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39 lines
1.1 KiB
TypeScript
39 lines
1.1 KiB
TypeScript
// Loaded from https://deno.land/x/ramda@v0.27.2/source/internal/_isArrayLike.js
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import _curry1 from './_curry1.js';
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import _isArray from './_isArray.js';
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import _isString from './_isString.js';
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/**
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* Tests whether or not an object is similar to an array.
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*
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* @private
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* @category Type
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* @category List
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* @sig * -> Boolean
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* @param {*} x The object to test.
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* @return {Boolean} `true` if `x` has a numeric length property and extreme indices defined; `false` otherwise.
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* @example
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*
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* _isArrayLike([]); //=> true
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* _isArrayLike(true); //=> false
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* _isArrayLike({}); //=> false
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* _isArrayLike({length: 10}); //=> false
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* _isArrayLike({0: 'zero', 9: 'nine', length: 10}); //=> true
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* _isArrayLike({nodeType: 1, length: 1}) // => false
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*/
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var _isArrayLike = _curry1(function isArrayLike(x) {
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if (_isArray(x)) { return true; }
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if (!x) { return false; }
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if (typeof x !== 'object') { return false; }
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if (_isString(x)) { return false; }
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if (x.length === 0) { return true; }
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if (x.length > 0) {
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return x.hasOwnProperty(0) && x.hasOwnProperty(x.length - 1);
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}
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return false;
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});
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export default _isArrayLike;
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