Update all build, test, lint things

.babelrc

@@ -1,18 +1,17 @@
 {
   "presets": [
     [
-      "env",
+      "@babel/preset-env",
       {
         "targets": {
-          "node": 6
+          "node": 8
         }
       }
     ],
-    "flow"
+    "@babel/preset-flow"
   ],
   "plugins": [
-    "transform-class-properties",
-    "transform-object-rest-spread",
-    "transform-object-entries"
+    "@babel/plugin-proposal-class-properties",
+    "@babel/plugin-proposal-do-expressions"
   ]
 }

.eslintrc

@@ -16,6 +16,8 @@ env:
   jest: true
 
 rules:
+  one-var: off
+  prefer-const: off
   no-use-before-define:
     - error
     - functions: false

.gitignore

@@ -2,3 +2,4 @@ node_modules
 dist
 coverage
 flow-coverage
+.jest-cache

develop/index.js

@@ -5,15 +5,16 @@ import postcss from 'postcss';
 import reporter from 'postcss-reporter';
 import plugin from '../src';
 
-const read = name =>
+let from, to;
+let read = name =>
   fs.readFileSync(path.join(process.cwd(), 'test', 'fixture', name), 'utf8');
 
-const input = read('apply/input.css');
+let input = read('apply/input.css');
 
 postcss()
   .use(plugin)
   .use(reporter)
-  .process(input)
+  .process(input, { from, to })
   .then(result => {
     console.log(result.css);
   })

jest.config.js

@@ -0,0 +1,15 @@
+const isCI = require('is-ci');
+
+const config = {
+  testEnvironment: 'node',
+  cacheDirectory: '.jest-cache',
+  collectCoverageFrom: ['src/*.js'],
+};
+
+if (isCI) {
+  Object.assign(config, {
+    collectCoverage: true,
+  });
+}
+
+module.exports = config;

package.json

@@ -26,57 +26,49 @@
     "README.md",
     "UNLICENSE"
   ],
-  "engines": {
-    "node": ">=6.0.0"
-  },
+  "main": "dist/index.js",
+  "module": "dist/index.mjs",
   "scripts": {
     "lint": "eslint src/ test/",
-    "typecheck": "flow check src/",
-    "typecheck:coverage": "flow-coverage-report -t text -t html -i 'src/**/*.js'",
-    "validate": "run-s lint typecheck",
+    "validate": "run-s lint",
     "test": "jest",
-    "test:cover": "run-s 'test --coverage'",
-    "test:cover:browse": "run-s test:cover && opn coverage/lcov-report/index.html",
-    "test:ci": "run-s lint test:cover",
+    "test:ci": "run-s validate test",
     "develop": "babel-node develop/",
-    "clean": "rm -rf dist/",
-    "build:js": "babel src/ -d dist/",
-    "build": "run-s clean build:*",
-    "prepublishOnly": "run-s validate test:cover",
-    "prepare": "run-s build"
-  },
-  "jest": {
-    "testEnvironment": "node",
-    "collectCoverageFrom": [
-      "src/*.js"
-    ]
+    "prebuild": "rm -rf dist/",
+    "build": "rollup -c",
+    "prepare": "run-s build",
+    "prepublishOnly": "run-s validate test"
   },
   "dependencies": {
-    "babel-runtime": "^6.26.0",
     "balanced-match": "^1.0.0",
-    "postcss": "^7.0.2"
+    "postcss": "^7.0.14"
   },
   "devDependencies": {
-    "babel-cli": "^6.26.0",
-    "babel-eslint": "^8.2.6",
-    "babel-plugin-transform-class-properties": "^6.24.1",
-    "babel-plugin-transform-object-entries": "^1.0.0",
-    "babel-plugin-transform-object-rest-spread": "^6.26.0",
-    "babel-preset-env": "^1.7.0",
-    "babel-preset-flow": "^6.23.0",
+    "@babel/cli": "^7.2.3",
+    "@babel/core": "^7.2.2",
+    "@babel/plugin-proposal-class-properties": "^7.3.0",
+    "@babel/plugin-proposal-do-expressions": "^7.2.0",
+    "@babel/preset-env": "^7.3.1",
+    "@babel/preset-flow": "^7.0.0",
+    "babel-eslint": "^10.0.1",
     "common-tags": "^1.8.0",
-    "eslint": "^5.3.0",
-    "eslint-config-airbnb-base": "^13.0.0",
-    "eslint-config-prettier": "^2.9.0",
-    "eslint-plugin-flowtype": "^2.50.0",
-    "eslint-plugin-import": "^2.13.0",
-    "eslint-plugin-jest": "^21.20.2",
-    "flow-bin": "^0.78.0",
-    "flow-coverage-report": "^0.5.0",
-    "jest-cli": "^23.5.0",
-    "npm-run-all": "^4.1.3",
-    "opn-cli": "^3.1.0",
-    "postcss-custom-properties": "^7.0.0",
-    "postcss-reporter": "^5.0.0"
+    "eslint": "^5.12.1",
+    "eslint-config-airbnb-base": "^13.1.0",
+    "eslint-config-prettier": "^4.0.0",
+    "eslint-plugin-flowtype": "^3.2.1",
+    "eslint-plugin-import": "^2.15.0",
+    "eslint-plugin-jest": "^22.1.3",
+    "flow-bin": "^0.91.0",
+    "flow-coverage-report": "^0.6.1",
+    "jest": "^24.0.0",
+    "npm-run-all": "^4.1.5",
+    "opn-cli": "^4.0.0",
+    "postcss-custom-properties": "^8.0.9",
+    "postcss-reporter": "^6.0.1",
+    "rollup": "^1.1.2",
+    "rollup-plugin-babel": "^4.3.2",
+    "rollup-plugin-commonjs": "^9.2.0",
+    "rollup-plugin-json": "^3.1.0",
+    "rollup-plugin-node-resolve": "^4.0.0"
   }
 }

rollup.config.js

@@ -0,0 +1,28 @@
+import resolve from 'rollup-plugin-node-resolve';
+import commonjs from 'rollup-plugin-commonjs';
+import babel from 'rollup-plugin-babel';
+import json from 'rollup-plugin-json';
+import pkg from './package.json';
+
+export default {
+  plugins: [
+    babel({
+      exclude: ['node_modules/**'],
+    }),
+    json(),
+    resolve(),
+    commonjs(),
+  ],
+  external: ['postcss', 'balanced-match'],
+  input: 'src/index.js',
+  output: [
+    {
+      file: pkg.main,
+      format: 'cjs',
+    },
+    {
+      file: pkg.module,
+      format: 'esm',
+    },
+  ],
+};

src/index.js

@@ -1,9 +1,10 @@
 // @flow
 import { plugin } from 'postcss';
 import Visitor, { type Options } from './visitor';
+import { name } from '../package.json';
 
 export default plugin(
-  'postcss-apply',
+  name,
   (options: Options) => (css: Object, result: Object) => {
     const visitor = new Visitor(options);
     visitor.result = result;

test/prepend.spec.js

@@ -65,7 +65,7 @@ describe('prepend', () => {
         postcss() // eslint-disable-line no-unused-expressions
           .use(plugin({ sets }))
           .process(input, { from: undefined }).css;
-      }).toThrowError(
+      }).toThrow(
         'Unrecognized set type `function`, must be an object or string.'
       );
     });