feat: manually mirror opencoze's code from bytedance

Change-Id: I09a73aadda978ad9511264a756b2ce51f5761adf

frontend/packages/arch/pdfjs-shadow/src/generate-assets.ts

@@ -0,0 +1,55 @@
+/*
+ * Copyright 2025 coze-dev Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+ 
+import pkg from '../package.json';
+
+type AssetsType = 'cmaps' | 'pdf.worker';
+
+// 这里需要写 bnpm 已经发布的版本
+//
+const DEFAULT_VERSION = '0.1.0-alpha.x6e892414ec';
+
+/**
+ * 该方法用于生产 unpkg 环境的 worker & cmaps 链接，注意并非 pdfjs 原生方法
+ */
+export const generatePdfAssetsUrl = (assets: AssetsType) => {
+  const { name } = pkg;
+  let assetsUrl;
+  switch (assets) {
+    case 'cmaps': {
+      assetsUrl = 'lib/cmaps/';
+      break;
+    }
+    case 'pdf.worker': {
+      assetsUrl = 'lib/worker.js';
+      break;
+    }
+    default: {
+      throw new Error(
+        '目前只支持引用 cmaps 与 pdf.worker 文件，如需引用其他文件请联系 @fanwenjie.fe',
+      );
+    }
+  }
+  const onlinePkgName = name.replace(/^@/, '');
+
+  const domain =
+    REGION === 'cn'
+      ? 'lf-cdn.coze.cn/obj/unpkg'
+      : 'sf-cdn.coze.com/obj/unpkg-va';
+
+  // cp-disable-next-line
+  return `//${domain}/${onlinePkgName}/${DEFAULT_VERSION}/${assetsUrl}`;
+};

frontend/packages/arch/pdfjs-shadow/src/global.d.ts

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2025 coze-dev Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+ 
+/// <reference types='pdfjs-dist' />
+declare module 'pdfjs-dist/build/pdf.worker.mjs';
+declare module 'pdfjs-dist/build/pdf.worker.entry.js';
+declare const REGION: 'cn' | 'sg' | 'va';

frontend/packages/arch/pdfjs-shadow/src/index.ts

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2025 coze-dev Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+ 
+export {
+  getDocument,
+  type PDFDocumentProxy,
+  type PDFPageProxy,
+  type PageViewport,
+} from 'pdfjs-dist';
+
+export { type TextContent } from 'pdfjs-dist/types/src/display/text_layer';
+export { type TextItem } from 'pdfjs-dist/types/src/display/api';
+export { generatePdfAssetsUrl } from './generate-assets';
+export { initPdfJsWorker } from './init-pdfjs-dist';

frontend/packages/arch/pdfjs-shadow/src/init-pdfjs-dist.ts

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2025 coze-dev Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+ 
+import { GlobalWorkerOptions } from 'pdfjs-dist';
+
+import { generatePdfAssetsUrl } from './generate-assets';
+
+/**
+ * 该方法用于初始化 pdfjs-dist 的 workerSrc 参数，可重复调用
+ */
+export const initPdfJsWorker = () => {
+  if (!GlobalWorkerOptions.workerSrc) {
+    GlobalWorkerOptions.workerSrc = generatePdfAssetsUrl('pdf.worker');
+  }
+};