@antv/util
Version:
> AntV 底层依赖的工具库,不建议在自己业务中使用。
37 lines • 956 B
JavaScript
import isNil from './is-nil';
import isArrayLike from './is-array-like';
import getType from './get-type';
import isPrototype from './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 (isNil(value)) {
return true;
}
if (isArrayLike(value)) {
return !value.length;
}
var type = getType(value);
if (type === 'Map' || type === 'Set') {
return !value.size;
}
if (isPrototype(value)) {
return !Object.keys(value).length;
}
for (var key in value) {
if (hasOwnProperty.call(value, key)) {
return false;
}
}
return true;
}
export default isEmpty;
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