fix(discriminators): fix own member object iteration on prepare-resolvers

Author: mernxl

src/discriminators/prepare-resolvers/prepareBaseResolvers.js

@@ -33,7 +33,7 @@ function setDKeyEnumOnITCArgs(resolver, baseTC: DiscriminatorTypeComposer<any>)
 // composeWithMongoose composers
 export function prepareBaseResolvers(baseTC: DiscriminatorTypeComposer<any>) {
   for (const resolverName in EMCResolvers) {
-    if (baseTC.hasResolver(resolverName)) {
+    if (EMCResolvers.hasOwnProperty(resolverName) && baseTC.hasResolver(resolverName)) {
       const resolver = baseTC.getResolver(resolverName);
 
       switch (resolverName) {

src/discriminators/prepare-resolvers/prepareChildResolvers.js

@@ -130,7 +130,7 @@ export function prepareChildResolvers<TContext>(
   opts: DiscriminatorOptions
 ) {
   for (const resolverName in EMCResolvers) {
-    if (childTC.hasResolver(resolverName)) {
+    if (EMCResolvers.hasOwnProperty(resolverName) && childTC.hasResolver(resolverName)) {
       const resolver = childTC.getResolver(resolverName);
 
       switch (resolverName) {