Convert to Parcel (#26)

.gitignore

@@ -1,14 +1,13 @@
-.*
-!.gitignore
-!.travis.yml
-!.purs-repl
-
-.spago
-bower_components
-node_modules
-output
-
-*.lock
-package-lock.json
-
-dist/app.js
+/bower_components/
+/node_modules/
+/.pulp-cache/
+/output/
+/generated-docs/
+/.psc-package/
+/.psc*
+/.purs*
+/.psa*
+/.spago
+/.cache/
+/dist/
+/prod/*

README.md

@@ -1,17 +1,32 @@
 # Halogen Template
 
-This is a template for starting a fresh project with the [Halogen](https://github.com/slamdata/purescript-halogen) library for writing declarative, type-safe user interfaces.
+### Quick Start
+```sh
+git clone https://github.com/purescript-halogen/purescript-halogen-template.git halogen-project
+cd halogen-project
+npm install
+npm run build
+npm run serve
+```
+
+### Introduction
+
+This is a template for starting a fresh project with the [Halogen](https://github.com/purescript-halogen/purescript-halogen) library for writing declarative, type-safe user interfaces.
 
 You can learn more about Halogen with these resources:
 
 - The [Halogen documentation](https://github.com/purescript-halogen/purescript-halogen/tree/master/docs), which includes a quick start guide and a concepts reference.
 - The [Learn Halogen](https://github.com/jordanmartinez/learn-halogen) learning repository.
-- The [Real World Halogen](https://github.com/thomashoneyman/purescript-halogen-realworld) application and guide.
+- The [Real World Halogen](https://github.com/thomashoneyman/purescript-halogen-realworld) application and guide. Note that the published article is written for the older halogen v4, but the code and comments cover the current halogen v5.
 - The [API documentation](https://pursuit.purescript.org/packages/purescript-halogen) on Pursuit
 
 You can chat with other Halogen users on the [PureScript Discourse](https://discourse.purescript.org), or join the [Functional Programming Slack](https://functionalprogramming.slack.com) ([invite link](https://fpchat-invite.herokuapp.com/)) in the `#purescript` and `#purescript-beginners` channels.
 
-## Getting started
+If you notice any problems with the below setup instructions, or have suggestions on how to make the new-user experience any smoother, please create an issue or pull-request.
+
+Compatible with PureScript compiler 13.x
+
+### Initial Setup
 
 **Prerequisites:** This template assumes you already have Git and Node.js installed with `npm` somewhere on your path.
 
@@ -22,15 +37,19 @@ git clone https://github.com/purescript-halogen/purescript-halogen-template.git
 cd halogen-project
 ```
 
-Then, install the PureScript compiler, the [Spago](https://github.com/purescript/spago) package manager and build tool, and [Webpack](https://github.com/webpack/webpack) bundler locally:
+Then, install the PureScript compiler, the [Spago](https://github.com/purescript/spago) package manager and build tool, and the [Parcel](https://github.com/parcel-bundler/parcel) bundler. You may either install PureScript tooling _globally_, to reduce duplicated `node_modules` across projects, or _locally_, so that each project uses specific versions of the tools.
 
-```shell
+To install the toolchain globally:
+```sh
+npm install -g purescript spago parcel
+```
+
+To install the toolchain locally (reads `devDependencies` from `package.json`):
+```sh
 npm install
 ```
 
-This will automatically trigger Spago to install the PureScript library dependencies for this project.
-
-## Building
+### Building
 
 You can now build the PureScript source code with:
 
@@ -39,19 +58,34 @@ You can now build the PureScript source code with:
 npm run build
 ```
 
-You can produce a bundled JS file you can run in the browser with:
+### Launching the App
+
+You can launch your app in the browser with:
 
