wip: example with rollup

examples/browser-rollup/README.md

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+<p align="center">
+  <a href="https://js.ipfs.io" title="JS IPFS">
+    <img src="https://ipfs.io/ipfs/Qme6KJdKcp85TYbLxuLV7oQzMiLremD7HMoXLZEmgo6Rnh/js-ipfs-sticker.png" alt="IPFS in JavaScript logo" width="244" />
+  </a>
+</p>
+
+<h3 align="center"><b>js-ipfs with rollup</b></h3>
+
+<p align="center">
+    <b><i>Bundle js-ipfs with Rollup!</i></b>
+    <br />
+    <br />
+    <img src="https://raw.githubusercontent.com/jlord/forkngo/gh-pages/badges/cobalt.png" width="200">
+    <br>
+    <a href="https://github.com/ipfs/js-ipfs/tree/master/docs">Explore the docs</a>
+    ·
+    <a href="https://codesandbox.io/">View Demo</a>
+    ·
+    <a href="https://github.com/ipfs-examples/js-ipfs-examples/issues">Report Bug</a>
+    ·
+    <a href="https://github.com/ipfs-examples/js-ipfs-examples/issues">Request Feature/Example</a>
+  </p>
+
+## Table of Contents
+
+- [Table of Contents](#table-of-contents)
+- [About The Project](#about-the-project)
+- [Getting Started](#getting-started)
+  - [Prerequisites](#prerequisites)
+  - [Installation and Running example](#installation-and-running-example)
+- [Usage](#usage)
+- [Documentation](#documentation)
+- [Contributing](#contributing)
+- [Want to hack on IPFS?](#want-to-hack-on-ipfs)
+
+## About The Project
+
+- Read the [docs](https://github.com/ipfs/js-ipfs/tree/master/docs)
+- Look into other [examples](https://github.com/ipfs/js-ipfs/tree/master/examples) to learn how to spawn an IPFS node in Node.js and in the Browser
+- Consult the [Core API docs](https://github.com/ipfs/js-ipfs/tree/master/docs/core-api) to see what you can do with an IPFS node
+- Visit https://dweb-primer.ipfs.io to learn about IPFS and the concepts that underpin it
+- Head over to https://proto.school to take interactive tutorials that cover core IPFS APIs
+- Check out https://docs.ipfs.io for tips, how-tos and more
+- See https://blog.ipfs.io for news and more
+- Need help? Please ask 'How do I?' questions on https://discuss.ipfs.io
+
+## Getting Started
+
+### Prerequisites
+
+Make sure you have installed all of the following prerequisites on your development machine:
+
+- Git - [Download & Install Git](https://git-scm.com/downloads). OSX and Linux machines typically have this already installed.
+- Node.js - [Download & Install Node.js](https://nodejs.org/en/download/) and the npm package manager.
+
+### Installation and Running example
+
+```console
+> npm install
+> npm start
+```
+
+Now open your browser at `http://localhost:8888`
+
+## Usage
+
+In this example, you will find a boilerplate you can use to guide yourself into bundling js-ipfs with [rollup](http://rollupjs.org/), so that you can use it in your own web app!
+
+You should see the following:
+
+![](./img/1.png)
+![](./img/2.png)
+
+This example demonstrates the `Regular API`, top-level API for add, cat, get and ls Files on IPFS
+
+_For more examples, please refer to the [Documentation](#documentation)_
+
+## Documentation
+
+- [Config](https://docs.ipfs.io/)
+- [Core API](https://github.com/ipfs/js-ipfs/tree/master/docs/core-api)
+- [Examples](https://github.com/ipfs/js-ipfs/tree/master/examples)
+- [Development](https://github.com/ipfs/js-ipfs/blob/master/docs/DEVELOPMENT.md)
+
+## Contributing
+
+Contributions are what make the open source community such an amazing place to be learn, inspire, and create. Any contributions you make are **greatly appreciated**.
+
+1. Fork the IPFS Project
+2. Create your Feature Branch (`git checkout -b feature/amazing-feature`)
+3. Commit your Changes (`git commit -a -m 'feat: add some amazing feature'`)
+4. Push to the Branch (`git push origin feature/amazing-feature`)
+5. Open a Pull Request
+
+## Want to hack on IPFS?
+
+[![](https://cdn.rawgit.com/jbenet/contribute-ipfs-gif/master/img/contribute.gif)](https://github.com/ipfs/community/blob/master/CONTRIBUTING.md)
+
+The IPFS implementation in JavaScript needs your help! There are a few things you can do right now to help out:
+
+Read the [Code of Conduct](https://github.com/ipfs/community/blob/master/code-of-conduct.md) and [JavaScript Contributing Guidelines](https://github.com/ipfs/community/blob/master/CONTRIBUTING_JS.md).
+
+- **Check out existing issues** The [issue list](https://github.com/ipfs/js-ipfs/issues) has many that are marked as ['help wanted'](https://github.com/ipfs/js-ipfs/issues?q=is%3Aissue+is%3Aopen+sort%3Aupdated-desc+label%3A%22help+wanted%22) or ['difficulty:easy'](https://github.com/ipfs/js-ipfs/issues?q=is%3Aissue+is%3Aopen+sort%3Aupdated-desc+label%3Adifficulty%3Aeasy) which make great starting points for development, many of which can be tackled with no prior IPFS knowledge
+- **Look at the [IPFS Roadmap](https://github.com/ipfs/roadmap)** This are the high priority items being worked on right now
+- **Perform code reviews** More eyes will help
+  a. speed the project along
+  b. ensure quality, and
+  c. reduce possible future bugs.
+- **Add tests**. There can never be enough tests.
+- **Join the [Weekly Core Implementations Call](https://github.com/ipfs/team-mgmt/issues/992)** it's where everyone discusses what's going on with IPFS and what's next

