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Make R.eqProps safe for null/undefined arguments #2943

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Make R.eqProps safe for null/undefined arguments #2943

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5 changes: 3 additions & 2 deletions source/eqProps.js
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Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
import _curry3 from './internal/_curry3';
import equals from './equals';
import prop from './prop';


/**
Expand All @@ -23,7 +24,7 @@ import equals from './equals';
* R.eqProps('a', o1, o2); //=> false
* R.eqProps('c', o1, o2); //=> true
*/
var eqProps = _curry3(function eqProps(prop, obj1, obj2) {
return equals(obj1[prop], obj2[prop]);
var eqProps = _curry3(function eqProps(key, obj1, obj2) {
return equals(prop(key, obj1), prop(key, obj2));
});
export default eqProps;
15 changes: 15 additions & 0 deletions test/eqProps.js
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Expand Up @@ -20,4 +20,19 @@ describe('eqProps', function() {
eq(R.eqProps('value', {value: new Just([42])}, {value: new Just([42])}), true);
});

it('can handle null or undefined object', function() {
eq(R.eqProps('value', {value: 0}, null), false);
eq(R.eqProps('value', null, {value: 0}), false);
eq(R.eqProps('value', {value: 0}, undefined), false);
eq(R.eqProps('value', undefined, {value: 0}), false);
eq(R.eqProps('value', undefined, {value: undefined}), true);
eq(R.eqProps('value', null, {value: undefined}), true);
eq(R.eqProps('value', {value: undefined}, undefined), true);
eq(R.eqProps('value', {value: undefined}, null), true);
eq(R.eqProps('value', {}, null), true);
eq(R.eqProps('value', {}, undefined), true);
eq(R.eqProps('value', null, {}), true);
eq(R.eqProps('value', undefined, {}), true);
});

});