Added build options for umd and cjs with json support

packages/timezone-data/lib/index.js

@@ -0,0 +1,2 @@
+import timezones from './timezones.json';
+export default timezones;

packages/timezone-data/package.json

@@ -4,28 +4,44 @@
   "repository": "https://github.com/TryGhost/Ghost-SDKs/tree/master/packages/timezone-data",
   "author": "Ghost Foundation",
   "license": "MIT",
-  "main": "index.js",
+  "main": "cjs/timezone-data.js",
+  "umd:main": "umd/timezone-data.min.js",
+  "unpkg": "umd/timezone-data.min.js",
+  "module": "lib/index.js",
+  "source": "lib/index.js",
+  "files": [
+    "LICENSE",
+    "README.md",
+    "cjs/",
+    "lib/",
+    "umd/"
+  ],
   "scripts": {
     "dev": "echo \"Implement me!\"",
+    "pretest": "yarn build",
     "test": "NODE_ENV=testing mocha './test/**/*.test.js'",
+    "build": "rollup -c",
     "lint": "eslint . --ext .js --cache",
+    "prepare": "NODE_ENV=production yarn build",
     "posttest": "yarn lint"
   },
-  "files": [
-    "index.js",
-    "lib"
-  ],
   "publishConfig": {
     "access": "public"
   },
   "devDependencies": {
+    "@babel/core": "^7.2.2",
+    "@babel/preset-env": "^7.2.3",
     "mocha": "6.0.1",
+    "rollup": "^1.0.1",
+    "rollup-plugin-babel": "^4.2.0",
+    "rollup-plugin-commonjs": "^9.2.0",
+    "rollup-plugin-json": "^3.1.0",
+    "rollup-plugin-node-resolve": "^4.0.0",
+    "rollup-plugin-replace": "^2.1.0",
+    "rollup-plugin-terser": "^4.0.1",
     "should": "13.2.3",
     "sinon": "7.2.4"
   },
   "dependencies": {
-    "bluebird": "^3.5.3",
-    "ghost-ignition": "^3.0.2",
-    "lodash": "^4.17.11"
   }
 }

packages/timezone-data/rollup.config.js

@@ -0,0 +1,58 @@
+/* eslint-env node */
+import resolve from 'rollup-plugin-node-resolve';
+import babel from 'rollup-plugin-babel';
+import commonjs from 'rollup-plugin-commonjs';
+import {terser} from 'rollup-plugin-terser';
+import replace from 'rollup-plugin-replace';
+import json from 'rollup-plugin-json';
+import pkg from './package.json';
+
+const dependencies = Object.keys(pkg.dependencies);
+
+export default [
+    // Node build.
+    // No transpilation or bundling other than converstion from es modules to cjs
+    {
+        input: pkg.source,
+        output: {
+            file: pkg.main,
+            format: 'cjs',
+            interop: false
+        },
+        plugins: [
+            json(),
+            commonjs({
+                include: ['node_modules/**', '../../node_modules/**']
+            })
+        ],
+        external: dependencies
+    },
+
+    // Standalone UMD browser build (minified).
+    // Transpiles to es5 and bundles all dependencies.
+    {
+        input: pkg.source,
+        output: {
+            file: pkg['umd:main'],
+            format: 'umd',
+            name: 'GhostTimezoneData'
+        },
+        plugins: [
+            json(),
+            resolve({
+                browser: true,
+                preferBuiltins: false
+            }),
+            commonjs({
+                include: ['node_modules/**', '../../node_modules/**']
+            }),
+            babel({
+                exclude: ['node_modules/**', '../../node_modules/**']
+            }),
+            replace({
+                'process.env.NODE_ENV': `"${process.env.NODE_ENV}"`
+            }),
+            terser()
+        ]
+    }
+];