Throw exception on UInt64.compact.

src/core/format/RawUInt64.ts

@@ -31,7 +31,7 @@ export class RawUInt64 {
      * @returns {number|module:coders/uint64~uint64}
      * A numeric if the uint64 is no greater than Number.MAX_SAFE_INTEGER or the original uint64 value otherwise.
      */
-    public static compact = (uint64): any => {
+    public static compact = (uint64: number[]): number | number[] => {
         const low = uint64[0];
         const high = uint64[1];
 

src/model/UInt64.ts

@@ -124,7 +124,11 @@ export class UInt64 {
      * @returns {number}
      */
     public compact(): number {
-        return uint64.compact(this.toDTO());
+        const result = uint64.compact(this.toDTO());
+        if (Array.isArray(result)) {
+            throw new Error('Compacted value is greater than Number.Max_Value.');
+        }
+        return result;
     }
 
     /**

test/model/UInt64.spec.ts

@@ -66,6 +66,12 @@ describe('Uint64', () => {
         expect(uint64Compact).to.be.equal(51110867862);
     });
 
+    it('should compact UInt64 number', () => {
+        expect(() => {
+            new UInt64([3866227606, 0x00200000 + 1]).compact();
+        }).to.throw(Error, 'Compacted value is greater than Number.Max_Value.');
+    });
+
     it('should fromUint throw exception with negative uint value', () => {
         expect(() => {
             UInt64.fromUint(-1);