es-toolkit/dist/util/invariant.mjs

A state-of-the-art, high-performance JavaScript utility library with a small bundle size and strong type annotations.

function invariant(condition, message) {
    if (condition) {
        return;
    }
    if (typeof message === 'string') {
        throw new Error(message);
    }
    throw message;
}

export { invariant };