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const path = require('path')const replace = require('@rollup/plugin-replace')const node = require('@rollup/plugin-node-resolve')const babel = require('rollup-plugin-babel')const copy = require('rollup-plugin-copy')const pckg = require('../package.json')const typescript = require('typescript')
const FILENAME = 'fuse'const VERSION = process.env.VERSION || pckg.versionconst AUTHOR = pckg.authorconst HOMEPAGE = pckg.homepageconst DESCRIPTION = pckg.description
const banner = `/** * Fuse.js v${VERSION} - ${DESCRIPTION} (${HOMEPAGE}) * * Copyright (c) ${new Date().getFullYear()} ${AUTHOR.name} (${AUTHOR.url}) * All Rights Reserved. Apache Software License 2.0 * * http://www.apache.org/licenses/LICENSE-2.0 */\n`
const resolve = (_path) => path.resolve(__dirname, '../', _path)
const FeatureFlags = {  LOGICAL_SEARCH_ENABLED: false,  EXTENDED_SEARCH_ENABLED: false}
const fullBuildFeatures = {  LOGICAL_SEARCH_ENABLED: true,  EXTENDED_SEARCH_ENABLED: true}
const builds = {  // UMD full build  'umd-dev-full': {    entry: resolve('src/entry.js'),    dest: resolve(`dist/${FILENAME}.js`),    format: 'umd',    env: 'development',    features: {      ...fullBuildFeatures    },    plugins: [      copy({        targets: [          {            src: resolve('src/index.d.ts'),            dest: resolve('dist'),            rename: `${FILENAME}.d.ts`,            transform: (content) => {              return `// Type definitions for Fuse.js v${VERSION}\n// TypeScript v${typescript.version}\n\n${content}`            }          }        ]      })    ]  },  // UMD production build  'umd-prod-full': {    entry: resolve('src/entry.js'),    dest: resolve(`dist/${FILENAME}.min.js`),    format: 'umd',    env: 'production',    features: {      ...fullBuildFeatures    }  },  // UMD basic build  'umd-dev-basic': {    entry: resolve('src/entry.js'),    dest: resolve(`dist/${FILENAME}.basic.js`),    format: 'umd',    env: 'development'  },  'umd-prod-basic': {    entry: resolve('src/entry.js'),    dest: resolve(`dist/${FILENAME}.basic.min.js`),    format: 'umd',    env: 'production'  },  // CommonJS full build  'commonjs-full': {    entry: resolve('src/entry.js'),    dest: resolve(`dist/${FILENAME}.common.js`),    env: 'development',    features: {      ...fullBuildFeatures    },    format: 'cjs'  },  // CommonJS basic build  'commonjs-basic': {    entry: resolve('src/entry.js'),    dest: resolve(`dist/${FILENAME}.basic.common.js`),    env: 'development',    format: 'cjs'  },  // ES modules build (for bundlers)  'esm-dev-full': {    entry: resolve('src/entry.js'),    dest: resolve(`dist/${FILENAME}.esm.js`),    format: 'es',    env: 'development',    features: {      ...fullBuildFeatures    },    transpile: false  },  'esm-prod-full': {    entry: resolve('src/entry.js'),    dest: resolve(`dist/${FILENAME}.esm.min.js`),    format: 'es',    env: 'production',    features: {      ...fullBuildFeatures    },    transpile: false  },  'esm-basic': {    entry: resolve('src/entry.js'),    dest: resolve(`dist/${FILENAME}.basic.esm.js`),    format: 'es',    env: 'development',    transpile: false  },  'esm-prod-basic': {    entry: resolve('src/entry.js'),    dest: resolve(`dist/${FILENAME}.basic.esm.min.js`),    format: 'es',    env: 'production',    transpile: false  }}
const defaultVars = {  __VERSION__: VERSION}
const defaultFeatures = Object.keys(FeatureFlags).reduce((map, key) => {  map[`process.env.${key}`] = FeatureFlags[key]  return map}, {})
function genConfig(options) {  // built-in vars  const vars = { ...defaultVars, ...defaultFeatures }
  const config = {    input: options.entry,    plugins: [node(), ...(options.plugins || [])],    output: {      banner,      file: options.dest,      format: options.format,      name: 'Fuse'    }  }
  // build-specific env  if (options.env) {    vars['process.env.NODE_ENV'] = JSON.stringify(options.env)  }
  // feature flags  if (options.features) {    Object.keys(options.features).forEach((key) => {      vars[`process.env.${key}`] = JSON.stringify(options.features[key])    })  }
  config.plugins.push(replace(vars))
  if (options.transpile !== false) {    config.plugins.push(babel())  }
  return config}
function mapValues(obj, fn) {  const res = {}  Object.keys(obj).forEach((key) => {    res[key] = fn(obj[key], key)  })  return res}
if (process.env.TARGET) {  module.exports = genConfig(builds[process.env.TARGET])} else {  module.exports = mapValues(builds, genConfig)}