Extract compile function to another file

src/lang/utils/functions.js

@@ -0,0 +1,14 @@
+const compile = require("pug").compile
+
+/**
+ * @param {string} text
+ */
+function pug(text) {
+	let lines = text.split("\n")
+	while (lines[0] === "") lines.shift()
+	const indentLevel = lines[0].match(/^\t*/)[0].length
+	lines = lines.map(l => l.replace(new RegExp(`^\\t{0,${indentLevel}}`), ""))
+	return compile(lines.join("\n"))
+}
+
+module.exports.pug = pug