es-toolkit/dist/compat/_internal/isDeepKey.mjs

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

function isDeepKey(key) {
    switch (typeof key) {
        case 'number':
        case 'symbol': {
            return false;
        }
        case 'string': {
            return key.includes('.') || key.includes('[') || key.includes(']');
        }
    }
}

export { isDeepKey };