Import Pika Web

A Babel plugin for transforming imports on files to ESM imports for @pika/web.

import preact from 'preact'; // Transforms this 🚫
import preact from './web_modules/preact.js'; // Into this ✅

Installation

npm i -D @babel/core babel-plugin-import-pika-web

Usage

Add the following to .babelrc:

{
  "plugins": [
    [
      "import-pika-web",
      {
        "dir": "dist/web_modules",
        "ignore": ["jest"]
      }
    ]
  ]
}

This plugin will resolve all paths to a module relative to the web modules folder set. Also, according to the ES spec, it will also add a .js extension to any extension-less imports.

Options

Name	Default	Description
`dir`	`"web_modules"`	Location of the web modules. Should usually match the `--dest` option for @pika/web.
`ignore`	`[]`	Exact names of modules to ignore, if you find it transforming things it shouldn’t (e.g. `"react"` will match `"react"` but ignore `"react-dom"`).

Using Babel CLI

Install the Babel CLI

npm i -D @babel/cli

And add the following to package.json:

{
  "scripts": {
    "build": "npm run build:esm && npm run build:js",
    "build:esm": "pika-web --dest dist/web_modules",
    "build:js": "babel dist -d dist --ignore web_modules/*.js"
  },
  "@pika/web": {
    "webDependencies": ["preact", "preact-router"]
  }
}

Combine this with the .babelrc above, and run:

npm run build

Using webpack

No, silly! This replaces webpack! It lets the browser handle code-splitting and optimizations! Read this blog post to learn more.

Examples

TypeScript + @pika/web