text: /// <reference types="./Coverage.d.ts" />
  /**
   * Copyright 2017 Google Inc. All rights reserved.
   *
   * 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 { assert } from "./assert.js";
  import { debugError, helper } from "./helper.js";
  import { EVALUATION_SCRIPT_URL } from "./ExecutionContext.js";
  /**
   * The Coverage class provides methods to gathers information about parts of
   * JavaScript and CSS that were used by the page.
   *
   * @remarks
   * To output coverage in a form consumable by {@link https://github.com/istanbuljs | Istanbul},
   * see {@link https://github.com/istanbuljs/puppeteer-to-istanbul | puppeteer-to-istanbul}.
   *
   * @example
   * An example of using JavaScript and CSS coverage to get percentage of initially
   * executed code:
   * ```js
   * // Enable both JavaScript and CSS coverage
   * await Promise.all([
   *   page.coverage.startJSCoverage(),
   *   page.coverage.startCSSCoverage()
   * ]);
   * // Navigate to page
   * await page.goto('https://example.com');
   * // Disable both JavaScript and CSS coverage
   * const [jsCoverage, cssCoverage] = await Promise.all([
   *   page.coverage.stopJSCoverage(),
   *   page.coverage.stopCSSCoverage(),
   * ]);
   * let totalBytes = 0;
   * let usedBytes = 0;
   * const coverage = [...jsCoverage, ...cssCoverage];
   * for (const entry of coverage) {
   *   totalBytes += entry.text.length;
   *   for (const range of entry.ranges)
   *     usedBytes += range.end - range.start - 1;
   * }
   * console.log(`Bytes used: ${usedBytes / totalBytes * 100}%`);
   * ```
   * @public
   */
  export class Coverage {
    constructor(client) {
      this._jsCoverage = new JSCoverage(client);
      this._cssCoverage = new CSSCoverage(client);
    }
    /**
       * @param options - defaults to
       * `{ resetOnNavigation : true, reportAnonymousScripts : false }`
       * @returns Promise that resolves when coverage is started.
       *
       * @remarks
       * Anonymous scripts are ones that don't have an associated url. These are
       * scripts that are dynamically created on the page using `eval` or
       * `new Function`. If `reportAnonymousScripts` is set to `true`, anonymous
       * scripts will have `__puppeteer_evaluation_script__` as their URL.
       */
    async startJSCoverage(options = {}) {
      return await this._jsCoverage.start(options);
    }
    /**
       * @returns Promise that resolves to the array of coverage reports for
       * all scripts.
       *
       * @remarks
       * JavaScript Coverage doesn't include anonymous scripts by default.
       * However, scripts with sourceURLs are reported.
       */
    async stopJSCoverage() {
      return await this._jsCoverage.stop();
    }
    /**
       * @param options - defaults to `{ resetOnNavigation : true }`
       * @returns Promise that resolves when coverage is started.
       */
    async startCSSCoverage(options = {}) {
      return await this._cssCoverage.start(options);
    }
    /**
       * @returns Promise that resolves to the array of coverage reports
       * for all stylesheets.
       * @remarks
       * CSS Coverage doesn't include dynamically injected style tags
       * without sourceURLs.
       */
    async stopCSSCoverage() {
      return await this._cssCoverage.stop();
    }
  }
  class JSCoverage {
    constructor(client) {
      this._enabled = false;
      this._scriptURLs = new Map();
      this._scriptSources = new Map();
      this._eventListeners = [];
      this._resetOnNavigation = false;
      this._reportAnonymousScripts = false;
      this._client = client;
    }
    async start(options = {}) {
      assert(!this._enabled, "JSCoverage is already enabled");
      const { resetOnNavigation = true, reportAnonymousScripts = false } =
        options;
      this._resetOnNavigation = resetOnNavigation;
      this._reportAnonymousScripts = reportAnonymousScripts;
      this._enabled = true;
      this._scriptURLs.clear();
      this._scriptSources.clear();
      this._eventListeners = [
        helper.addEventListener(
          this._client,
          "Debugger.scriptParsed",
          this._onScriptParsed.bind(this),
        ),
        helper.addEventListener(
          this._client,
          "Runtime.executionContextsCleared",
          this._onExecutionContextsCleared.bind(this),
        ),
      ];
      await Promise.all([
        this._client.send("Profiler.enable"),
        this._client.send("Profiler.startPreciseCoverage", {
          callCount: false,
          detailed: true,
        }),
        this._client.send("Debugger.enable"),
        this._client.send("Debugger.setSkipAllPauses", { skip: true }),
      ]);
    }
    _onExecutionContextsCleared() {
      if (!this._resetOnNavigation) {
        return;
      }
      this._scriptURLs.clear();
      this._scriptSources.clear();
    }
    async _onScriptParsed(event) {
      // Ignore puppeteer-injected scripts
      if (event.url === EVALUATION_SCRIPT_URL) {
        return;
      }
      // Ignore other anonymous scripts unless the reportAnonymousScripts option is true.
      if (!event.url && !this._reportAnonymousScripts) {
        return;
      }
      try {
        const response = await this._client.send("Debugger.getScriptSource", {
          scriptId: event.scriptId,
        });
        this._scriptURLs.set(event.scriptId, event.url);
        this._scriptSources.set(event.scriptId, response.scriptSource);
      } catch (error) {
        // This might happen if the page has already navigated away.
