chore: migrate rollup-plugin-yaml (#36)

* chore: migrate rollup-plugin-yaml

* chore: misc metadata fixes

* chore: resolve review comments:

.npmrc

@@ -1,3 +1,3 @@
-link-workspace-packages = true
+link-workspace-packages = false
 shamefully-hoist = true
 shared-workspace-shrinkwrap = true

README.md

@@ -27,6 +27,7 @@ This repository houses plugins that Rollup considers critical to every day use o
 | [replace](packages/replace)           | Replace strings in files while bundling |
 | [strip](packages/strip)               | Remove debugger statements and functions like assert.equal and console.log from your code |
 | [wasm](packages/wasm)                 | Import WebAssembly code with Rollup |
+| [yaml](packages/yaml)                 | Convert YAML files to ES6 modules |
 |                                       |  |
 
 ## Contributing

packages/json/README.md

@@ -9,7 +9,7 @@
 
 # @rollup/plugin-json
 
-🍣 A Rollup which Converts .json files to ES6 modules.
+🍣 A Rollup plugin which Converts .json files to ES6 modules.
 
 ## Requirements
 

packages/strip/rollup.config.js

@@ -2,5 +2,8 @@ import pkg from './package.json';
 
 export default {
   input: 'src/index.js',
-  output: [{ format: 'cjs', file: pkg.main }, { format: 'esm', file: pkg.module }]
+  output: [
+    { format: 'cjs', file: pkg.main },
+    { format: 'esm', file: pkg.module }
+  ]
 };

packages/yaml/CHANGELOG.md

@@ -0,0 +1,15 @@
+# @rollup/plugin-yaml Change Log
+
+## 2.0.0
+*2019-10-18*
+
+* Add `transform` option [#6](https://github.com/rollup/rollup-plugin-yaml/pull/6) (by @CharlesHolbrow)
+* Update dependencies and build, require Node 6 [#7](https://github.com/rollup/rollup-plugin-yaml/pull/7) (by @lukastaegert)
+
+## 1.1.0
+
+* Switch to `js-yaml` for parsing [#2](https://github.com/rollup/rollup-plugin-yaml/pull/2)
+
+## 1.0.0
+
+* First release

packages/yaml/README.md

@@ -0,0 +1,91 @@
+[npm]: https://img.shields.io/npm/v/@rollup/plugin-yaml
+[npm-url]: https://www.npmjs.com/package/@rollup/plugin-yaml
+[size]: https://packagephobia.now.sh/badge?p=@rollup/plugin-yaml
+[size-url]: https://packagephobia.now.sh/result?p=@rollup/plugin-yaml
+
+[![npm][npm]][npm-url]
+[![size][size]][size-url]
+[![libera manifesto](https://img.shields.io/badge/libera-manifesto-lightgrey.svg)](https://liberamanifesto.com)
+
+# @rollup/plugin-yaml
+
+🍣 A Rollup plugin which Converts YAML files to ES6 modules.
+
+## Requirements
+
+This plugin requires an [LTS](https://github.com/nodejs/Release) Node version (v8.0.0+) and Rollup v1.20.0+.
+
+## Install
+
+Using npm:
+
+```console
+npm install @rollup/plugin-yaml --save-dev
+```
+
+## Usage
+
+Create a `rollup.config.js` [configuration file](https://www.rollupjs.org/guide/en/#configuration-files) and import the plugin:
+
+```js
+import yaml from '@rollup/plugin-yaml';
+
+export default {
+  input: 'src/index.js',
+  output: {
+    dir: 'output',
+    format: 'cjs'
+  },
+  plugins: [yaml()]
+};
+```
+
+Then call `rollup` either via the [CLI](https://www.rollupjs.org/guide/en/#command-line-reference) or the [API](https://www.rollupjs.org/guide/en/#javascript-api).
+
+With an accompanying file `src/index.js`, the local `heroes.yaml` file would now be importable as seen below:
+
+```js
+// src/index.js
+import { batman } from './heroes.yaml';
+
+console.log(`na na na na ${batman}`);
+```
+
+## Options
+
+### `exclude`
+
+Type: `String` | `Array[...String]`<br>
+Default: `null`
+
+A [minimatch pattern](https://github.com/isaacs/minimatch), or array of patterns, which specifies the files in the build the plugin should _ignore_. By default no files are ignored.
+
+### `include`
+
+Type: `String` | `Array(String)`<br>
+Default: `null`
+
+A [minimatch pattern](https://github.com/isaacs/minimatch), or array of patterns, which specifies the files in the build the plugin should operate on. By default all files are targeted.
+
+### `transform`
+
+Type: `Function`<br>
+Default: `undefined`
+
+A function which can optionally mutate parsed YAML. The function should return the mutated `object`, or `undefined` which will make no changes to the parsed YAML.
+
+```js
+yaml({
+  transform(data) {
+    if (Array.isArray(data)) {
+      return data.filter(character => !character.batman);
+    }
+  }
+});
+```
+
+## Meta
+
+[CONTRIBUTING](/.github/CONTRIBUTING.md)
+
+[LICENSE (MIT)](/LICENSE)

