50 lines
993 B
JavaScript
50 lines
993 B
JavaScript
/*!
|
|
* has-values <https://github.com/jonschlinkert/has-values>
|
|
*
|
|
* Copyright (c) 2014-2018, Jon Schlinkert.
|
|
* Released under the MIT License.
|
|
*/
|
|
|
|
'use strict';
|
|
|
|
const typeOf = require('kind-of');
|
|
|
|
module.exports = function has(val) {
|
|
switch (typeOf(val)) {
|
|
case 'boolean':
|
|
case 'date':
|
|
case 'function':
|
|
case 'null':
|
|
case 'number':
|
|
return true;
|
|
case 'undefined':
|
|
return false;
|
|
case 'regexp':
|
|
return val.source !== '(?:)' && val.source !== '';
|
|
case 'buffer':
|
|
return val.toString() !== '';
|
|
case 'error':
|
|
return val.message !== '';
|
|
case 'string':
|
|
case 'arguments':
|
|
return val.length !== 0;
|
|
case 'file':
|
|
case 'map':
|
|
case 'set':
|
|
return val.size !== 0;
|
|
case 'array':
|
|
case 'object':
|
|
for (const key of Object.keys(val)) {
|
|
if (has(val[key])) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
|
|
// everything else
|
|
default: {
|
|
return true;
|
|
}
|
|
}
|
|
};
|