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Make _.defaultTo return the defaultValue for NaN and nullish values.

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This commit is contained in:
John-David Dalton
2016-05-25 13:00:10 -07:00
parent 0964f9175e
commit 90f95306f9
2 changed files with 6 additions and 5 deletions
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7
lodash.js
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@@ -14706,8 +14706,9 @@
}
/**
* Checks `value` to determine if a default value should be returned.
* If `value` is `undefined`, the `defaultValue` is returned in its place.
* Checks `value` to determine whether a default value should be returned in
* its place. The `defaultValue` is returned if `value` is `NaN`, `null`,
* or `undefined`.
*
* @static
* @memberOf _
@@ -14725,7 +14726,7 @@
* // => 10
*/
function defaultTo(value, defaultValue) {
return value === undefined ? defaultValue : value;
return (value == null || value !== value) ? defaultValue : value;
}
/**

4
test/test.js
View File

@@ -4604,11 +4604,11 @@
QUnit.module('lodash.defaultTo');
(function() {
QUnit.test('should return a default value if `value` is `undefined`', function(assert) {
QUnit.test('should return a default value if `value` is `NaN` or nullish', function(assert) {
assert.expect(1);
var expected = lodashStable.map(falsey, function(value) {
return value === undefined ? 1 : value;
return (value == null || value !== value) ? 1 : value;
});
var actual = lodashStable.map(falsey, function(value) {