text: /* Copyright 2017 Mozilla Foundation
   *
   * 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.
   */
  /* globals __non_webpack_require__ */
  
  // modified by ngx-extended-pdf-viewer - removed node.js support
  // import { isNodeJS } from "./is_node.js";
  
  const isNodeJS = false;
  
  // Skip compatibility checks for modern builds and if we already ran the module.
  if (
    (typeof PDFJSDev === "undefined" || !PDFJSDev.test("SKIP_BABEL")) &&
    !globalThis._pdfjsCompatibilityChecked
  ) {
    globalThis._pdfjsCompatibilityChecked = true;
  
    // Support: Node.js
    (function checkNodeBtoa() {
      if (globalThis.btoa || !isNodeJS) {
        return;
      }
      globalThis.btoa = function (chars) {
        // eslint-disable-next-line no-undef
        return Buffer.from(chars, "binary").toString("base64");
      };
    })();
  
    // Support: Node.js
    (function checkNodeAtob() {
      if (globalThis.atob || !isNodeJS) {
        return;
      }
      globalThis.atob = function (input) {
        // eslint-disable-next-line no-undef
        return Buffer.from(input, "base64").toString("binary");
      };
    })();
  
    // Support: Node.js
    (function checkDOMMatrix() {
      if (globalThis.DOMMatrix || !isNodeJS) {
        return;
      }
      globalThis.DOMMatrix = __non_webpack_require__(
        "dommatrix/dist/dommatrix.js"
      );
    })();
  
    // Provides support for *recent* additions to the Promise specification,
    // however basic Promise support is assumed to be available natively.
    // Support: Firefox<71, Chrome<76, Safari<13, Node.js<12.9.0
    (function checkPromise() {
      if (typeof PDFJSDev !== "undefined" && PDFJSDev.test("IMAGE_DECODERS")) {
        // The current image decoders are synchronous, hence `Promise` shouldn't
        // need to be polyfilled for the IMAGE_DECODERS build target.
        return;
      }
      if (globalThis.Promise.allSettled) {
        return;
      }
      globalThis.Promise = require("core-js/es/promise/index.js");
    })();
  
    // Support: Node.js
    (function checkReadableStream() {
      if (globalThis.ReadableStream || !isNodeJS) {
        return;
      }
      globalThis.ReadableStream = __non_webpack_require__(
        "web-streams-polyfill/dist/ponyfill.js"
      ).ReadableStream;
    })();
  
    // Support: Firefox<94, Chrome<98, Safari<15.4, Node.js<17.0.0
    (function checkStructuredClone() {
      if (typeof PDFJSDev !== "undefined" && PDFJSDev.test("IMAGE_DECODERS")) {
        // The current image decoders are synchronous, hence `structuredClone`
        // shouldn't need to be polyfilled for the IMAGE_DECODERS build target.
        return;
      }
      if (globalThis.structuredClone) {
        return;
      }
      require("core-js/web/structured-clone.js");
    })();
  }
  