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Last change
on this file was d24f17c, checked in by Aleksandar Panovski <apano77@…>, 15 months ago |
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[d24f17c] | 1 | import _curry2 from "./internal/_curry2.js";
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| 2 | import _has from "./internal/_has.js";
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| 3 | import isNil from "./isNil.js";
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| 4 | /**
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| 5 | * Returns whether or not a path exists in an object. Only the object's
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| 6 | * own properties are checked.
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| 7 | *
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| 8 | * @func
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| 9 | * @memberOf R
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| 10 | * @since v0.26.0
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| 11 | * @category Object
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| 12 | * @typedefn Idx = String | Int | Symbol
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| 13 | * @sig [Idx] -> {a} -> Boolean
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| 14 | * @param {Array} path The path to use.
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| 15 | * @param {Object} obj The object to check the path in.
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| 16 | * @return {Boolean} Whether the path exists.
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| 17 | * @see R.has
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| 18 | * @example
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| 19 | *
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| 20 | * R.hasPath(['a', 'b'], {a: {b: 2}}); // => true
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| 21 | * R.hasPath(['a', 'b'], {a: {b: undefined}}); // => true
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| 22 | * R.hasPath(['a', 'b'], {a: {c: 2}}); // => false
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| 23 | * R.hasPath(['a', 'b'], {}); // => false
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| 24 | */
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| 25 |
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| 26 | var hasPath =
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| 27 | /*#__PURE__*/
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| 28 | _curry2(function hasPath(_path, obj) {
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| 29 | if (_path.length === 0 || isNil(obj)) {
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| 30 | return false;
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| 31 | }
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| 32 |
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| 33 | var val = obj;
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| 34 | var idx = 0;
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| 35 |
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| 36 | while (idx < _path.length) {
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| 37 | if (!isNil(val) && _has(_path[idx], val)) {
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| 38 | val = val[_path[idx]];
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| 39 | idx += 1;
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| 40 | } else {
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| 41 | return false;
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| 42 | }
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| 43 | }
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| 44 |
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| 45 | return true;
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| 46 | });
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| 47 |
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| 48 | export default hasPath; |
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