Eliminating conditional blocks with value selection and assignment

original-code.js

function async saveDataOrDefault(todoId, messageRecord) {
    if(messageRecord !== null) {
        await dbModel.saveData(todoId, messageRecord);
    } else {
        await dbModel.saveData(todoId, { message: null });
    }
}

refactored-code.js

function getMessageRecordOrDefault(messageRecord) {
    return messageRecord === null ? { message: null } : messageRecord;
}

function async saveDataOrDefault(todoId, messageRecord) {
    const cleanMessageRecord = getMessageRecordOrDefault(messageRecord);

    await dbModel.saveData(todoId, cleanMessageRecord);
}

const save = (todoId, record = { message: null }) => dbModel.saveData(todoId, record);