examples/browser-rollup/index.html

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+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>Bundle js-ipfs with rollup</title>
+
+    <link
+      rel="stylesheet"
+      href="https://unpkg.com/tachyons@4.10.0/css/tachyons.min.css"
+    />
+    <link rel="stylesheet" href="https://unpkg.com/ipfs-css@0.12.0/ipfs.css" />
+    <link rel="shortcut icon" href="./favicon.ico" />
+
+    <script src="./index.js"></script>
+    <style>
+      ::placeholder {
+        color: rgb(0 0 0 / 30%);
+      }
+
+      form {
+        margin: 1.25rem 0;
+      }
+
+      .window {
+        display: flex;
+        flex-direction: column;
+        background: #222;
+        color: #fff;
+        height: 400px;
+      }
+
+      .window .header {
+        flex-basis: 3rem;
+        background: #c6c6c6;
+        position: relative;
+      }
+
+      .window .header:after {
+        content: ". . .";
+        position: absolute;
+        left: 12px;
+        right: 0;
+        top: -3px;
+        font-family: "Times New Roman", Times, serif;
+        font-size: 96px;
+        color: #fff;
+        line-height: 0;
+        letter-spacing: -12px;
+      }
+
+      .terminal {
+        margin: 20px;
+        font-family: monospace;
+        font-size: 16px;
+        overflow: auto;
+        flex: 1;
+      }
+    </style>
+  </head>
+  <body class="montserrat f5">
+    <header class="flex items-center pa3 bg-navy bb bw3 b--aqua">
+      <a href="https://ipfs.io" title="home">
+        <img
+          alt="IPFS logo"
+          src="./public/ipfs-logo.svg"
+          style="height: 50px"
+          class="v-top"
+        />
+      </a>
+    </header>
+
+    <main class="pa4-l bg-snow mw7 mv5 center pa4">
+      <h1 class="pa0 f2 ma0 mb4 aqua tc">Add data to IPFS from the browser</h1>
+
+      <form id="add-file">
+        <label for="file-name" class="f5 ma0 pb2 aqua fw4 db">Name</label>
+        <input
+          class="input-reset bn black-80 bg-white pa3 w-100 mb3"
+          id="file-name"
+          name="file-name"
+          type="text"
+          placeholder="file.txt"
+          required
+        />
+
+        <label for="file-content" class="f5 ma0 pb2 aqua fw4 db">Content</label>
+        <input
+          class="input-reset bn black-80 bg-white pa3 w-100 mb3 ft"
+          id="file-content"
+          name="file-content"
+          type="text"
+          placeholder="Hello world"
+          required
+        />
+
+        <button
+          class="
+            button-reset
+            pv3
+            tc
+            bn
+            bg-animate bg-black-80
+            hover-bg-aqua
+            white
+            pointer
+            w-100
+          "
+          id="add-submit"
+          type="submit"
+        >
+          Add file
+        </button>
+      </form>
+
+      <h3>Output</h3>
+
+      <div class="window">
+        <div class="header"></div>
+        <div id="terminal" class="terminal"></div>
+      </div>
+    </main>
+  </body>
+</html>

examples/browser-rollup/package.json

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+{
+  "name": "example-browser-browserify",
+  "description": "Bundle js-ipfs with Browserify",
+  "version": "1.0.0",
+  "main": "dist/index.html",
+  "private": true,
+  "scripts": {
+    "clean": "rimraf ./dist",
+    "build": "rollup -c",
+    "serve": "http-server dist -a 127.0.0.1 -p 8888",
+    "start": "npm run build && npm run serve",
+    "test:example": "npm run build && playwright test tests"
+  },
+  "keywords": [],
+  "license": "MIT",
+  "devDependencies": {
+    "@playwright/test": "^1.12.3",
+    "@rollup/plugin-commonjs": "^19.0.2",
+    "@rollup/plugin-json": "^4.1.0",
+    "@rollup/plugin-node-resolve": "^13.0.4",
+    "http-server": "^0.12.3",
+    "playwright": "^1.12.3",
+    "rimraf": "^3.0.2",
+    "rollup": "^2.54.0",
+    "rollup-plugin-copy": "^3.4.0",
+    "rollup-plugin-polyfill-node": "^0.7.0",
+    "test-util-ipfs-example": "^1.0.2"
+  },
+  "dependencies": {
+    "ipfs": "^0.55.4"
+  }
+}

examples/browser-rollup/rollup.config.js

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+import { nodeResolve } from '@rollup/plugin-node-resolve';
+import nodePolyfills from 'rollup-plugin-polyfill-node';
+import commonjs from '@rollup/plugin-commonjs';
+import json from '@rollup/plugin-json';
+import copy from 'rollup-plugin-copy'
+
+const config = {
+  input: 'src/index.js',
+  output: {
+    file: 'dist/index.js',
+    format: 'esm',
+  },
+  context: 'globalThis',
+  plugins: [
+    copy({
+      targets: [
+        { src: './index.html', dest: 'dist/' },
+        { src: './favicon.ico', dest: 'dist/' },
+        { src: 'public/**/*', dest: 'dist/public/' }
+      ]
+    }),
+    nodePolyfills(),
+    nodeResolve({
+      browser: true,
+      preferBuiltins: false
+    }),
+    commonjs(),
+    json(),
+  ]
+};
+
+export default config;