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Consolidate aggregate modules.

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John-David Dalton
2017-01-11 12:26:35 -08:00
parent 3b4cbc70e7
commit d80077ed94
7 changed files with 36 additions and 93 deletions
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19
groupBy.js
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@@ -1,5 +1,5 @@
import baseAssignValue from './.internal/baseAssignValue.js';
import createAggregator from './.internal/createAggregator.js';
import reduce from './reduce.js';
/** Used to check objects for own properties. */
const hasOwnProperty = Object.prototype.hasOwnProperty;
@@ -21,12 +21,15 @@ const hasOwnProperty = Object.prototype.hasOwnProperty;
* groupBy([6.1, 4.2, 6.3], Math.floor);
* // => { '4': [4.2], '6': [6.1, 6.3] }
*/
const groupBy = createAggregator((result, value, key) => {
if (hasOwnProperty.call(result, key)) {
result[key].push(value);
} else {
baseAssignValue(result, key, [value]);
}
});
function groupBy(collection, iteratee) {
return reduce(collection, (result, value, key) => {
if (hasOwnProperty.call(result, key)) {
result[key].push(value);
} else {
baseAssignValue(result, key, [value]);
}
return result;
}, {});
}
export default groupBy;