RESET

引用: https://github.com/pmndrs/jotai/issues/217

const RESET: unique symbol;

可重置原子 接受的特殊值，使用 atomWithReset、atomWithDefault 或使用 atom 创建的可写原子，如果它接受 RESET 符号。

示例

import { atom } from "jotai";
import { atomWithReset, useResetAtom, RESET } from "jotai/utils";

const dollarsAtom = atomWithReset(0);
const centsAtom = atom(
  (get) => get(dollarsAtom) * 100,
  (get, set, newValue: number | typeof RESET) =>
    set(dollarsAtom, newValue === RESET ? newValue : newValue / 100)
);

const ResetExample = () => {
  const setDollars = useUpdateAtom(dollarsAtom);
  const resetCents = useResetAtom(centsAtom);

  return (
    <>
      <button onClick={() => setDollars(RESET)}>Reset dollars</button>
      <button onClick={resetCents}>Reset cents</button>
    </>
  );
};