rollup.config.mjs

import { uglify } from 'rollup-plugin-uglify'
import typescript from 'rollup-plugin-typescript2'
import replace from 'rollup-plugin-replace'
import versionInjector from 'rollup-plugin-version-injector'
import { createRequire } from 'module'

const pkg = createRequire(import.meta.url)('./package.json')
const version = process.env.VERSION || pkg.version
const sourcemap = true
const banner = `/*
 * liquidjs@${version}, https://github.com/harttle/liquidjs
 * (c) 2016-${new Date().getFullYear()} harttle
 * Released under the MIT License.
 */`
const treeshake = {
  propertyReadSideEffects: false
}
const tsconfig = (target) => ({
  check: true,
  tsconfigOverride: {
    include: ['src'],
    exclude: ['test', 'benchmark'],
    compilerOptions: {
      target,
      module: 'ES2015',
      rootDir: 'src'
    }
  }
})
const versionInjection = versionInjector({
  injectInComments: false,
  injectInTags: {
    fileRegexp: /\.(ts|js|html|css)$/,
    tagId: 'VI',
    dateFormat: 'mmmm d, yyyy HH:MM:ss'
  },
  packageJson: './package.json',
  logLevel: 'info',
  logger: console,
  exclude: []
})
const input = './src/index.ts'
const browserFS = {
  include: './src/liquid-options.ts',
  delimiters: ['', ''],
  './fs/fs-impl': './build/fs-impl-browser'
}
const browserStream = {
  include: './src/emitters/index.ts',
  delimiters: ['', ''],
  './streamed-emitter': '../build/streamed-emitter-browser'
}
const esmRequire = {
  include: './src/fs/fs-impl.ts',
  delimiters: ['', ''],
  './node-require': '../build/node-require.mjs'
}

const nodeCjs = {
  output: [{
    file: 'dist/liquid.node.js',
    format: 'cjs',
    banner
  }],
  external: ['path', 'fs', 'stream'],
  plugins: [versionInjection, typescript(tsconfig('ES2020'))],
  treeshake,
  input
}

const nodeEsm = {
  output: [{
    file: 'dist/liquid.node.mjs',
    format: 'esm',
    banner
  }],
  external: ['path', 'fs', 'stream'],
  plugins: [
    versionInjection,
    replace(esmRequire),
    typescript(tsconfig('es6'))
  ],
  treeshake,
  input
}

const browserEsm = {
  output: [{
    file: 'dist/liquid.browser.mjs',
    format: 'esm',
    banner
  }],
  external: ['path', 'fs'],
  plugins: [
    versionInjection,
    replace(browserFS),
    replace(browserStream),
    typescript(tsconfig('es6'))
  ],
  treeshake,
  input
}

const browserUmd = {
  output: [{
    file: 'dist/liquid.browser.umd.js',
    name: 'liquidjs',
    format: 'umd',
    sourcemap,
    banner
  }],
  plugins: [
    versionInjection,
    replace(browserFS),
    replace(browserStream),
    typescript(tsconfig('es5'))
  ],
  treeshake,
  input
}

const browserMin = {
  output: [{
    file: 'dist/liquid.browser.min.js',
    name: 'liquidjs',
    format: 'umd',
    sourcemap,
    banner
  }],
  plugins: [
    versionInjection,
    replace(browserFS),
    replace(browserStream),
    typescript(tsconfig('es5')),
    uglify()
  ],
  treeshake,
  input
}

const bundles = []
const env = process.env.BUNDLES || ''
if (env.includes('cjs')) bundles.push(nodeCjs)
if (env.includes('esm')) bundles.push(nodeEsm, browserEsm)
if (env.includes('umd')) bundles.push(browserUmd)
if (env.includes('min')) bundles.push(browserMin)
if (bundles.length === 0) bundles.push(nodeCjs, nodeEsm, browserEsm, browserUmd, browserMin)

export default bundles