ck-ops/code/grafana/public/app/core/specs/flatten.test.ts

import flatten from 'app/core/utils/flatten';

describe('flatten', () => {
  it('should return flatten object', () => {
    const flattened = flatten(
      {
        level1: 'level1-value',
        deeper: {
          level2: 'level2-value',
          deeper: {
            level3: 'level3-value',
          },
        },
      },
      null as unknown as { delimiter?: any; maxDepth?: any; safe?: any }
    );

    expect(flattened['level1']).toBe('level1-value');
    expect(flattened['deeper.level2']).toBe('level2-value');
    expect(flattened['deeper.deeper.level3']).toBe('level3-value');
  });
});