/**
 * A shallow diff function that returns the difference between two objects.
 *
 * @param {object} o1 first object
 * @param {object} o2 second object
 * @returns {string[]} the difference between two objects
 * @example
 *  let prevState = {name: 'aa', age: 10 };
 *  let currState = {name: 'bb', age: 10, gender: 'x'}
 *
 *  diff(b, a); // ["name", "gender"]
 *  diff(a, b); // ["name"]
 */
declare const diff: (o1: object, o2: object) => string[];
export default diff;
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