Bit Bundler Browserpack

Common errors

• Error: Cannot find module 'bit-bundler-browserpack'

  cause The package 'bit-bundler-browserpack' is not installed in the project's node_modules.
  fix Run `npm install bit-bundler-browserpack` or `yarn add bit-bundler-browserpack` in your project directory.

• ReferenceError: myAwesomeApp is not defined

  cause The UMD bundle was loaded, but the global variable specified by the 'umd' option is not accessible, usually due to incorrect loading order or a typo in the variable name.
  fix Verify that the UMD bundle is loaded correctly in your HTML (e.g., via a <script> tag) or Node.js environment, and that the global name you're trying to access matches the 'umd' option value exactly.

• Source map error: request for https://... failed with status 404

  cause The browser or debugger cannot find the source map file, usually because it's not being served or the path in the bundle's source map URL is incorrect.
  fix Ensure your web server is configured to serve `.map` files. If source maps are inline, verify that the `sourceMap: true` option is correctly applied and the bundle is being served correctly.

• TypeError: Cannot read properties of undefined (reading 'bundle')

  cause This error typically indicates that the 'bit-bundler' instance or its configuration object is not correctly initialized or the 'bundler' array is malformed.
  fix Double-check your `new Bitbundler({...})` call. Ensure `bit-bundler` is installed and the `bundler` array correctly specifies `['bit-bundler-browserpack', {...}]` with valid options.

Warnings

• breaking Major version updates of the core bit-bundler package may introduce breaking changes that require corresponding updates or configuration adjustments in bit-bundler-browserpack.
  Fix: Always check the release notes for both bit-bundler and bit-bundler-browserpack when updating major versions. Ensure version compatibility.
• gotcha Source map generation (`sourceMap: true`) can be complex. If source maps are not working as expected, it might be due to incorrect paths, caching issues, or interactions with other build steps.
  Fix: Verify that sourceMap is enabled. Check browser developer tools for console errors related to source map loading. Ensure output paths are correct and there are no conflicting source map configurations in other tools.
• gotcha Incorrect or missing 'umd' configuration can lead to the bundled module being inaccessible or not behaving as expected in different environments (browser, Node.js, RequireJS).
  Fix: Carefully define the 'umd' option with a unique, valid global name if your bundle needs to be exposed globally. Test the bundle in all target environments (e.g., as a script tag, with `require()`).
• gotcha While direct 'browserPack' options can be passed, bit-bundler-browserpack generally computes optimal settings automatically. Overriding these directly without deep understanding can lead to unexpected bundling behavior or broken output.
  Fix: Avoid setting 'browserPack' options unless absolutely necessary. If you do, thoroughly test the output bundle across all target environments.
• breaking Version 2.0.0 likely introduced significant breaking changes in configuration or output format compared to 1.0.0, common for early major version bumps in build tools.
  Fix: When upgrading from v1.x, consult any available release notes (even if unofficial) or migration guides for changes in configuration options and expected output.
• gotcha When used with `bit-bundler`'s watch mode for incremental builds, `bit-bundler-browserpack` can occasionally encounter caching issues or not correctly reflect changes if not properly configured or if external factors interfere.
  Fix: Ensure `bit-bundler`'s caching mechanisms are understood. In case of stale builds, a full rebuild might be necessary. Check for external file watchers or build systems that might interfere.

Install

• npm install bit-bundler-browserpack npm
• yarn add bit-bundler-browserpack yarn
• pnpm add bit-bundler-browserpack pnpm

Imports

• Bundler Provider Reference
  wrong:

  import { BundlerProvider } from 'bit-bundler-browserpack';

  correct:

  bundler: ['bit-bundler-browserpack', { sourceMap: true, umd: 'myBundleName' }]

  This package is a bit-bundler plugin. It is not directly imported or required for its API. Instead, bit-bundler dynamically loads it when its package name string is specified within the bit-bundler configuration as a bundler provider.

Quickstart

Demonstrates how to configure and use bit-bundler-browserpack as the JavaScript bundler within a bit-bundler project, enabling source maps and UMD output.

import Bitbundler from 'bit-bundler';
import path from 'path';

// This example assumes 'src/index.js' and 'src/utils.js' exist.
// E.g., src/index.js: `import { greet } from './utils'; greet('World');`
// E.g., src/utils.js: `export function greet(name) { console.log(`Hello, ${name}!`); }`

async function createJavaScriptBundle() {
  const bundler = new Bitbundler({
    src: 'src/index.js', // Your application's entry point
    dest: 'dist/bundle.js', // Output bundle path
    // Specify bit-bundler-browserpack as the bundler provider
    // and pass configuration options to it.
    bundler: ['bit-bundler-browserpack', {
      sourceMap: true, // Generate inline source maps for easier debugging
      umd: 'myAwesomeApp', // Export as a UMD module accessible as 'myAwesomeApp'
      printInfo: true    // Log basic module information during bundling
    }],
    // Additional Bit-bundler configurations, e.g., for module resolution
    resolve: {
      modules: ['node_modules', 'src'] // Resolve modules from node_modules and your 'src' directory
    }
  });

  try {
    const result = await bundler.bundle();
    console.log(`Bundle successfully created at ${result.dest}`);
    // You can now use 'node dist/bundle.js' or include it in a <script> tag.
  } catch (error) {
    console.error('Failed to create bundle:', error);
    process.exit(1);
  }
}

createJavaScriptBundle();