Moved the NodeJS version of the application to the app/ directory.

app/backend/src/version.ts

@@ -0,0 +1,22 @@
+const SEMVER_PATTERN = /^[0-9]+\.[0-9]+\.[0-9]+$/;
+
+const semverSortKey = (value: string): number[] => value.split(".").map((part) => Number.parseInt(part, 10));
+
+export const sortImageVersionsIfSemantic = (versions: string[]): string[] => {
+  if (!versions.every((value) => SEMVER_PATTERN.test(value))) {
+    return [...versions].sort((a, b) => a.localeCompare(b, undefined, { numeric: true, sensitivity: "base" }));
+  }
+
+  return [...versions].sort((a, b) => {
+    const aParts = semverSortKey(a);
+    const bParts = semverSortKey(b);
+
+    for (let i = 0; i < aParts.length; i += 1) {
+      if (aParts[i] !== bParts[i]) {
+        return aParts[i] - bParts[i];
+      }
+    }
+
+    return 0;
+  });
+};