feat: use webassembly-loader internally (#26)

* feat: use webassembly-loader internally

* ci: lock Rust version to 1.28.0

* test: reconfigure due to integration and lockup

♦️ rename .babelrc to babel.config.js to make babel respect node_modules/
♦️ force jest to use "module" instead of "main" in package.json when doing import/require for some packages
♦️ remove use of #[wasm_import_module] macro since Rust v1.28 not support it

* docs: update README due to loader integration

Author: DrSensor

.babelrc

@@ -5,9 +5,9 @@ rustup_nightly: &rustup_nightly
     name: Install Cargo and Rust compiler
     command: |
       echo 'export PATH="$HOME/.cargo/bin:$PATH"' >> $BASH_ENV
-      curl https://sh.rustup.rs -sSf | sh -s -- -y --default-toolchain nightly
+      curl https://sh.rustup.rs -sSf | sh -s -- -y --default-toolchain 1.28.0
       source $BASH_ENV
-      rustup target add wasm32-unknown-unknown --toolchain nightly
+      rustup target add wasm32-unknown-unknown
 
 smoke_tests: &smoke_tests
   steps:

.circleci/config.yml

@@ -8,7 +8,6 @@
 </div>
 
 [![npm][npm]][npm-url]
-[![node][node]][node-url]
 [![size][size]][size-url]
 [![npm][npm-download]][npm-url]
 [![deps][deps]][deps-url]
@@ -28,6 +27,20 @@ This is a rollup plugin that loads Rust code so it can be interop with Javascrip
 
 ## Requirements
 
+<ul>
+<li>Node v8 or later</li>
+<li>Rollup v0.64 or later</li>
+<li><details>
+<summary>Rust v1.28.0 with wasm32-uknown-unknown installed</summary>
+
+```console
+rustup default 1.28.0
+rustup target add wasm32-unknown-unknown
+```
+
+</details></li>
+</ul>
+
 This module requires a minimum of Node v8.9.0, Rollup v0.64.0, and Rust in [nightly channel][].
 
 ## Getting Started
@@ -89,17 +102,7 @@ And run `rollup` via your preferred method.
 <details>
 <summary><b><code>export</code></b></summary>
 
-- Type: `string`
-- Default: `promise`
-- Expected value:
-  - `buffer` will export wasm code as [Buffer][]
-  - `module` will export wasm code as [WebAssembly.Module][]
-  - `instance` will export wasm code as [WebAssembly.Instance][]
-  - `async` will [instantiate][webassembly.instantiate] wasm code asynchronously, return promise of both [WebAssembly.Module][] and [WebAssembly.Instance][]
-  - `async-module` will [compile][webassembly.compile] wasm code asynchronously, return promise of [WebAssembly.Module][]
-  - `async-instance` will [instantiate][webassembly.instantiate] wasm code asynchronously, return promise of [WebAssembly.Instance][]
-
-How wasm code would be exported. (see [examples](#examples))
+How wasm code would be exported. This options is identical with [option `export` in webassembly-loader][webassembly-loader]. (see [examples](#examples))
 
 ```js
 // in your rollup.config.js
@@ -333,17 +336,10 @@ wasmCompile(importObject | undefined).then(module => {
 
 [![FOSSA Status](https://app.fossa.io/api/projects/git%2Bgithub.com%2FDrSensor%2Frollup-plugin-rust.svg?type=large)](https://app.fossa.io/projects/git%2Bgithub.com%2FDrSensor%2Frollup-plugin-rust?ref=badge_large)
 
-[nightly channel]: https://rustwasm.github.io/book/game-of-life/setup.html#the-wasm32-unknown-unknown-target
-[buffer]: https://nodejs.org/api/buffer.html
-[webassembly.module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/Module
-[webassembly.instance]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/Instance
-[webassembly.instantiate]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/instantiate
-[webassembly.compile]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/compile
+[webassembly-loader]: https://github.com/DrSensor/webassembly-loader#export
 [npm]: https://img.shields.io/npm/v/rollup-plugin-rust.svg
 [npm-url]: https://npmjs.com/package/rollup-plugin-rust
 [npm-download]: https://img.shields.io/npm/dm/rollup-plugin-rust.svg
-[node]: https://img.shields.io/node/v/rollup-plugin-rust.svg
-[node-url]: https://nodejs.org
 [deps]: https://david-dm.org/DrSensor/rollup-plugin-rust.svg
 [deps-url]: https://david-dm.org/DrSensor/rollup-plugin-rust
 [tests]: https://img.shields.io/circleci/project/github/DrSensor/rollup-plugin-rust.svg

README.md

@@ -0,0 +1,18 @@
+module.exports = {
+	presets: [
+		[
+			"@babel/env",
+			{
+				targets: {node: 8},
+				modules: false
+			}
+		],
+		"@babel/flow"
+	],
+	plugins: ["@babel/proposal-export-namespace-from"],
+	env: {
+		test: {
+			presets: ["@babel/env", "@babel/flow"]
+		}
+	}
+}

babel.config.js

@@ -1,14 +1,8 @@
 module.exports = {
-	projects: [
-		{
-			displayName: "test",
-			testEnvironment: "node",
-			setupTestFrameworkScriptFile: "./jest.setup.js"
-		},
-		{
-			displayName: "lint",
-			runner: "jest-runner-eslint",
-			testMatch: ["<rootDir>/src/**/*.js"]
-		}
+	testEnvironment: "node",
+	resolver: "./script/resolveModule.js",
+	setupTestFrameworkScriptFile: "./jest.setup.js",
+	transformIgnorePatterns: [
+		"node_modules/(?!(rollup.*)|(estree.*)|(webassembly-loader)/)"
 	]
 }

jest.config.js

@@ -5,7 +5,7 @@
 	"main": "dist/index.js",
 	"typings": "index.d.ts",
 	"scripts": {
-		"build": "flow && rollup -c",
+		"build": "rollup -c",
 		"dev": "flow && rollup -c -w || true",
 		"lint": "flow && eslint --cache src test flow-typed/*.js || true",
 		"lint:fix": "eslint --fix src test flow-typed/*.js",
@@ -76,7 +76,8 @@
 		"rollup-plugin-node-resolve": "^3.3.0",
 		"rollup-plugin-prettier": "^0.4.0",
 		"rust-native-wasm-loader": "^0.8.1",
-		"standard-version": "^4.4.0"
+		"standard-version": "^4.4.0",
+		"webassembly-loader": "^1.1.0"
 	},
 	"lint-staged": {
 		"*.js": ["flow focus-check", "eslint"]

package-lock.json

@@ -37,9 +37,9 @@ export default [
 		experimentalCodeSplitting: true,
 		plugins: [
 			eslint(),
-			resolve(),
 			babel(),
 			commonjs(),
+			resolve(),
 			autoExternal(),
 			prettier(prettierrc.files("*.js"))
 		]