refactor(pkg): uses typescript

.gitignore

@@ -1,4 +1,6 @@
 .DS_Store
 node_modules
 
-*.log
+*.log
+dist
+.rpt2*

.npmignore

@@ -0,0 +1 @@
+!dist

.vscode/settings.json

@@ -0,0 +1,4 @@
+{
+    "licenser.author": "MH Rohman",
+    "licenser.license": "MIT"
+}

package.json

@@ -3,56 +3,41 @@
   "description": "Convert any null value to undefined",
   "version": "1.0.0",
   "main": "dist/nullfined.js",
-  "module": "index.js",
+  "types": "types/index.d.ts",
   "license": "MIT",
   "author": {
     "name": "Roman Masyhar",
     "email": "[email protected]",
     "url": "https://github.com/rohmanhm"
   },
-  "files": [
-    "src",
-    "dist"
-  ],
   "repository": "rohmanhm/nullfined",
   "devDependencies": {
-    "ava": "^1.0.1",
-    "babel-cli": "^6.24.1",
-    "babel-eslint": "^8.0.0",
-    "babel-plugin-external-helpers": "^6.22.0",
-    "babel-preset-latest": "^6.24.1",
-    "babelrc-rollup": "^3.0.0",
-    "eslint-config-airbnb-base": "^12.0.0",
-    "eslint": "^5.0.0",
-    "eslint-plugin-import": "^2.2.0",
-    "rollup": "^0.65.0",
-    "rollup-plugin-babel": "^3.0.0",
-    "rollup-plugin-uglify": "^4.0.0",
-    "xo": "^0.22.0"
+    "ava": "^1.2.1",
+    "lodash.camelcase": "^4.3.0",
+    "rollup": "^1.2.3",
+    "rollup-plugin-babel": "^4.3.2",
+    "rollup-plugin-commonjs": "^9.2.1",
+    "rollup-plugin-node-resolve": "^4.0.1",
+    "rollup-plugin-sourcemaps": "^0.4.2",
+    "rollup-plugin-typescript2": "^0.19.2",
+    "rollup-plugin-uglify": "^6.0.2",
+    "tslint": "^5.13.0",
+    "tslint-config-standard": "^8.0.1",
+    "typescript": "^3.3.3333"
   },
   "dependencies": {
-    "vaper": "^0.0.1"
+    "vaper": "^1.0.1-0"
   },
   "scripts": {
     "build": "rollup -c",
     "watch": "rollup -c -w",
-    "test": "xo && ava"
-  },
-  "xo": {
-    "extends": "airbnb-base",
-    "plugins": [
-      "import"
-    ],
-    "rules": {
-      "unicorn/filename-case": [
-        "error",
-        {
-          "case": "camelCase"
-        }
-      ]
-    }
+    "test": "ava"
   },
   "ava": {
-    "verbose": true
+    "verbose": true,
+    "ignore": [
+      "rollup.config.js",
+      "test"
+    ]
   }
 }

rollup.config.js

@@ -1,24 +1,39 @@
-import babel from 'rollup-plugin-babel';
-import babelrc from 'babelrc-rollup'; // eslint-disable-line import/extensions
-import uglify from 'rollup-plugin-uglify';
+import resolve from 'rollup-plugin-node-resolve';
+import commonjs from 'rollup-plugin-commonjs';
+import sourceMaps from 'rollup-plugin-sourcemaps';
+import typescript from 'rollup-plugin-typescript2';
+import camelCase from 'lodash.camelcase';
+import { uglify } from 'rollup-plugin-uglify';
 
 const pkg = require('./package.json');
 
 const external = Object.keys(pkg.dependencies);
 
+const libraryName = 'nullfined';
+
 export default {
-  entry: pkg.module,
-  plugins: [
-    babel(babelrc()),
-    uglify(),
-  ],
-  external,
-  targets: [
+  input: 'src/index.ts',
+  output: [
     {
-      dest: pkg.main,
+      file: pkg.main,
+      name: camelCase(libraryName),
       format: 'umd',
-      moduleName: 'Nullfined',
-      sourceMap: true,
+      sourcemap: true,
     },
   ],
+  plugins: [
+    // Compile TypeScript files
+    typescript({ useTsconfigDeclarationDir: true }),
+    // Allow bundling cjs modules (unlike webpack, rollup doesn't understand cjs)
+    commonjs(),
+    // Allow node_modules resolution, so you can use 'external' to control
+    // which external modules to include in the bundle
+    // https://github.com/rollup/rollup-plugin-node-resolve#usage
+    resolve(),
+
+    // Resolve source maps to the original source
+    sourceMaps(),
+    uglify(),
+  ],
+  external,
 };

src/index.ts

@@ -0,0 +1,10 @@
+// Copyright (c) 2019 rohmanhm
+//
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+import vaper from 'vaper'
+
+export default function<T = any>(data: T): T {
+  return vaper(null, undefined)(data)
+}

tsconfig.json

@@ -0,0 +1,15 @@
+{
+  "compilerOptions": {
+    "target": "es5",
+    "module": "esnext",
+    "declaration": true,
+    "declarationDir": "types",
+    "esModuleInterop": true,
+    "moduleResolution": "node",
+    "sourceMap": true,
+    "baseUrl": "./src",
+    "outDir": "dist",
+    "noImplicitAny": true
+  },
+  "exclude": ["node_modules", "dist", "types"]
+}

tslint.json

@@ -0,0 +1,9 @@
+{
+  "defaultSeverity": "error",
+  "extends": ["tslint:recommended", "tslint-config-standard"],
+  "jsRules": {},
+  "rules": {
+    "interface-name": false
+  },
+  "rulesDirectory": []
+}

types/index.d.ts

@@ -0,0 +1 @@
+export default function <T = any>(data: T): T;