Function parseAttributes

packages/core/sdk/src/artifact-preview.ts:362–397

(source: string)

 * malformed output.
 */
const parseAttributes = (source: string): readonly (readonly [string, string])[] => {
  const attributes: (readonly [string, string])[] = [];
  let index = 0;
  while (index < source.length) {
    while (index < source.length && /\s/.test(source[index] ?? "")) index += 1;
    const nameStart = index;
    while (index < source.length && !/[\s=/>]/.test(source[index] ?? "")) index += 1;
    const name = source.slice(nameStart, index).toLowerCase();
    if (name === "") {
      index += 1;
      continue;
    }
    while (index < source.length && /\s/.test(source[index] ?? "")) index += 1;
    if (source[index] !== "=") {
      // A bare attribute (`hidden`). Valueless attributes carry no payload, so
      // the empty string is the faithful reading.
      attributes.push([name, ""]);
      continue;
    }
    index += 1;
    while (index < source.length && /\s/.test(source[index] ?? "")) index += 1;
    const quote = source[index];
    if (quote === '"' || quote === "'") {
      index += 1;
      const valueStart = index;
      while (index < source.length && source[index] !== quote) index += 1;
      attributes.push([name, source.slice(valueStart, index)]);
      index += 1;
    } else {
      const valueStart = index;
      while (index < source.length && !/[\s>]/.test(source[index] ?? "")) index += 1;
      attributes.push([name, source.slice(valueStart, index)]);
    }
  }
  return attributes;
};

const sanitizeAttributes = (tag: string, source: string): string => {
  const kept: string[] = [];