Test migration to jest by hand
Apparently using regular expressions is way easier.
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6
test/mapKeys/mapKeys.js
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6
test/mapKeys/mapKeys.js
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const mapKeys = (obj, fn) =>
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Object.keys(obj).reduce((acc, k) => {
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acc[fn(obj[k], k, obj)] = obj[k];
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return acc;
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}, {
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module.exports = mapKeys;
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10
test/mapKeys/mapKeys.test.js
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10
test/mapKeys/mapKeys.test.js
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const expect = require('expect');
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const mapKeys = require('./mapKeys.js');
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test('mapKeys is a Function', () => {
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expect(mapKeys).toBeInstanceOf(Function);
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});
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t.deepEqual(mapKeys({ a: 1, b: 2 }, (val, key) => key + val), { a1: 1, b2: 2 }, 'Maps keys');
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