Add rollup to make UMD releases.

.gitignore

@@ -1,3 +1,5 @@
 node_modules
 lib
+dist
 *.log
+.rpt2_cache

README.md

@@ -36,7 +36,7 @@ Promise<WebLNProvider> (see below) that's already been `enable()`d.
 #### Example
 
 ```ts
-import { requestProvider } from 'webln/lib/client';
+import { requestProvider } from 'webln';
 
 let webln;
 try {

package.json

@@ -4,18 +4,24 @@
   "description": "Spec and tools around implementing WebLN",
   "main": "lib/index.js",
   "types": "lib/index.d.ts",
+  "unpkg": "dist/webln.js",
   "license": "MIT",
   "files": [
-    "lib"
+    "lib",
+    "dist"
   ],
   "scripts": {
-    "build": "tsc",
+    "build": "tsc && rollup -c",
     "prepublish": "npm run build"
   },
   "devDependencies": {
+    "rollup": "1.1.0",
+    "rollup-plugin-terser": "4.0.2",
+    "rollup-plugin-typescript2": "0.19.2",
     "typescript": "3.1.3"
   },
   "dependencies": {
     "@types/chrome": "0.0.74"
-  }
+  },
+  "sideEffects": false
 }

rollup.config.js

@@ -0,0 +1,36 @@
+import typescript from 'rollup-plugin-typescript2';
+import { terser } from 'rollup-plugin-terser';
+
+export default [
+  // UMD (Development)
+  {
+    input: 'src/index.ts',
+    output: {
+      file: 'dist/webln.js',
+      format: 'umd',
+      name: 'WebLN',
+    },
+    plugins: [typescript()],
+  },
+  // UMD (Production)
+  {
+    input: 'src/index.ts',
+    output: {
+      file: 'dist/webln.min.js',
+      format: 'umd',
+      name: 'WebLN',
+      indent: false,
+    },
+    plugins: [
+      typescript(),
+      terser({
+        compress: {
+          pure_getters: true,
+          unsafe: true,
+          unsafe_comps: true,
+          warnings: false,
+        },
+      }),
+    ],
+  },
+]

src/index.ts

@@ -0,0 +1,2 @@
+export * from './client';
+export * from './provider';

tsconfig.json

@@ -1,17 +1,14 @@
 {
   "compilerOptions": {
     "target": "es5",
-    "module": "commonjs",
+    "module": "esnext",
     "outDir": "lib",
     "rootDir": "src/",
     "declaration": true,
     "strict": true,
-    "allowSyntheticDefaultImports": true,
     "noUnusedLocals": true,
     "noUnusedParameters": true,
     "noImplicitAny": true,
-    "resolveJsonModule": true,
-    "esModuleInterop": true,
     "lib": ["es2017", "dom"]
   },
   "include": ["src"]