My code for a website of forum (blog) as followed :

import { AUTH } from '../actionTypes/actionTypes';
import * as api from '../api';

export default signin (formData, history) = async (dispatch) => {
    try {
        const { data } = await api.signIn(formData);

        dispatch({ type: AUTH, data });

        history.push('/');
    } catch (error) {
        console.log(error);
    }
};

but I receive this error , line (4):

"ReferenceError: Invalid left-hand side in assignment"

How to fix it?