Function describe

packages/zod/src/v4/core/api.ts:1696–1706

(description: string)

// @__NO_SIDE_EFFECTS__
export function describe<T>(description: string): checks.$ZodCheck<T> {
  const ch = new checks.$ZodCheck({ check: "describe" });
  ch._zod.onattach = [
    (inst) => {
      const existing = registries.globalRegistry.get(inst) ?? {};
      registries.globalRegistry.add(inst, { ...existing, description });
    },
  ];
  ch._zod.check = () => {}; // no-op check
  return ch;
}

// @__NO_SIDE_EFFECTS__
export function meta<T>(metadata: registries.GlobalMeta): checks.$ZodCheck<T> {