyright ${(new Date).getFullYear()} Google LLC. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * =============================================================================
 */`;

function config({plugins = [], output = {}}) {
  return {
    input: 'src/index.ts',
    plugins: [
      typescript({tsconfigOverride: {compilerOptions: {module: 'ES2015'}}}),
      node(),
      // Polyfill require() from dependencies.
      commonjs({
        ignore: ['crypto', 'node-fetch', 'util'],
        include: 'node_modules/**',
      }),
      ...plugins
    ],
    output: {
      banner: PREAMBLE,
      sourcemap: true,
      globals: {
        'node-fetch': 'nodeFetch',
        '@tensorflow/tfjs-core': 'tf',
        '@tensorflow/tfjs-converter': 'tf',
      },
      ...output,
    },
    external: [
      'crypto',
      'node-fetch',
      '@tensorflow/tfjs-core',
      '@tensorflow/tfjs-converter',
    ],
    onwarn: warning => {
      let {code} = warning;
      if (code === 'CIRCULAR_DEPENDENCY' || code === 'CIRCULAR' ||
          code === 'THIS_IS_UNDEFINED') {
        return;
      }
      console.warn('WARNING: ', warning.toString());
    }
  };
}

module.exports = cmdOptions => {
  const bundles = [];

  // Node
  bundles.push(config({
    output: {
      format: 'cjs',
      name: 'tf.automl',
      extend: true,
      file: `dist/tf-automl.node.js`,
      freeze: false
    },
    tsCompilerOptions: {target: 'es5'}
  }));

  // tf-automl.js
  bundles.push(config({
    output: {
      format: 'umd',
      name: 'tf.automl',
      extend: true,
      file: 'dist/tf-automl.js',
    }
  }));

  // tf-automl.min.js
  bundles.push(config({
    plugins: [terser({output: {preamble: PREAMBLE}})],
    output: {
      format: 'umd',
      name: 'tf.automl',
      extend: true,
      file: 'dist/tf-automl.min.js',
    }
  }));

  // tf-automl.esm.js
  bundles.push(config({
    plugins: [terser({output: {preamble: PREAMBLE}})],
    output: {
      format: 'es',
      file: 'dist/tf-automl.esm.js',
    }
  }));
  return bundles;
};