Last change
on this file since 6a80231 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
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[6a3a178] | 1 | /*!
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| 2 | * has-values <https://github.com/jonschlinkert/has-values>
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| 3 | *
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| 4 | * Copyright (c) 2014-2015, 2017, Jon Schlinkert.
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| 5 | * Released under the MIT License.
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| 6 | */
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| 7 |
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| 8 | 'use strict';
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| 9 |
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| 10 | var typeOf = require('kind-of');
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| 11 | var isNumber = require('is-number');
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| 12 |
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| 13 | module.exports = function hasValue(val) {
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| 14 | // is-number checks for NaN and other edge cases
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| 15 | if (isNumber(val)) {
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| 16 | return true;
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| 17 | }
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| 18 |
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| 19 | switch (typeOf(val)) {
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| 20 | case 'null':
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| 21 | case 'boolean':
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| 22 | case 'function':
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| 23 | return true;
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| 24 | case 'string':
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| 25 | case 'arguments':
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| 26 | return val.length !== 0;
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| 27 | case 'error':
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| 28 | return val.message !== '';
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| 29 | case 'array':
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| 30 | var len = val.length;
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| 31 | if (len === 0) {
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| 32 | return false;
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| 33 | }
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| 34 | for (var i = 0; i < len; i++) {
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| 35 | if (hasValue(val[i])) {
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| 36 | return true;
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| 37 | }
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| 38 | }
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| 39 | return false;
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| 40 | case 'file':
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| 41 | case 'map':
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| 42 | case 'set':
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| 43 | return val.size !== 0;
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| 44 | case 'object':
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| 45 | var keys = Object.keys(val);
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| 46 | if (keys.length === 0) {
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| 47 | return false;
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| 48 | }
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| 49 | for (var i = 0; i < keys.length; i++) {
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| 50 | var key = keys[i];
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| 51 | if (hasValue(val[key])) {
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| 52 | return true;
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| 53 | }
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| 54 | }
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| 55 | return false;
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| 56 | default: {
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| 57 | return false;
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| 58 | }
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| 59 | }
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| 60 | };
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