Refactor development (#58)

Author: cuth

.editorconfig

@@ -3,14 +3,9 @@ root = true
 
 [*]
 indent_style = space
-indent_size = 4
-end_of_line = lf
-charset = utf-8
+indent_size = 2
 trim_trailing_whitespace = true
 insert_final_newline = true
 
 [*.md]
 trim_trailing_whitespace = false
-
-[*.json]
-indent_size = 2

.eslintrc.js

@@ -0,0 +1,18 @@
+module.exports = {
+  env: {
+    commonjs: true,
+    es6: true,
+    node: true
+  },
+  extends: "eslint:recommended",
+  globals: {
+    Atomics: "readonly",
+    SharedArrayBuffer: "readonly"
+  },
+  parserOptions: {
+    ecmaVersion: 2018
+  },
+  rules: {
+    "no-console": 1
+  }
+};

.github/workflows/ci.yaml

@@ -0,0 +1,23 @@
+name: Node.js CI
+
+on: [push]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [8.x, 10.x, 12.x]
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node-version }}
+      - run: npm install
+      - run: npm run lint
+      - run: npm test
+        env:
+          CI: true

.jshintrc

@@ -0,0 +1,4 @@
+{
+  "tabWidth": 2,
+  "useTabs": false
+}

.prettierrc

@@ -0,0 +1,5 @@
+module.exports = {
+  rules: {
+    "no-console": 0
+  }
+};

example/.eslintrc.js

@@ -1,17 +1,18 @@
-'use strict';
+"use strict";
 
-var fs = require('fs');
-var postcss = require('postcss');
-var pxtorem = require('..');
-var css = fs.readFileSync('main.css', 'utf8');
-var options = {
-    replace: false
+const fs = require("fs");
+const postcss = require("postcss");
+const pxtorem = require("..");
+
+const css = fs.readFileSync("main.css", "utf8");
+const options = {
+  replace: false
 };
-var processedCss = postcss(pxtorem(options)).process(css).css;
+const processedCss = postcss(pxtorem(options)).process(css).css;
 
-fs.writeFile('main-rem.css', processedCss, function (err) {
+fs.writeFile("main-rem.css", processedCss, function(err) {
   if (err) {
     throw err;
   }
-  console.log('Rem file written.');
-});
+  console.log("Rem file written.");
+});