npm and error messages

node_modules/loader-utils/lib/parseString.js

@@ -0,0 +1,19 @@
+"use strict";
+
+function parseString(str) {
+	try {
+		if(str[0] === "\"") return JSON.parse(str);
+		if(str[0] === "'" && str.substr(str.length - 1) === "'") {
+			return parseString(
+				str
+					.replace(/\\.|"/g, x => x === "\"" ? "\\\"" : x)
+					.replace(/^'|'$/g, "\"")
+			);
+		}
+		return JSON.parse("\"" + str + "\"");
+	} catch(e) {
+		return str;
+	}
+}
+
+module.exports = parseString;