packages/yaml/package.json

@@ -0,0 +1,68 @@
+{
+  "name": "@rollup/plugin-yaml",
+  "version": "2.0.0",
+  "publishConfig": {
+    "access": "public"
+  },
+  "description": "Convert YAML files to ES6 modules",
+  "license": "MIT",
+  "repository": "rollup/plugins",
+  "author": "rollup",
+  "homepage": "https://github.com/rollup/plugins/packages/yaml/#readme",
+  "bugs": "https://github.com/rollup/plugins/issues",
+  "main": "dist/index.js",
+  "scripts": {
+    "build": "rollup -c",
+    "ci:coverage": "nyc pnpm run test && nyc report --reporter=text-lcov > coverage.lcov",
+    "ci:lint": "pnpm run build && pnpm run lint && pnpm run security",
+    "ci:lint:commits": "commitlint --from=${CIRCLE_BRANCH} --to=${CIRCLE_SHA1}",
+    "ci:test": "pnpm run test -- --verbose",
+    "lint": "pnpm run lint:js && pnpm run lint:docs && pnpm run lint:package",
+    "lint:docs": "prettier --single-quote --write README.md",
+    "lint:js": "eslint --fix --cache src test",
+    "lint:package": "prettier --write package.json --plugin=prettier-plugin-package",
+    "prebuild": "del-cli dist",
+    "prepare": "pnpm run build",
+    "prepublishOnly": "pnpm run lint",
+    "pretest": "pnpm run build",
+    "security": "echo 'pnpm needs `npm audit` support'",
+    "test": "ava"
+  },
+  "files": [
+    "dist",
+    "README.md",
+    "LICENSE"
+  ],
+  "keywords": [
+    "rollup",
+    "plugin",
+    "yaml"
+  ],
+  "peerDependencies": {
+    "rollup": "^1.20.0"
+  },
+  "dependencies": {
+    "js-yaml": "^3.13.1",
+    "rollup-pluginutils": "^2.8.2",
+    "tosource": "^1.0.0"
+  },
+  "devDependencies": {
+    "@babel/core": "^7.7.2",
+    "@babel/preset-env": "^7.7.1",
+    "del-cli": "^3.0.0",
+    "rollup": "^1.27.0",
+    "rollup-plugin-babel": "^4.3.3",
+    "rollup-plugin-node-resolve": "^5.2.0",
+    "source-map-support": "^0.5.16"
+  },
+  "ava": {
+    "files": [
+      "!**/fixtures/**",
+      "!**/helpers/**",
+      "!**/recipes/**",
+      "!**/types.ts"
+    ]
+  },
+  "jsnext:main": "dist/index.es.js",
+  "module": "dist/index.es.js"
+}

packages/yaml/rollup.config.js

@@ -0,0 +1,26 @@
+import babel from 'rollup-plugin-babel';
+
+import pkg from './package.json';
+
+export default {
+  input: 'src/index.js',
+  plugins: [
+    babel({
+      presets: [
+        [
+          '@babel/preset-env',
+          {
+            targets: {
+              node: 6
+            }
+          }
+        ]
+      ]
+    })
+  ],
+  external: Object.keys(pkg.dependencies),
+  output: [
+    { file: pkg.main, format: 'cjs', sourcemap: true },
+    { file: pkg.module, format: 'es', sourcemap: true }
+  ]
+};

