unleash-server/dist/lib/util/flattenPayload.test.js

Unleash is an enterprise ready feature flag service. It provides different strategies for handling feature flags.

import { flattenPayload } from './flattenPayload.js';
describe('flattenPayload', () => {
    it('should flatten a payload', () => {
        const payload = {
            a: 1,
            b: {
                c: 2,
                d: [3, 4],
                e: {
                    f: 5,
                },
            },
        };
        expect(flattenPayload(payload)).toEqual({
            a: 1,
            'b.c': 2,
            'b.d[0]': 3,
            'b.d[1]': 4,
            'b.e.f': 5,
        });
    });
    it('should handle conflicting keys gracefully by prioritizing later keys', () => {
        const payload = {
            a: {
                b: 1,
            },
            'a.b': 2,
        };
        expect(flattenPayload(payload)).toEqual({
            'a.b': 2,
        });
    });
});
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