forked from zhurui/management
61 lines
1.2 KiB
JavaScript
61 lines
1.2 KiB
JavaScript
/*!
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* has-values <https://github.com/jonschlinkert/has-values>
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*
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* Copyright (c) 2014-2015, 2017, Jon Schlinkert.
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* Released under the MIT License.
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*/
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'use strict';
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var typeOf = require('kind-of');
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var isNumber = require('is-number');
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module.exports = function hasValue(val) {
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// is-number checks for NaN and other edge cases
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if (isNumber(val)) {
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return true;
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}
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switch (typeOf(val)) {
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case 'null':
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case 'boolean':
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case 'function':
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return true;
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case 'string':
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case 'arguments':
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return val.length !== 0;
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case 'error':
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return val.message !== '';
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case 'array':
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var len = val.length;
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if (len === 0) {
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return false;
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}
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for (var i = 0; i < len; i++) {
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if (hasValue(val[i])) {
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return true;
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}
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}
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return false;
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case 'file':
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case 'map':
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case 'set':
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return val.size !== 0;
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case 'object':
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var keys = Object.keys(val);
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if (keys.length === 0) {
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return false;
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}
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for (var i = 0; i < keys.length; i++) {
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var key = keys[i];
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if (hasValue(val[key])) {
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return true;
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}
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}
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return false;
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default: {
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return false;
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}
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}
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};
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