packages/yaml/src/index.js

@@ -0,0 +1,41 @@
+import YAML from 'js-yaml';
+import toSource from 'tosource';
+import { createFilter, makeLegalIdentifier } from 'rollup-pluginutils';
+
+const ext = /\.ya?ml$/;
+
+export default function yamll(options = {}) {
+  const filter = createFilter(options.include, options.exclude);
+
+  return {
+    name: 'yaml',
+
+    transform(content, id) {
+      if (!ext.test(id)) return null;
+      if (!filter(id)) return null;
+
+      let data = YAML.load(content);
+
+      if (typeof options.transform === 'function') {
+        const result = options.transform(data);
+        // eslint-disable-next-line no-undefined
+        if (result !== undefined) {
+          data = result;
+        }
+      }
+
+      const keys = Object.keys(data).filter((key) => key === makeLegalIdentifier(key));
+
+      const code = `var data = ${toSource(data)};\n\n`;
+
+      const exports = ['export default data;']
+        .concat(keys.map((key) => `export var ${key} = data.${key};`))
+        .join('\n');
+
+      return {
+        code: code + exports,
+        map: { mappings: '' }
+      };
+    }
+  };
+}

packages/yaml/test/fixtures/.eslintrc

@@ -0,0 +1,5 @@
+{
+  "globals": {
+    "t": "readonly"
+  }
+}

packages/yaml/test/fixtures/basic/config.yaml

@@ -0,0 +1,2 @@
+answer:
+  42

packages/yaml/test/fixtures/basic/main.js

@@ -0,0 +1,3 @@
+import config from './config.yaml';
+
+t.is(config.answer, 42);

packages/yaml/test/fixtures/extensionless/config.yaml

@@ -0,0 +1,2 @@
+answer:
+  42

packages/yaml/test/fixtures/extensionless/dir/index.yaml

@@ -0,0 +1,2 @@
+Are extensionless imports and /index resolutions a good idea?:
+  No.

packages/yaml/test/fixtures/extensionless/main.js

@@ -0,0 +1,7 @@
+/* eslint-disable import/no-unresolved, import/extensions */
+
+import config from './config';
+import questions from './dir';
+
+t.is(config.answer, 42);
+t.is(questions['Are extensionless imports and /index resolutions a good idea?'], 'No.');

packages/yaml/test/fixtures/named/config.yaml

@@ -0,0 +1,2 @@
+answer:
+  42

packages/yaml/test/fixtures/named/main.js

@@ -0,0 +1,3 @@
+import { answer } from './config.yaml';
+
+t.is(answer, 42);

packages/yaml/test/fixtures/transform/array.yaml

@@ -0,0 +1,5 @@
+- name: alice
+  private: true
+- name: bob
+  private: false
+- name: carl

packages/yaml/test/fixtures/transform/main.js

@@ -0,0 +1,13 @@
+/* eslint-disable no-prototype-builtins */
+
+import array from './array.yaml';
+import object from './object.yaml';
+
+t.is(array.length, 2);
+t.is(array[0].name, 'bob');
+t.is(array[1].name, 'carl');
+
+t.is(Object.keys(object).length, 2);
+t.falsy(object.hasOwnProperty('alice'));
+t.truthy(object.hasOwnProperty('bob'));
+t.truthy(object.hasOwnProperty('carl'));

packages/yaml/test/fixtures/transform/object.yaml

@@ -0,0 +1,3 @@
+alice: { private: true }
+bob:   { private: false }
+carl:  {}

packages/yaml/test/fixtures/yml/config.yml

@@ -0,0 +1,2 @@
+answer:
+  42

packages/yaml/test/fixtures/yml/main.js

@@ -0,0 +1,3 @@
+import config from './config.yml';
+
+t.is(config.answer, 42);