Function createTargetFilter

valdi/vscode_debugger/src/common/urlUtils.ts:415–447

(
  ...targetUrls: ReadonlyArray<string>
)

 * Creates a function to filter a target URL.
 */
export const createTargetFilter = (
  ...targetUrls: ReadonlyArray<string>
): ((testUrl: string) => boolean) => {
  const standardizeMatch = (aUrl: string) => {
    aUrl = aUrl.toLowerCase();

    const fileUrl = fileUrlToAbsolutePath(aUrl);
    if (fileUrl) {
      // Strip file:///, if present
      aUrl = fileUrl;
    } else if (isValidUrl(aUrl) && aUrl.includes('://')) {
      // Strip the protocol, if present
      aUrl = aUrl.substr(aUrl.indexOf('://') + 3);
    }

    // Remove optional trailing /
    if (aUrl.endsWith('/')) {
      aUrl = aUrl.substr(0, aUrl.length - 1);
    }

    return aUrl;
  };

  const escaped = targetUrls.map(url =>
    escapeRegexSpecialChars(standardizeMatch(url), '/*').replace(/\*/g, '.*'),
  );
  const targetUrlRegex = new RegExp('^(' + escaped.join('|') + ')$', 'g');

  return testUrl => {
    targetUrlRegex.lastIndex = 0;
    return targetUrlRegex.test(standardizeMatch(testUrl));
  };
};