dd_xcx/node_modules/@antv/util/lib/is-empty.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var is_nil_1 = require("./is-nil");
var is_array_like_1 = require("./is-array-like");
var get_type_1 = require("./get-type");
var is_prototype_1 = require("./is-prototype");
var hasOwnProperty = Object.prototype.hasOwnProperty;
function isEmpty(value) {
    /**
     * isEmpty(null) => true
     * isEmpty() => true
     * isEmpty(true) => true
     * isEmpty(1) => true
     * isEmpty([1, 2, 3]) => false
     * isEmpty('abc') => false
     * isEmpty({ a: 1 }) => false
     */
    if (is_nil_1.default(value)) {
        return true;
    }
    if (is_array_like_1.default(value)) {
        return !value.length;
    }
    var type = get_type_1.default(value);
    if (type === 'Map' || type === 'Set') {
        return !value.size;
    }
    if (is_prototype_1.default(value)) {
        return !Object.keys(value).length;
    }
    for (var key in value) {
        if (hasOwnProperty.call(value, key)) {
            return false;
        }
    }
    return true;
}
exports.default = isEmpty;
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