use new polyfill-library package

closes #12

README.md

@@ -30,8 +30,6 @@ or
 npm install webpack-polyfill-injector --save-dev
 ```
 
-**Please note:** Due to its dependency on `polyfill-service`, this package pulls in a lot of additional packages on installation. Furthermore, there is a heavy `postinstall` script in `polyfill-service`. The situation will improve a lot once [`polyfill-service#1267`](https://github.com/Financial-Times/polyfill-service/pull/1267) is merged and we can switch over to depend on the separate new `polyfill-library` package.
-
 
 ## Usage
 ```javascript

package.json

@@ -24,7 +24,7 @@
   },
   "dependencies": {
     "loader-utils": "^1.0.2",
-    "polyfill-service": "^3.24.0",
+    "polyfill-library": "^3.26.0-0",
     "webpack-sources": "^1.0.0"
   },
   "devDependencies": {

src/PluginState.js

@@ -70,12 +70,12 @@ function loadCache(key, cache, loader) {
 }
 
 async function loadPolyfillSource(polyfill) { // eslint-disable-line require-await
-    const file = require.resolve(`polyfill-service/polyfills/__dist/${polyfill}/raw.js`);
+    const file = require.resolve(`polyfill-library/polyfills/__dist/${polyfill}/raw.js`);
     return loadFileAsSource(file);
 }
 
 async function loadPolyfillMeta(polyfill) {
-    const file = require.resolve(`polyfill-service/polyfills/__dist/${polyfill}/meta.json`);
+    const file = require.resolve(`polyfill-library/polyfills/__dist/${polyfill}/meta.json`);
     const content = await loadFileAsString(file);
     return JSON.parse(content);
 }