        debugError(error);
      }
    }
    async stop() {
      assert(this._enabled, "JSCoverage is not enabled");
      this._enabled = false;
      const result = await Promise.all([
        this._client.send("Profiler.takePreciseCoverage"),
        this._client.send("Profiler.stopPreciseCoverage"),
        this._client.send("Profiler.disable"),
        this._client.send("Debugger.disable"),
      ]);
      helper.removeEventListeners(this._eventListeners);
      const coverage = [];
      const profileResponse = result[0];
      for (const entry of profileResponse.result) {
        let url = this._scriptURLs.get(entry.scriptId);
        if (!url && this._reportAnonymousScripts) {
          url = "debugger://VM" + entry.scriptId;
        }
        const text = this._scriptSources.get(entry.scriptId);
        if (text === undefined || url === undefined) {
          continue;
        }
        const flattenRanges = [];
        for (const func of entry.functions) {
          flattenRanges.push(...func.ranges);
        }
        const ranges = convertToDisjointRanges(flattenRanges);
        coverage.push({ url, ranges, text });
      }
      return coverage;
    }
  }
  class CSSCoverage {
    constructor(client) {
      this._enabled = false;
      this._stylesheetURLs = new Map();
      this._stylesheetSources = new Map();
      this._eventListeners = [];
      this._resetOnNavigation = false;
      this._reportAnonymousScripts = false;
      this._client = client;
    }
    async start(options = {}) {
      assert(!this._enabled, "CSSCoverage is already enabled");
      const { resetOnNavigation = true } = options;
      this._resetOnNavigation = resetOnNavigation;
      this._enabled = true;
      this._stylesheetURLs.clear();
      this._stylesheetSources.clear();
      this._eventListeners = [
        helper.addEventListener(
          this._client,
          "CSS.styleSheetAdded",
          this._onStyleSheet.bind(this),
        ),
        helper.addEventListener(
          this._client,
          "Runtime.executionContextsCleared",
          this._onExecutionContextsCleared.bind(this),
        ),
      ];
      await Promise.all([
        this._client.send("DOM.enable"),
        this._client.send("CSS.enable"),
        this._client.send("CSS.startRuleUsageTracking"),
      ]);
    }
    _onExecutionContextsCleared() {
      if (!this._resetOnNavigation) {
        return;
      }
      this._stylesheetURLs.clear();
      this._stylesheetSources.clear();
    }
    async _onStyleSheet(event) {
      const header = event.header;
      // Ignore anonymous scripts
      if (!header.sourceURL) {
        return;
      }
      try {
        const response = await this._client.send("CSS.getStyleSheetText", {
          styleSheetId: header.styleSheetId,
        });
        this._stylesheetURLs.set(header.styleSheetId, header.sourceURL);
        this._stylesheetSources.set(header.styleSheetId, response.text);
      } catch (error) {
        // This might happen if the page has already navigated away.
        debugError(error);
      }
    }
    async stop() {
      assert(this._enabled, "CSSCoverage is not enabled");
      this._enabled = false;
      const ruleTrackingResponse = await this._client.send(
        "CSS.stopRuleUsageTracking",
      );
      await Promise.all([
        this._client.send("CSS.disable"),
        this._client.send("DOM.disable"),
      ]);
      helper.removeEventListeners(this._eventListeners);
      // aggregate by styleSheetId
      const styleSheetIdToCoverage = new Map();
      for (const entry of ruleTrackingResponse.ruleUsage) {
        let ranges = styleSheetIdToCoverage.get(entry.styleSheetId);
        if (!ranges) {
          ranges = [];
          styleSheetIdToCoverage.set(entry.styleSheetId, ranges);
        }
        ranges.push({
          startOffset: entry.startOffset,
          endOffset: entry.endOffset,
          count: entry.used ? 1 : 0,
        });
      }
      const coverage = [];
      for (const styleSheetId of this._stylesheetURLs.keys()) {
        const url = this._stylesheetURLs.get(styleSheetId);
        const text = this._stylesheetSources.get(styleSheetId);
        const ranges = convertToDisjointRanges(
          styleSheetIdToCoverage.get(styleSheetId) || [],
        );
        coverage.push({ url, ranges, text });
      }
      return coverage;
    }
  }
  function convertToDisjointRanges(nestedRanges) {
    const points = [];
    for (const range of nestedRanges) {
      points.push({ offset: range.startOffset, type: 0, range });
      points.push({ offset: range.endOffset, type: 1, range });
    }
    // Sort points to form a valid parenthesis sequence.
    points.sort((a, b) => {
      // Sort with increasing offsets.
      if (a.offset !== b.offset) {
        return a.offset - b.offset;
      }
      // All "end" points should go before "start" points.
      if (a.type !== b.type) {
        return b.type - a.type;
      }
      const aLength = a.range.endOffset - a.range.startOffset;
      const bLength = b.range.endOffset - b.range.startOffset;
      // For two "start" points, the one with longer range goes first.
      if (a.type === 0) {
        return bLength - aLength;
      }
      // For two "end" points, the one with shorter range goes first.
      return aLength - bLength;
    });
    const hitCountStack = [];
    const results = [];
    let lastOffset = 0;
    // Run scanning line to intersect all ranges.
    for (const point of points) {
      if (
        hitCountStack.length &&
        lastOffset < point.offset &&
        hitCountStack[hitCountStack.length - 1] > 0
      ) {
        const lastResult = results.length ? results[results.length - 1] : null;
        if (lastResult && lastResult.end === lastOffset) {
          lastResult.end = point.offset;
        } else {
          results.push({ start: lastOffset, end: point.offset });
        }
      }
      lastOffset = point.offset;
      if (point.type === 0) {
        hitCountStack.push(point.range.count);
      } else {
        hitCountStack.pop();
      }
    }
    // Filter out empty ranges.
    return results.filter((range) => range.end - range.start > 1);
  }
  