rollup-plugin-require-split-code

Enable code splitting with require().

Installation

npm install -D rollup-plugin-require-split-code

Usage

Mark the split point with // split comment:

function lazyLoadSomeModule() {
  const foo = require("./foo"); // split
  console.log(foo);
}

module.exports = lazyLoadSomeModule;

Then add the plugin to the config:

import split from "rollup-plugin-require-split-code";
import cjs from "rollup-plugin-cjs-es";

export default {
  input: ["entry.js"],
  output: {
    dir: "dist",
    format: "cjs"
  },
  plugins: [
    split(),
    cjs()
  ],
  experimentalCodeSplitting: true
};

How it works

This plugin converts require("./foo.js") into _UNWRAP_IMPORT_(import("./foo.js")) so that rollup would register "foo" as a dynamic import entry point and tries splitting "foo" into a separate file. After generating the bundle, the plugin converts _UNWRAP_IMPORT_(Promise.resolve(require("./foo.js"))) back to require("./foo.js").

Options

include

An array of glob pattern. Only matched files would be processed. If not set then process all files. Default: undefined.

exclude

An array of glob pattern. Matched files would not be processed. Default: undefined.

Changelog

• 0.2.0 (Jun 5, 2019)

  • Bump dependencies. Update rollup to 1.14.0.

• 0.1.0 (Jun 29, 2018)

  • Pulled out from rollup-plugin-cjs-es.