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
 *
 * https://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 node from 'rollup-plugin-node-resolve';
import typescript from 'rollup-plugin-typescript2';
import uglify from 'rollup-plugin-uglify';

const PREAMBLE =
    `// @tensorflow/tfjs-models Copyright ${(new Date).getFullYear()} Google`;

function minify() {
  return uglify({output: {preamble: PREAMBLE}});
}

function config({plugins = [], output = {}}) {
  return {
    input: 'src/index.ts',
    plugins: [
      typescript({tsconfigOverride: {compilerOptions: {module: 'ES2015'}}}),
      node(), ...plugins
    ],
    output: {banner: PREAMBLE, globals: {'@tensorflow/tfjs': 'tf'}, ...output},
    external: ['@tensorflow/tfjs']
  };
}

export default [
  config(
      {output: {format: 'umd', name: 'use', file: 'dist/universal-sentence-encoder.js'}}),
  config({
    plugins: [minify()],
    output: {format: 'umd', name: 'use', file: 'dist/universal-sentence-encoder.min.js'}
  }),
  config({
    plugins: [minify()],
    output: {format: 'es', file: 'dist/universal-sentence-encoder.esm.js'}
  })
];