woocommerce-paypal-payments/modules/ppcp-blocks/resources/js/Helper/Helper.js

/**
 * @param str
 * @returns {string}
 */
export const toSnakeCase = (str) => {
    return str.replace(/[\w]([A-Z])/g, function(m) {
        return m[0] + "_" + m[1];
    }).toLowerCase();
}

/**
 * @param obj
 * @returns {{}}
 */
export const convertKeysToSnakeCase = (obj) => {
    const newObj = {};
    Object.keys(obj).forEach((key) => {
        const newKey = toSnakeCase(key);
        newObj[newKey] = obj[key];
    });
    return newObj;
}