Base nuxt move after refactoring until no warnings

There still exists an issue with one Adobe led library ; @international-dates don't seem to compile their sourcemaps correctly.
I don't think this is something I can fix however, and it may require hacks and workarounds to solve from what I've gathered

utils/Regex.ts

@@ -0,0 +1,29 @@
+/**
+ * Check if the string parses as single digit
+ *
+ * @param str String to test
+ * @returns Result of the test
+ */
+export function isDigit(str: string) {
+  return RegExp(/^\d{1}$/g).test(str)
+}
+
+/**
+ * Check if the string parses as an int
+ *
+ * @param str String to test
+ * @returns Result of the test
+ */
+export function isInt(str: string) {
+  return RegExp(/^[0-9]*$/g).test(str)
+}
+
+/**
+ * Check if the string parses as a signed int (negative or positive)
+ *
+ * @param str String to test
+ * @returns Result of the test
+ */
+export function isSignedInt(str: string) {
+  return RegExp(/^[-+]?[0-9]+$/g).test(str)
+}