Updating build process to fix issues with polyfill.

packages/string-templates/package.json

@@ -25,7 +25,6 @@
     "rollup-plugin-commonjs": "^10.1.0",
     "rollup-plugin-node-builtins": "^2.1.2",
     "rollup-plugin-node-globals": "^1.4.0",
-    "rollup-plugin-node-polyfills": "^0.2.1",
     "rollup-plugin-node-resolve": "^5.2.0",
     "typescript": "^4.1.3"
   }

packages/string-templates/rollup.config.js

@@ -1,27 +1,26 @@
 import commonjs from "rollup-plugin-commonjs"
-import globals from "rollup-plugin-node-globals"
-import builtins from "rollup-plugin-node-builtins"
-import polyfills from "rollup-plugin-node-polyfills"
 import resolve from "rollup-plugin-node-resolve"
+import builtins from "rollup-plugin-node-builtins"
+import globals from "rollup-plugin-node-globals"
 import json from "@rollup/plugin-json"
 
+const production = !process.env.ROLLUP_WATCH
+
 export default {
   input: "src/index.js",
-  output: {
-    file: "dist/bundle.js",
-    format: "umd",
-    name: "string-templates",
-    exports: "named",
-    globals: {
-      fs: "fs",
+  output: [
+    {
+      sourcemap: true,
+      format: "umd",
+      file: "./dist/bundle.js",
+      name: "string-templates",
+      exports: "named",
     },
-  },
-  treeshake: true,
-  external: ["fs"],
+  ],
   plugins: [
-    polyfills(),
     resolve({
-      preferBuiltins: false
+      preferBuiltins: true,
+      browser: true,
     }),
     commonjs(),
     globals(),