fix(kitsu-core): use typeof instead of constructor comparison for checking if Object (#654)

Author: wopian

packages/kitsu-core/src/deattribute/index.js

@@ -29,7 +29,7 @@
 export function deattribute (data) {
   if (typeof data === 'object' && data !== null) {
     if (Array.isArray(data)) data.map(el => deattribute(el))
-    else if (data.attributes?.constructor === Object) {
+    else if (typeof data.attributes === 'object' && !Array.isArray(data.attributes) && data.attributes !== null) {
       for (const key of Object.keys(data.attributes)) {
         // Hoist everything but attributes to parent to avoid issues with deleting
         // as can't delete data.attributes[key] as it will belete data[key] too

packages/kitsu-core/src/deserialise/index.js

@@ -61,7 +61,7 @@ export function deserialise (response) {
   if (Array.isArray(response.data)) response = deserialiseArray(response)
   // Single resource with included relationships
   else if (response.included) response.data = linkRelationships(response.data, response.included)
-  else if (response.data?.constructor === Object) response.data = linkRelationships(response.data)
+  else if (typeof response.data === 'object' && response.data !== null) response.data = linkRelationships(response.data)
 
   delete response.included
 

packages/kitsu-core/src/deserialise/index.spec.js

@@ -489,6 +489,11 @@ describe('kitsu-core', () => {
       expect(deserialise([])).toEqual([])
     })
 
+    it('deserialises data correctly if null', () => {
+      expect.assertions(1)
+      expect(deserialise({ data: null })).toStrictEqual({ data: null })
+    })
+
     it('keeps all relationships', () => {
       expect.assertions(1)
       expect(deserialise({

packages/kitsu-core/src/linkRelationships/index.js

@@ -120,7 +120,7 @@ export function linkRelationships (data, included = [], previouslyLinked = {}) {
     }
   }
 
-  if (Object.keys(relationships || []).length === 0 && relationships?.constructor === Object) {
+  if (Object.keys(relationships || []).length === 0 && typeof relationships === 'object' && !Array.isArray(relationships) && relationships !== null) {
     delete data.relationships
   }
 

packages/kitsu-core/src/serialise/index.js

@@ -106,7 +106,7 @@ function serialiseRelation (node, nodeType, key, data) {
 function serialiseAttr (node, key, data) {
   if (!data.attributes) data.attributes = {}
   if (key === 'links' && (typeof node.self === 'string' || typeof node.related === 'string')) data.links = node
-  else if (key === 'meta' && node.constructor === Object) data.meta = node
+  else if (key === 'meta' && typeof node === 'object' && !Array.isArray(node) && node !== null) data.meta = node
   else data.attributes[key] = node
   return data
 }
@@ -170,7 +170,7 @@ function serialiseRootObject (type, payload, method, options) {
     const node = payload[key]
     const nodeType = options.pluralTypes(options.camelCaseTypes(key))
     // 1. Skip null nodes, 2. Only grab objects, 3. Filter to only serialise relationable objects
-    if (node !== null && node?.constructor === Object && hasID(node)) {
+    if (typeof node === 'object' && !Array.isArray(node) && node !== null && hasID(node)) {
       data = serialiseRelation(node, nodeType, key, data)
     // 1. Don't place id/key inside attributes object
     } else if (key !== 'id' && key !== 'type') {