5 * Given an object of violation messages, return another
6 * that provides the same messages postfixed with the rule
7 * that has been violated.
9 * @param {string} ruleName
10 * @param {object} messages - Object whose keys are message identifiers
11 * and values are either message strings or functions that return message strings
12 * @return {object} New message object, whose messages will be marked with the rule name
14 module.exports = function(
15 ruleName /*: string*/,
18 return Object.keys(messages).reduce((newMessages, messageId) => {
19 const messageText = messages[messageId];
20 if (typeof messageText === "string") {
21 newMessages[messageId] = `${messageText} (${ruleName})`;
23 newMessages[messageId] = function() {
24 return `${messageText.apply(null, arguments)} (${ruleName})`;