Function decodeEntities

packages/core/sdk/src/artifact-preview.ts:265–277

(value: string)

 * anything that looks like markup stays inert on the way back out.
 */
const decodeEntities = (value: string): string =>
  value.replace(/&(#x?[0-9a-f]+|[a-z]+);/gi, (match, body: string) => {
    if (body.startsWith("#")) {
      const code =
        body.startsWith("#x") || body.startsWith("#X")
          ? Number.parseInt(body.slice(2), 16)
          : Number.parseInt(body.slice(1), 10);
      return Number.isFinite(code) && code > 0 && code <= 0x10_ff_ff
        ? String.fromCodePoint(code)
        : match;
    }
    return NAMED_ENTITIES[body.toLowerCase()] ?? match;
  });

const escapeText = (value: string): string =>
  decodeEntities(value).replace(/&/g, "&amp;").replace(/</g, "&lt;").replace(/>/g, "&gt;");