Don't collapse newlines in error messages

src/packages/render/index.js

@@ -1,6 +1,7 @@
 "use strict";
 
 const chalk = require("chalk");
+const syncpipe = require("syncpipe");
 
 const { validateArguments } = require("@validatem/core");
 const required = require("@validatem/required");
@@ -12,8 +13,27 @@ const stripErrorFromStack = require("./strip-error-from-stack");
 const isInstanceOf = require("./is-instance-of");
 const getChain = require("../get-chain");
 
-function formattedErrorHeading(error, colorAll = false) {
-	let formattedMessage = error.message.trim().replace(/\n/g, " \\n ");
+function prefixExtraLines(string, prefix) {
+	return string
+		.split("\n")
+		.map((line, i) => {
+			if (i > 0) {
+				return prefix + line;
+			} else {
+				return line;
+			}
+		})
+		.join("\n");
+}
+
+function formattedErrorHeading(error, colorAll = false, indentation) {
+	let formattedMessage = syncpipe(error.message, [
+		(_) => _.trim(),
+		(_) => (indentation != null)
+			? prefixExtraLines(_, indentation)
+			: _
+	]);
+
 	let formattedName = chalk.red(`${chalk.bold(error.name)}:`);
 
 	let coloredMessage = (colorAll === true) ? chalk.red(formattedMessage) : formattedMessage;
@@ -72,7 +92,7 @@ module.exports = function renderError(_error, _options) {
 
 			// console.log(cleanStack);
 			
-		return prefix + formattedErrorHeading(error);
+			return prefix + formattedErrorHeading(error, false, "  ");
 		}).join("\n");
 
 		let stacktraces = detailedErrorsToDisplay.map((error, i) => {