[#94] Backend

https://project.mdnd-it.cc/work_packages/94

SerpentRace_Backend/node_modules/split-on-first/index.js

@@ -0,0 +1,22 @@
+'use strict';
+
+module.exports = (string, separator) => {
+	if (!(typeof string === 'string' && typeof separator === 'string')) {
+		throw new TypeError('Expected the arguments to be of type `string`');
+	}
+
+	if (separator === '') {
+		return [string];
+	}
+
+	const separatorIndex = string.indexOf(separator);
+
+	if (separatorIndex === -1) {
+		return [string];
+	}
+
+	return [
+		string.slice(0, separatorIndex),
+		string.slice(separatorIndex + separator.length)
+	];
+};