codies/frontend/src/hooks/useServerTime.tsx

19 lines
633 B
TypeScript

import * as React from 'react';
export interface ServerTime {
setOffset: (v: number) => void;
now: () => number;
}
const Context = React.createContext<ServerTime>(Object.seal({ setOffset: () => {}, now: Date.now }));
export const ServerTimeProvider = (props: React.PropsWithChildren<{}>) => {
const [offset, setOffset] = React.useState(0);
const value = React.useMemo(() => Object.seal({ setOffset, now: () => Date.now() + offset }), [offset, setOffset]);
return <Context.Provider value={value}>{props.children}</Context.Provider>;
};
export function useServerTime() {
return React.useContext(Context);
}