Function parseSourceMappingUrl

valdi/vscode_debugger/src/common/sourceUtils.ts:214–251

(content: string)

}

export function parseSourceMappingUrl(content: string): string | undefined {
  if (!content) return;
  const name = 'sourceMappingURL';
  const length = content.length;
  const nameLength = name.length;

  let pos = length;
  let equalSignPos = 0;
  while (true) {
    pos = content.lastIndexOf(name, pos);
    if (pos === -1) return;
    // Check for a /\/[\/*][@#][ \t]/ regexp (length of 4) before found name.
    if (pos < 4) return;
    pos -= 4;
    if (content[pos] !== '/') continue;
    if (content[pos + 1] !== '/') continue;
    if (content[pos + 2] !== '#' && content[pos + 2] !== '@') continue;
    if (content[pos + 3] !== ' ' && content[pos + 3] !== '\t') continue;
    equalSignPos = pos + 4 + nameLength;
    if (equalSignPos < length && content[equalSignPos] !== '=') continue;
    break;
  }

  let sourceMapUrl = content.substring(equalSignPos + 1);
  const newLine = sourceMapUrl.indexOf('\n');
  if (newLine !== -1) sourceMapUrl = sourceMapUrl.substring(0, newLine);
  sourceMapUrl = sourceMapUrl.trim();
  for (let i = 0; i < sourceMapUrl.length; ++i) {
    if (
      sourceMapUrl[i] === '"' ||
      sourceMapUrl[i] === "'" ||
      sourceMapUrl[i] === ' ' ||
      sourceMapUrl[i] === '\t'
    )
      return;
  }
  return sourceMapUrl;
}

export async function checkContentHash(
  absolutePath: string,