feat: user defined pollyfill's url and dependencies

README.md

@@ -38,6 +38,10 @@ When passed, downloads the dependencies and bundles them with the build. But in
 
 `debug` let's you skim through the logs during resolution and downloading pahses.
 
+### pollyfillProvider
+
+`pollyfillProvider` allow users to define their own pollyfill provider instead of `ga.jspm.io`, it can be a function `(version: string) => string` or a `string`. For function,  the parameter `version` is `es-module-shims`'s version, user should return a complete url like `https://ga.jspm.io/npm:[email protected]/dist/es-module-shims.js`.
+
 # Bundle size
 
 You can see the bundle size of [`test/basic`](https://github.com/jspm/vite-plugin-jspm/tree/main/test/basic) example in two cases:

plugin/Readme.md

@@ -38,6 +38,10 @@ When passed, downloads the dependencies and bundles them with the build. But in
 
 `debug` let's you skim through the logs during resolution and downloading pahses.
 
+### pollyfillProvider
+
+`pollyfillProvider` allow users to define their own pollyfill provider instead of `ga.jspm.io`, it can be a function `(version: string) => string` or a `string`. For function,  the parameter `version` is `es-module-shims`'s version, user should return a complete url like `https://ga.jspm.io/npm:[email protected]/dist/es-module-shims.js`.
+
 # Bundle size
 
 You can see the bundle size of [`test/basic`](https://github.com/jspm/vite-plugin-jspm/tree/main/test/basic) example in two cases:

plugin/package.json

@@ -35,7 +35,7 @@
         "@vue/compiler-dom": "^3.2.31"
     },
     "dependencies": {
-        "@jspm/generator": "1.1.1"
+        "@jspm/generator": "^1.1.1"
     },
     "peerDependencies": {
         "vite": "*"

plugin/src/index.ts

@@ -5,6 +5,7 @@ import type { HtmlTagDescriptor, Plugin } from "vite";
 type PluginOptions = GeneratorOptions & {
   downloadDeps?: boolean;
   debug?: boolean;
+  pollyfillProvider?: ((version: string) => string) | string;
 };
 
 const getDefaultOptions = (): PluginOptions => ({
@@ -182,11 +183,18 @@ async function plugin(pluginOptions?: PluginOptions): Promise<Plugin[]> {
         async transform(html) {
           resolvedDeps.clear();
           const esModuleShims = await getLatestVersionOfShims();
+          let srcUrl = `https://ga.jspm.io/npm:es-module-shims@${esModuleShims}/dist/es-module-shims.js`
+          if (options.pollyfillProvider) {
+            if (typeof options.pollyfillProvider === 'function')
+              srcUrl = options.pollyfillProvider(esModuleShims)
+            else if (typeof options.pollyfillProvider === 'string')
+              srcUrl = options.pollyfillProvider
+          }
           const tags: HtmlTagDescriptor[] = [
             {
               tag: "script",
               attrs: {
-                src: `https://ga.jspm.io/npm:es-module-shims@${esModuleShims}/dist/es-module-shims.js`,
+                src: srcUrl,
                 async: true,
               },
               injectTo: "head-prepend",