wisdom-ui/src/utils/util.js

vue wisdom ui

function isObj(x) {
    let type = typeof x;
    return x !== null && (type === 'object' || type === 'function');
}

let hasOwnProperty = Object.prototype.hasOwnProperty;
let propIsEnumerable = Object.prototype.propertyIsEnumerable;

function toObject(val) {
    if (val === null || val === undefined) throw new TypeError('Cannot convert undefined or null to object');
    return Object(val);
}

function assignKey(to, from, key) {
    let val = from[key];
    if (val === undefined || val === null) return;
    if (hasOwnProperty.call(to, key) && (to[key] === undefined || to[key] === null))
        throw new TypeError('Cannot convert undefined or null to object (' + key + ')');
    if (!hasOwnProperty.call(to, key) || !isObj(val)) to[key] = val;
    else to[key] = assign(Object(to[key]), from[key]);
}

function assign(to, from) {
    if (to === from) return to;
    from = Object(from);
    for (let key in from) if (hasOwnProperty.call(from, key)) assignKey(to, from, key);
    if (Object.getOwnPropertySymbols) {
        let symbols = Object.getOwnPropertySymbols(from);
        for (let i = 0; i < symbols.length; i++) if (propIsEnumerable.call(from, symbols[i])) assignKey(to, from, symbols[i]);
    }
    return to;
}

export function deepAssign(target) {
    target = toObject(target);
    for (let s = 1; s < arguments.length; s++) assign(target, arguments[s]);
    return target;
}

export default {deepAssign}