Use an iife bundle for the snippet (#248)

Makefile

@@ -68,6 +68,7 @@ $(OUT): node_modules $(SRC) package.json rollup.config.js rollup.min.js rollup.n
 	@$(JSHINT) --verbose $(SRC)
 	@NODE_ENV=production $(ROLLUP) --config rollup.config.js
 	@NODE_ENV=production $(ROLLUP) --config rollup.esm.js
+	@NODE_ENV=production $(ROLLUP) --config rollup.umd.js
 	@NODE_ENV=production $(ROLLUP) --config rollup.native.js
 	@NODE_ENV=production $(ROLLUP) --config rollup.nocompat.js
 	@NODE_ENV=production $(ROLLUP) --config rollup.min.js

bower.json

@@ -1,7 +1,7 @@
 {
   "name": "amplitude-js",
   "description": "Javascript library for Amplitude Analytics",
-  "main": "amplitude.js",
+  "main": "amplitude.umd.js",
   "authors": [
     "Amplitude <[email protected]>"
   ],

package.json

@@ -1,15 +1,15 @@
 {
   "name": "amplitude-js",
   "author": "Amplitude <[email protected]>",
-  "version": "5.11.0",
+  "version": "5.12.0",
   "license": "MIT",
   "description": "Javascript library for Amplitude Analytics",
   "keywords": [
     "analytics",
     "amplitude"
   ],
   "repository": "git://github.com/amplitude/amplitude-javascript.git",
-  "main": "amplitude.js",
+  "main": "amplitude.umd.js",
   "react-native": "amplitude.native.js",
   "dependencies": {
     "@amplitude/ua-parser-js": "0.7.20",

rollup.config.js

@@ -9,7 +9,7 @@ export default {
   output: {
     name: 'amplitude',
     file: 'amplitude.js',
-    format: 'umd',
+    format: 'iife',
     amd: {
       id: 'amplitude',
     }

rollup.umd.js

@@ -0,0 +1,34 @@
+import resolve from 'rollup-plugin-node-resolve';
+import commonjs from 'rollup-plugin-commonjs';
+import replace from 'rollup-plugin-replace';
+import babel from 'rollup-plugin-babel';
+import json from 'rollup-plugin-json';
+
+export default {
+  input: 'src/index.js',
+  output: {
+    name: 'amplitude',
+    file: 'amplitude.js',
+    format: 'umd',
+    amd: {
+      id: 'amplitude',
+    }
+  },
+  plugins: [
+    json(),
+    babel({
+      exclude: 'node_modules/**',
+      plugins: ['@babel/plugin-proposal-object-rest-spread'],
+    }),
+    resolve({
+      browser: true,
+    }),
+    replace({
+      BUILD_COMPAT_SNIPPET: 'true',
+      BUILD_COMPAT_LOCAL_STORAGE: 'true',
+      BUILD_COMPAT_2_0: 'true',
+      BUILD_COMPAT_REACT_NATIVE: 'false',
+    }),
+    commonjs(),
+  ],
+};

src/amplitude-snippet.js

@@ -2,10 +2,10 @@
   var amplitude = window.amplitude || {'_q':[],'_iq':{}};
   var as = document.createElement('script');
   as.type = 'text/javascript';
-  as.integrity = 'sha384-XjqOOyFvYU+vG4+WrAuiEGo7iwlPziIAukUSiFSme/Jj5Rdk1G9Fu5iMmjxg4XRk';
+  as.integrity = 'sha384-AGAP8hLFGmWct8CISyv9W0dsAYlj/1X7y99zLRAMPI8HANfyBrMgg8CMmBs+jPsZ';
   as.crossOrigin = 'anonymous';
   as.async = true;
-  as.src = 'https://cdn.amplitude.com/libs/amplitude-5.11.0-min.gz.js';
+  as.src = 'https://cdn.amplitude.com/libs/amplitude-5.12.0-min.gz.js';
   as.onload = function() {if(!window.amplitude.runQueuedFunctions) {console.log('[Amplitude] Error: could not load SDK');}};
   var s = document.getElementsByTagName('script')[0];
   s.parentNode.insertBefore(as, s);