Add global jsonrpc ref for umd bundle and fix webpack warning

.gitignore

@@ -6,4 +6,20 @@ test.js
 
 npm-debug.log
 .DS_Store
-.esm-cache
+.esm-cache
+
+# Bundle
+target
+
+# Typescript
+*.tsbuildinfo
+.tsbuildinfo
+buildcache
+.buildcache
+.rts2_cache_cjs
+.rts2_cache_es
+.rts2_cache_umd
+
+# Yarn
+yarn.lock
+yarn-error.log

.travis.yml

@@ -1,9 +1,23 @@
 language: node_js
+sudo: false
+
 node_js:
   - "6"
   - "8"
   - "10"
-sudo: false
+  - "12"
+  - "13"
+
 cache:
   directories:
     - node_modules
+
+before_install:
+  - sudo apt-get install moreutils
+
+install:
+  - yarn install
+  - yarn build
+
+script:
+  - yarn test

browser.js

@@ -0,0 +1,26 @@
+// Browser AMD Polyfill
+(function (cxt) {
+  const window = cxt.window
+  if (typeof window !== 'undefined') {
+    if (window.define) {
+      return
+    }
+    window.define = function(name, required, moduleFn) {
+      if (typeof name !== 'string') {
+        return window.define('anonymous' + Math.random(), name, required)
+      }
+      var modules = window.define.modules
+      var require = function() { throw new Error("AMD require not supported!")}
+      var exports = modules[name] = {}
+      var resolved = [require, exports]
+      for (var i = 2; i < required.length; i++) {
+        var m = modules[required[i]]
+        if (!m) throw new Error("AMD module `" + required[i] + "` not found!")
+        resolved.push(m)
+      }
+      moduleFn.apply(null, resolved)
+    }
+    window.define.modules = {}
+    window.define.amd = true
+  }
+})(this)

example/jsonrpc.js

@@ -1,6 +1,6 @@
 "use strict";
 
-const jsonrpc = require('../jsonrpc');
+const jsonrpc = require('../target/umd/jsonrpc');
 
 const requestObj = jsonrpc.request('123', 'update', {list: [1, 2, 3]});
 const notificationObj = jsonrpc.notification('update', {list: [1, 2, 3]})