diff --git a/eshtek/versions.ts b/eshtek/versions.ts
new file mode 100644
index 0000000..1897bf2
--- /dev/null
+++ b/eshtek/versions.ts
@@ -0,0 +1,87 @@
+export interface VersionParts {
+    year: number;
+    month: number;
+    build: number;
+    patch: number;
+}
+
+export const parseVersion = (version: string): VersionParts => {
+    const cleanVersion = version.split('-')[0];
+    const parts = cleanVersion.split('.').map(p => {
+        const num = Number(p);
+        return isNaN(num) ? 0 : num;
+    });
+    return {
+        year: parts[0] || 0,
+        month: parts[1] || 0,
+        build: parts[2] || 0,
+        patch: parts[3] || 0,
+    };
+};
+
+export const compareVersions = (a: VersionParts, b: VersionParts): number => {
+    if (a.year !== b.year) return a.year - b.year;
+    if (a.month !== b.month) return a.month - b.month;
+    if (a.build !== b.build) return a.build - b.build;
+    return a.patch - b.patch;
+};
+
+export const parseRange = (range: string): { min?: VersionParts; max?: VersionParts; minInclusive: boolean; maxInclusive: boolean } => {
+    const parts = range.split(/\s+/);
+    let min: VersionParts | undefined;
+    let max: VersionParts | undefined;
+    let minInclusive = false;
+    let maxInclusive = false;
+
+    for (let i = 0; i < parts.length; i++) {
+        const part = parts[i];
+        if (part.startsWith('>=')) {
+            min = parseVersion(part.substring(2));
+            minInclusive = true;
+        } else if (part.startsWith('>')) {
+            min = parseVersion(part.substring(1));
+            minInclusive = false;
+        } else if (part.startsWith('<=')) {
+            max = parseVersion(part.substring(2));
+            maxInclusive = true;
+        } else if (part.startsWith('<')) {
+            max = parseVersion(part.substring(1));
+            maxInclusive = false;
+        }
+    }
+
+    return { min, max, minInclusive, maxInclusive };
+};
+
+export const isTrueNASVersionInRange = (buildVersion: string, versionRange: string): boolean => {
+    if (!buildVersion) {
+        return false;
+    }
+
+    try {
+        const version = parseVersion(buildVersion);
+        const { min, max, minInclusive, maxInclusive } = parseRange(versionRange);
+
+        if (min) {
+            const cmp = compareVersions(version, min);
+            if (minInclusive) {
+                if (cmp < 0) return false;
+            } else {
+                if (cmp <= 0) return false;
+            }
+        }
+
+        if (max) {
+            const cmp = compareVersions(version, max);
+            if (maxInclusive) {
+                if (cmp > 0) return false;
+            } else {
+                if (cmp >= 0) return false;
+            }
+        }
+
+        return true;
+    } catch (error) {
+        return false;
+    }
+};