Display non-chained errors more simply, without a summary section

src/packages/render/index.js

@@ -19,7 +19,24 @@ function formattedErrorHeading(error, colorAll = false) {
 	let coloredMessage = (colorAll === true) ? chalk.red(formattedMessage) : formattedMessage;
 
 	return `${formattedName} ${coloredMessage}`;
-	// return chalk.red(`${chalk.bold(error.name)}: ${formattedMessage}`);
+}
+
+function formattedError(error, indentation = "", prefix = "") {
+	let strippedStack = stripErrorFromStack(error.stack);
+
+	let formattedStack = strippedStack.split("\n").map((line) => {
+		if (line.trim().length === 0) {
+			return null;
+		} else if (line[0] === " ") {
+			return indentation + line;
+		} else {
+			return indentation + `   ${line}`;
+		}
+	}).filter(line => line != null).join("\n");
+
+	let heading = indentation + prefix + formattedErrorHeading(error);
+
+	return `${heading}\n${formattedStack}`;
 }
 
 module.exports = function renderError(_error, _options) {
@@ -34,6 +51,11 @@ module.exports = function renderError(_error, _options) {
 	let {allStacktraces} = options;
 
 	let errors = getChain(error);
+
+	if (errors.length === 1) {
+		// Special case: there's not actually a cause chain, so we should render the error more simply
+		return formattedError(errors[0]);
+	} else {
 	let detailedErrorsToDisplay = (allStacktraces === true) ? errors : errors.slice(-1);
 
 	let summary = errors.map((error, i) => {
@@ -57,21 +79,7 @@ module.exports = function renderError(_error, _options) {
 		let causedByPrefix = (i > 0 ? "Caused by: " : "");
 		let causedByPadding = (i > 0) ? " " : "";
 
-		let strippedStack = stripErrorFromStack(error.stack);
-
-		let formattedStack = strippedStack.split("\n").map((line) => {
-			if (line.trim().length === 0) {
-				return null;
-			} else if (line[0] === " ") {
-				return causedByPadding + line;
-			} else {
-				return causedByPadding + `   ${line}`;
-			}
-		}).filter(line => line != null).join("\n");
-
-		let heading = causedByPadding + causedByPrefix + formattedErrorHeading(error);
-
-		return `${heading}\n${formattedStack}`;
+			return formattedError(error, causedByPadding, causedByPrefix);
 	}).join("\n\n");
 
 	let stacktraceSection = (allStacktraces === true)
@@ -79,4 +87,5 @@ module.exports = function renderError(_error, _options) {
 		: `${chalk.cyan("Stacktrace for original error:")}\n\n${stacktraces}`;
 
 	return `${summary}\n\n${stacktraceSection}`;
+	}
 };