Restructure package files, add exports (#13530)

Co-authored-by: Sosuke Suzuki <aosukeke@gmail.com>

website/static/service-worker.js

@@ -5,13 +5,15 @@
 importScripts("lib/parsers-location.js");
 importScripts("https://unpkg.com/sw-toolbox@3.6.0/sw-toolbox.js");
 
-const parsers = Object.keys(parsersLocation).map((file) => `lib/${file}`);
+const plugins = [
+  ...new Set(Object.values(parsersLocation).map((file) => `lib/${file}`)),
+];
 
 toolbox.precache([
   // Scripts
   "lib/standalone.js",
   "lib/parsers-location.js",
-  ...parsers,
+  ...plugins,
   "playground.js",
   "https://unpkg.com/sw-toolbox@3.6.0/sw-toolbox.js",
 

website/static/worker.js

@@ -15,17 +15,16 @@ importScripts("lib/standalone.js");
 
 // this is required to only load parsers when we need them
 const parsers = Object.create(null);
-for (const file in parsersLocation) {
-  const { parsers: moduleParsers, property } = parsersLocation[file];
-  const url = `lib/${file}`;
-  for (const parserName of moduleParsers) {
-    Object.defineProperty(parsers, parserName, {
-      get() {
-        importScriptOnce(url);
-        return prettierPlugins[property].parsers[parserName];
-      },
-    });
-  }
+for (const [parser, file] of Object.entries(parsersLocation)) {
+  Object.defineProperty(parsers, parser, {
+    get() {
+      const url = `lib/${file}`;
+      importScriptOnce(url);
+      return Object.values(prettierPlugins).find((plugin) =>
+        Object.hasOwn(plugin.parsers, parser)
+      ).parsers[parser];
+    },
+  });
 }
 
 const docExplorerPlugin = {