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Remove unused groupByEveryN module from react-native

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Summary: Changelog: [internal] Removed unused internal groupByEveryN module

Reviewed By: sammy-SC

Differential Revision: D43116883

fbshipit-source-id: 4d2e3240ab11cfc67ae4e08b9dbf4c1ca1e2f388
This commit is contained in:
Rubén Norte
2023-02-09 06:29:14 -08:00
committed by Facebook GitHub Bot
parent b2a858d4f3
commit 69e23658e1
2 changed files with 0 additions and 105 deletions
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Libraries/Utilities/__tests__/groupByEveryN-test.js
-54
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@@ -1,54 +0,0 @@
/**
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @format
* @oncall react_native
*/
'use strict';
describe('groupByEveryN', () => {
const groupByEveryN = require('../groupByEveryN');
it('should group by with different n', () => {
expect(groupByEveryN([1, 2, 3, 4, 5, 6, 7, 8, 9], 1)).toEqual([
[1],
[2],
[3],
[4],
[5],
[6],
[7],
[8],
[9],
]);
expect(groupByEveryN([1, 2, 3, 4, 5, 6, 7, 8, 9], 2)).toEqual([
[1, 2],
[3, 4],
[5, 6],
[7, 8],
[9, null],
]);
expect(groupByEveryN([1, 2, 3, 4, 5, 6, 7, 8, 9], 3)).toEqual([
[1, 2, 3],
[4, 5, 6],
[7, 8, 9],
]);
expect(groupByEveryN([1, 2, 3, 4, 5, 6, 7, 8, 9], 4)).toEqual([
[1, 2, 3, 4],
[5, 6, 7, 8],
[9, null, null, null],
]);
});
it('should fill with null', () => {
expect(groupByEveryN([], 4)).toEqual([]);
expect(groupByEveryN([1], 4)).toEqual([[1, null, null, null]]);
expect(groupByEveryN([1, 2], 4)).toEqual([[1, 2, null, null]]);
expect(groupByEveryN([1, 2, 3], 4)).toEqual([[1, 2, 3, null]]);
expect(groupByEveryN([1, 2, 3, 4], 4)).toEqual([[1, 2, 3, 4]]);
});
});
Libraries/Utilities/groupByEveryN.js
-51
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@@ -1,51 +0,0 @@
/**
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @format
* @flow strict
*/
/**
* Useful method to split an array into groups of the same number of elements.
* You can use it to generate grids, rows, pages...
*
* If the input length is not a multiple of the count, it'll fill the last
* array with null so you can display a placeholder.
*
* Example:
* groupByEveryN([1, 2, 3, 4, 5], 3)
* => [[1, 2, 3], [4, 5, null]]
*
* groupByEveryN([1, 2, 3], 2).map(elems => {
* return <Row>{elems.map(elem => <Elem>{elem}</Elem>)}</Row>;
* })
*/
'use strict';
function groupByEveryN<T>(array: Array<T>, n: number): Array<Array<?T>> {
const result = [];
let temp: Array<?T> = [];
for (let i = 0; i < array.length; ++i) {
if (i > 0 && i % n === 0) {
result.push(temp);
temp = [];
}
temp.push(array[i]);
}
if (temp.length > 0) {
while (temp.length !== n) {
temp.push(null);
}
result.push(temp);
}
return result;
}
module.exports = groupByEveryN;