 ```sh
-# An alias for `spago bundle-app --to dist/app.js`
-npm run bundle
+# An alias for `parcel dev/index.html --out-dir dev-dist --open`
+npm run serve
 ```
 
-This deposits a bundled JS file named `app.js` in the `dist` directory. You can view your running Halogen app by opening the `dist/index.html` file.
+### Development Cycle
 
-Alternatively, if you use an editor that supports `purs ide` or if you are running [`pscid`](https://github.com/kRITZCREEK/pscid), then you can get near-instant builds of the app while you work:
+If you're using an [editor](https://github.com/purescript/documentation/blob/master/ecosystem/Editor-and-tool-support.md#editors) that supports [`purs ide`](https://github.com/purescript/purescript/tree/master/psc-ide) or are running [`pscid`](https://github.com/kRITZCREEK/pscid), you simply need to keep the previous `npm run serve` command running in a terminal. Any save to a file will trigger an incremental recompilation, rebundle, and web page refresh, so you can immediately see your changes.
 
+If your workflow does not support automatic recompilation, then you will need to manually re-run `npm run build`. Even with automatic recompilation, a manual rebuild is occasionally required, such as when you add, remove, or modify module names, or notice any other unexpected behavior.
+
+### Production
+
+When you are ready to create a minified bundle for deployment, run the following command:
 ```sh
-npm run bundle:watch
+npm run build-prod
 ```
 
-:warning: `purs ide` only rebuilds one module at a time, so sometimes the bundle will end up in an inconsistent state, resulting in runtime errors. This occurs when a change is made in one module that breaks other modules that depend on it. The solution is to run a full build when a change like this is made, as the compiler will force you to resolve those errors.
+Parcel output appears in the `./dist/` directory.
+
+You can test the production output locally with a tool like [`http-server`](https://github.com/http-party/http-server#installation). It seems that `parcel` should also be able to accomplish this, but it unfortunately will only serve development builds locally.
+```sh
+npm install -g http-server
+http-server dist -o
+```
+
+If everything looks good, you can then upload the contents of `dist` to your preferred static hosting service.

dev/index.html

@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="UTF-8">
+    <title>Halogen5 Template</title>
+  </head>
+  <body>
+    <script src="./index.js"></script>
+  </body>
+</html>

dev/index.js

@@ -0,0 +1 @@
+require("../output/Main/index.js").main();

dist/index.html

@@ -1,10 +0,0 @@
-<!DOCTYPE html>
-<html xmlns="http://www.w3.org/1999/xhtml">
-  <head>
-    <meta charset="utf-8" />
-    <title>My Halogen App</title>
-  </head>
-  <body>
-    <script src="app.js"></script>
-  </body>
-</html>

entry.js

@@ -1 +0,0 @@
-require("./output/Main").main();

package.json

@@ -1,16 +1,13 @@
 {
   "private": true,
-  "scripts": {
-    "test": "spago test",
-    "build": "spago build",
-    "bundle": "spago bundle-app --to dist/app.js",
-    "bundle:watch": "webpack --mode=development --entry ./entry.js --output-path ./dist --output-filename app.js --progress --watch"
-  },
   "devDependencies": {
+    "parcel": "^1.12.4",
     "purescript": "^0.13.8",
-    "purescript-psa": "^0.7.3",
-    "spago": "^0.15.2",
-    "webpack": "^4.43.0",
-    "webpack-cli": "^3.3.11"
+    "spago": "^0.15.3"
+  },
+  "scripts": {
+    "build": "spago build",
+    "serve": "parcel dev/index.html --open",
+    "build-prod": "mkdir -p prod && cp dev/index.html prod/ && rm -rf dist && spago bundle-app --to prod/index.js && parcel build prod/index.html"
   }
-}
+}

packages.dhall

@@ -118,7 +118,7 @@ let additions =
 -}
 
 let upstream =
-      https://github.com/purescript/package-sets/releases/download/psc-0.13.6-20200507/packages.dhall sha256:9c1e8951e721b79de1de551f31ecb5a339e82bbd43300eb5ccfb1bf8cf7bbd62
+      https://github.com/purescript/package-sets/releases/download/psc-0.13.8-20200615/packages.dhall sha256:5d0cfad9408c84db0a3fdcea2d708f9ed8f64297e164dc57a7cf6328706df93a
 
 let overrides = {=}
 

spago.dhall

@@ -1,5 +1,5 @@
 { name = "halogen-project"
-, dependencies = [ "halogen", "psci-support" ]
+, dependencies = [ "console", "effect", "halogen", "psci-support" ]
 , packages = ./packages.dhall
 , sources = [ "src/**/*.purs", "test/**/*.purs" ]
 }