Serializer fixes (#111)

* Fixed optional check

* Update serializer.ts

* Version 1.0.10

package.json

@@ -1,7 +1,7 @@
 {
     "name": "@wharfkit/antelope",
     "description": "Library for working with Antelope powered blockchains.",
-    "version": "1.0.9",
+    "version": "1.0.10",
     "homepage": "https://github.com/wharfkit/antelope",
     "license": "BSD-3-Clause-No-Military-License",
     "main": "lib/antelope.js",

src/chain/struct.ts

@@ -7,6 +7,7 @@ import {
 import {abiDecode, Resolved} from '../serializer/decoder'
 import {abiEncode} from '../serializer/encoder'
 import {isInstanceOf} from '../utils'
+import {ABI} from './abi'
 
 export interface StructConstructor extends ABISerializableConstructor {
     new <T extends Struct>(...args: any[]): T
@@ -49,8 +50,12 @@ export class Struct implements ABISerializableObject {
     constructor(object: any) {
         const self = this.constructor as typeof Struct
         for (const field of self.structFields) {
+            const isOptional =
+                typeof field.type === 'string'
+                    ? new ABI.ResolvedType(String(field.type)).isOptional
+                    : field.optional
             const value = object[field.name]
-            if (field.optional && !value) continue
+            if (isOptional && !value) continue
             this[field.name] = value
         }
     }

test/serializer.ts

@@ -1136,7 +1136,7 @@ suite('serializer', function () {
         assert.equal(res1.superInt.toNumber(), 42)
         assert.equal(res1.jazz.value, 42)
         assert.notProperty(res1, 'maybeJazz')
-        assert.strictEqual(res1.dumbBool, null)
+        assert.notProperty(res1, 'dumbBool')
         assert.strictEqual(res1.bool, false)
         const res2 = Serializer.decode({
             object: {name: 'foo'},