Merge pull request #368 from juliancwirko/address-validator

Add address validator static method without throwing errors

src/address.spec.ts

@@ -44,4 +44,10 @@ describe("test address", () => {
         assert.throw(() => new Address("erd1l453hd0gt5gzdp7czpuall8ggt2dcv5zwmfdf3sd3lguxseux2"), errors.ErrAddressCannotCreate);
         assert.throw(() => new Address("xerd1l453hd0gt5gzdp7czpuall8ggt2dcv5zwmfdf3sd3lguxseux2fsmsgldz"), errors.ErrAddressCannotCreate);
     });
+
+    it("should validate the address without throwing the error", () => {
+        assert.isTrue(Address.isValid(aliceBech32));
+        assert.isFalse(Address.isValid('xerd1l453hd0gt5gzdp7czpuall8ggt2dcv5zwmfdf3sd3lguxseux2fsmsgldz'));
+        assert.isFalse(Address.isValid('erd1l453hd0gt5gzdp7czpuall8ggt2dcv5zwmfdf3sd3lguxseux2'))
+    })
 });

src/address.ts

@@ -122,6 +122,23 @@ export class Address {
         return Address.fromValidHex(pubkey.toString("hex"));
     }
 
+    /**
+     * Performs address validation without throwing errors
+     */
+    static isValid(value: string): boolean {
+        const decoded = bech32.decodeUnsafe(value);
+        const prefix = decoded?.prefix;
+        const pubkey = decoded
+            ? Buffer.from(bech32.fromWords(decoded.words))
+            : undefined;
+
+        if (prefix !== HRP || pubkey?.length !== PUBKEY_LENGTH) {
+            return false;
+        }
+
+        return true;
+    }
+
     /**
      * Returns the hex representation of the address (pubkey)
      */