Convert serialization.js to TS

Summary:
Convert serialization to typescript.

I tried to type the deserialize function but don't know enough about the expected format to be able to tell what the types should be.

Reviewed By: passy

Differential Revision: D16785945

fbshipit-source-id: 45de7ee1c8972314a52abcf20d428ba44f031a00

headless/index.js

@@ -22,7 +22,7 @@ import {listDevices} from '../src/utils/listDevices.tsx';
 import setup from '../static/setup.js';
 import type {Store} from '../src/reducers/index.tsx';
 import {getPersistentPlugins} from '../src/utils/pluginUtils.tsx';
-import {serialize} from '../src/utils/serialization';
+import {serialize} from '../src/utils/serialization.tsx';
 import type BaseDevice from '../src/devices/BaseDevice.tsx';
 
 import {getStringFromErrorLike} from '../src/utils/index.tsx';

src/utils/__tests__/serialization.node.js

@@ -5,7 +5,7 @@
  * @format
  */
 
-import {makeObjectSerializable, deserializeObject} from '../serialization';
+import {makeObjectSerializable, deserializeObject} from '../serialization.tsx';
 
 class TestObject extends Object {
   constructor(title: Object, map: ?Map<any, any>, set: ?Set<any>) {

src/utils/serialization.tsx

@@ -5,7 +5,7 @@
  * @format
  */
 
-import {Idler} from './Idler.tsx';
+import {Idler} from './Idler';
 export async function serialize(
   obj: Object,
   idler?: Idler,
@@ -16,16 +16,16 @@ export async function serialize(
   );
 }
 
-export function deserialize(str: string): Object {
+export function deserialize(str: string): any {
   return deserializeObject(JSON.parse(str));
 }
 
 function processArray(
   element: any,
-  array: [any],
+  array: Array<any>,
   stack: Array<any>,
   dict: Map<any, any>,
-): {childNeedsIteration: boolean, outputArr: Array<any>} {
+): {childNeedsIteration: boolean; outputArr: Array<any>} {
   // Adds the array item to the stack if it needs to undergo iteration to serialise it. Otherwise it adds the serialized version of the item to the memoization dict
   const outputArr = [];
   let childNeedsIteration = false;
@@ -74,7 +74,7 @@ export function processMapElement(
   obj: Map<any, any>,
   dict: Map<any, any>,
   stack: Array<any>,
-): {childNeedsIteration: boolean, outputArray: Array<any>} {
+): {childNeedsIteration: boolean; outputArray: Array<any>} {
   const arr = [];
   let childNeedsIteration = false;
   for (const item of [...obj]) {
@@ -95,7 +95,7 @@ export function processObjectToBeSerialized(
   element: Object,
   dict: Map<any, any>,
   stack: Array<any>,
-): {childNeedsIteration: boolean, outputObject: Object} {
+): {childNeedsIteration: boolean; outputObject: Object} {
   const array = Object.entries(element);
   let obj = {};
   let childNeedsIteration = false;
@@ -122,7 +122,7 @@ export async function makeObjectSerializable(
   obj: any,
   idler?: Idler,
   statusUpdate?: (msg: string) => void,
-): any {
+): Promise<any> {
   if (!(obj instanceof Object)) {
     return obj;
   }
@@ -213,6 +213,7 @@ export function deserializeObject(obj: any): any {
     switch (type) {
       case 'Map': {
         return new Map(
+          // @ts-ignore
           [...obj.data].map(item => [...item].map(deserializeObject)),
         );
       }