// The MFile shape and the content hash, kept free of Vite-specific APIs so
// the render worker (and the Node harnesses) can import them without
// touching import.meta.glob.

export interface MFile {
  name: string;
  source: string;
}

// Cheap content hash (FNV-1a) so the worker can key its caches on the code.
export function hashMFiles(files: MFile[]): string {
  let h = 0x811c9dc5;
  for (const f of files) {
    const s = f.name + ' ' + f.source + '';
    for (let i = 0; i < s.length; i++) {
      h ^= s.charCodeAt(i);
      h = Math.imul(h, 0x01000193);
    }
  }
  return (h >>> 0).toString(36);
}