1 files changed, 101 insertions, 0 deletions
diff --git a/node_modules/webpack/lib/ErrorHelpers.js b/node_modules/webpack/lib/ErrorHelpers.js
new file mode 100644
index 00000000..bec99ef7
--- /dev/null
+++ b/node_modules/webpack/lib/ErrorHelpers.js
@@ -0,0 +1,101 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+const loaderFlag = "LOADER_EXECUTION";
+
+const webpackOptionsFlag = "WEBPACK_OPTIONS";
+
+/**
+ * @param {string} stack stack trace
+ * @param {string} flag flag to cut off
+ * @returns {string} stack trace without the specified flag included
+ */
+const cutOffByFlag = (stack, flag) => {
+	const errorStack = stack.split("\n");
+	for (let i = 0; i < errorStack.length; i++) {
+		if (errorStack[i].includes(flag)) {
+			errorStack.length = i;
+		}
+	}
+	return errorStack.join("\n");
+};
+
+/**
+ * @param {string} stack stack trace
+ * @returns {string} stack trace without the loader execution flag included
+ */
+const cutOffLoaderExecution = stack => cutOffByFlag(stack, loaderFlag);
+
+/**
+ * @param {string} stack stack trace
+ * @returns {string} stack trace without the webpack options flag included
+ */
+const cutOffWebpackOptions = stack => cutOffByFlag(stack, webpackOptionsFlag);
+
+/**
+ * @param {string} stack stack trace
+ * @param {string} message error message
+ * @returns {string} stack trace without the message included
+ */
+const cutOffMultilineMessage = (stack, message) => {
+	const stackSplitByLines = stack.split("\n");
+	const messageSplitByLines = message.split("\n");
+
+	/** @type {string[]} */
+	const result = [];
+
+	stackSplitByLines.forEach((line, idx) => {
+		if (!line.includes(messageSplitByLines[idx])) result.push(line);
+	});
+
+	return result.join("\n");
+};
+
+/**
+ * @param {string} stack stack trace
+ * @param {string} message error message
+ * @returns {string} stack trace without the message included
+ */
+const cutOffMessage = (stack, message) => {
+	const nextLine = stack.indexOf("\n");
+	if (nextLine === -1) {
+		return stack === message ? "" : stack;
+	} else {
+		const firstLine = stack.slice(0, nextLine);
+		return firstLine === message ? stack.slice(nextLine + 1) : stack;
+	}
+};
+
+/**
+ * @param {string} stack stack trace
+ * @param {string} message error message
+ * @returns {string} stack trace without the loader execution flag and message included
+ */
+const cleanUp = (stack, message) => {
+	stack = cutOffLoaderExecution(stack);
+	stack = cutOffMessage(stack, message);
+	return stack;
+};
+
+/**
+ * @param {string} stack stack trace
+ * @param {string} message error message
+ * @returns {string} stack trace without the webpack options flag and message included
+ */
+const cleanUpWebpackOptions = (stack, message) => {
+	stack = cutOffWebpackOptions(stack);
+	stack = cutOffMultilineMessage(stack, message);
+	return stack;
+};
+
+exports.cutOffByFlag = cutOffByFlag;
+exports.cutOffLoaderExecution = cutOffLoaderExecution;
+exports.cutOffWebpackOptions = cutOffWebpackOptions;
+exports.cutOffMultilineMessage = cutOffMultilineMessage;
+exports.cutOffMessage = cutOffMessage;
+exports.cleanUp = cleanUp;
+exports.cleanUpWebpackOptions = cleanUpWebpackOptions;