added make browserlist(autoprefixer) work fixed

1 files changed, 49 insertions, 0 deletions

diff --git a/node_modules/webpack/lib/AbstractMethodError.js b/node_modules/webpack/lib/AbstractMethodError.js
new file mode 100644
index 00000000..bbf2d08a
--- /dev/null
+++ b/node_modules/webpack/lib/AbstractMethodError.js
@@ -0,0 +1,49 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Ivan Kopeykin @vankop
+*/
+
+"use strict";
+
+const WebpackError = require("./WebpackError");
+const CURRENT_METHOD_REGEXP = /at ([a-zA-Z0-9_.]*)/;
+
+/**
+ * @param {string=} method method name
+ * @returns {string} message
+ */
+function createMessage(method) {
+	return `Abstract method${method ? " " + method : ""}. Must be overridden.`;
+}
+
+/**
+ * @constructor
+ */
+function Message() {
+	/** @type {string} */
+	this.stack = undefined;
+	Error.captureStackTrace(this);
+	/** @type {RegExpMatchArray} */
+	const match = this.stack.split("\n")[3].match(CURRENT_METHOD_REGEXP);
+
+	this.message = match && match[1] ? createMessage(match[1]) : createMessage();
+}
+
+/**
+ * Error for abstract method
+ * @example
+ * class FooClass {
+ *     abstractMethod() {
+ *         throw new AbstractMethodError(); // error message: Abstract method FooClass.abstractMethod. Must be overridden.
+ *     }
+ * }
+ *
+ */
+class AbstractMethodError extends WebpackError {
+	constructor() {
+		super(new Message().message);
+		this.name = "AbstractMethodError";
+	}
+}
+
+module.exports = AbstractMethodError;