es-toolkit/dist/predicate/isJSONValue.mjs

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

import { isPlainObject } from './isPlainObject.mjs';

function isJSONValue(value) {
    switch (typeof value) {
        case 'object': {
            return value === null || isJSONArray(value) || isJSONObject(value);
        }
        case 'string':
        case 'number':
        case 'boolean': {
            return true;
        }
        default: {
            return false;
        }
    }
}
function isJSONArray(value) {
    if (!Array.isArray(value)) {
        return false;
    }
    return value.every(item => isJSONValue(item));
}
function isJSONObject(obj) {
    if (!isPlainObject(obj)) {
        return false;
    }
    const keys = Reflect.ownKeys(obj);
    for (let i = 0; i < keys.length; i++) {
        const key = keys[i];
        const value = obj[key];
        if (typeof key !== 'string') {
            return false;
        }
        if (!isJSONValue(value)) {
            return false;
        }
    }
    return true;
}

export { isJSONArray, isJSONObject, isJSONValue };