fix: update polyfills-loader parse5 types for v8

Assisted-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: bennypowers

packages/polyfills-loader/src/injectPolyfillsLoader.ts

@@ -1,4 +1,8 @@
-import { Document, Node, ParentNode, parse, serialize } from 'parse5';
+import type { DefaultTreeAdapterTypes } from 'parse5';
+type Document = DefaultTreeAdapterTypes.Document;
+type Node = DefaultTreeAdapterTypes.Node;
+type ParentNode = DefaultTreeAdapterTypes.ParentNode;
+import { parse, serialize } from 'parse5';
 import {
   findElements,
   getAttribute,
@@ -9,16 +13,16 @@ import {
   createElement,
   findElement,
   getTagName,
-  Element,
 } from '@web/parse5-utils';
+import type { Element } from '@web/parse5-utils';
 
-import { PolyfillsLoaderConfig, PolyfillsLoader, GeneratedFile } from './types.js';
-import { createPolyfillsLoader } from './createPolyfillsLoader.js';
-import { hasFileOfType, fileTypes } from './utils.js';
+import type { PolyfillsLoaderConfig, PolyfillsLoader, GeneratedFile } from './types.ts';
+import { createPolyfillsLoader } from './createPolyfillsLoader.ts';
+import { hasFileOfType, fileTypes } from './utils.ts';
 
 function injectImportMapPolyfill(headAst: ParentNode, originalScript: Node, type: string) {
   const systemJsScript = createScript({ type }, getTextContent(originalScript));
-  insertBefore(headAst, systemJsScript, originalScript);
+  insertBefore(headAst, systemJsScript, originalScript as any);
 }
 
 function findImportMapScripts(document: Document) {

packages/polyfills-loader/src/types.ts

@@ -1,4 +1,5 @@
-import type { Attribute } from 'parse5';
+import type { Token } from 'parse5';
+type Attribute = Token.Attribute;
 
 export interface PolyfillsLoaderConfig {
   // files to load on modern browsers. loaded when there are no

packages/polyfills-loader/src/utils.ts

@@ -1,7 +1,8 @@
-import { Element } from 'parse5';
+import type { DefaultTreeAdapterTypes } from 'parse5';
+type Element = DefaultTreeAdapterTypes.Element;
 import { getAttribute } from '@web/parse5-utils';
 import crypto from 'crypto';
-import { FileType, PolyfillsLoaderConfig } from './types.js';
+import type { FileType, PolyfillsLoaderConfig } from './types.ts';
 
 export const noModuleSupportTest = "!('noModule' in HTMLScriptElement.prototype)";