@formily/shared/esm/isEmpty.js

> Formily 工具函数集

import { instOf } from './instanceof';
var has = Object.prototype.hasOwnProperty;
var toString = Object.prototype.toString;
export var isUndef = function (val) { return val === undefined; };
export var isValid = function (val) { return val !== undefined && val !== null; };
export function isEmpty(val, strict) {
    if (strict === void 0) { strict = false; }
    // Null and Undefined...
    if (val == null) {
        return true;
    }
    // Booleans...
    if (typeof val === 'boolean') {
        return false;
    }
    // Numbers...
    if (typeof val === 'number') {
        return false;
    }
    // Strings...
    if (typeof val === 'string') {
        return val.length === 0;
    }
    // Functions...
    if (typeof val === 'function') {
        return val.length === 0;
    }
    // Arrays...
    if (Array.isArray(val)) {
        if (val.length === 0) {
            return true;
        }
        for (var i = 0; i < val.length; i++) {
            if (strict) {
                if (val[i] !== undefined && val[i] !== null) {
                    return false;
                }
            }
            else {
                if (val[i] !== undefined &&
                    val[i] !== null &&
                    val[i] !== '' &&
                    val[i] !== 0) {
                    return false;
                }
            }
        }
        return true;
    }
    // Errors...
    if (instOf(val, 'Error')) {
        return val.message === '';
    }
    // Objects...
    if (val.toString === toString) {
        switch (val.toString()) {
            // Maps, Sets, Files and Errors...
            case '[object File]':
            case '[object Map]':
            case '[object Set]': {
                return val.size === 0;
            }
            // Plain objects...
            case '[object Object]': {
                for (var key in val) {
                    if (has.call(val, key)) {
                        return false;
                    }
                }
                return true;
            }
        }
    }
    // Anything else...
    return false;
}
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