[DX-2940,3042]- version is a optional and added description in file interface

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@contentstack/types-generator",
-  "version": "3.2.0",
+  "version": "3.3.0",
   "description": "Contentstack type definition generation library",
   "private": false,
   "author": "Contentstack",

src/generateTS/factory.ts

@@ -269,9 +269,7 @@ export default function (userOptions: TSGenOptions) {
       define_interface(contentType, options.systemFields),
       "{",
       ["/**", "Version", "*/"].join(" "),
-      contentType.schema_type === "global_field"
-        ? `_version?: number;`
-        : `_version: number;`,
+      `_version?: number;`,
       visit_fields(contentType.schema),
       "}",
     ]

src/generateTS/stack/builtins.ts

@@ -6,9 +6,9 @@ export const defaultInterfaces = (
   const defaultInterfaces = [
     `type BuildTuple<T, N extends number, R extends T[] = []> =
     R['length'] extends N ? R : BuildTuple<T, N, [...R, T]>`,
-      `type TuplePrefixes<T extends any[]> = 
+    `type TuplePrefixes<T extends any[]> = 
     T extends [any, ...infer Rest] ? T | TuplePrefixes<Rest extends any[] ? Rest : []> : []`,
-      `type MaxTuple<T, N extends number> = TuplePrefixes<BuildTuple<T, N>>`,
+    `type MaxTuple<T, N extends number> = TuplePrefixes<BuildTuple<T, N>>`,
     `export interface ${prefix}PublishDetails {
             environment: string;
             locale: string;
@@ -32,6 +32,7 @@ export const defaultInterfaces = (
               _version: number;
               title: string;
               _metadata?:object;
+              description?:string;
               publish_details: ${prefix}PublishDetails;
           }`,
     `export interface ${prefix}Link { 

tests/unit/tsgen/boolean.test.ts

@@ -25,7 +25,7 @@ describe("builtin boolean field", () => {
       "export interface IBoolean
       {
       /** Version */
-      _version: number;
+      _version?: number;
       title: string;
       boolean: boolean;
       }"

tests/unit/tsgen/custom-field.test.ts

@@ -20,7 +20,7 @@ describe("JSON RTE", () => {
     "export interface Home
     {
     /** Version */
-    _version: number;
+    _version?: number;
     title: string;
     custom_key_value_pair?: { value: { key: string; value: string }[] };
     }"

tests/unit/tsgen/defaults.test.ts

@@ -18,7 +18,7 @@ describe("default single content block", () => {
       "export interface IMetadataSingleContentBlock
       {
       /** Version */
-      _version: number;
+      _version?: number;
       title: string;
       }"
     `);
@@ -44,7 +44,7 @@ describe("default single webpage", () => {
       "export interface IMetadataSingleWebpage
       {
       /** Version */
-      _version: number;
+      _version?: number;
       title: string;
       url: string;
       }"

tests/unit/tsgen/global.fields.test.ts

@@ -51,7 +51,7 @@ describe("global fields", () => {
       "export interface IHome
       {
       /** Version */
-      _version: number;
+      _version?: number;
       title: string;
       taxonomies?: ITaxonomy[];
       }"

tests/unit/tsgen/group.test.ts

@@ -24,7 +24,7 @@ describe("group", () => {
       "export interface Group
       {
       /** Version */
-      _version: number;
+      _version?: number;
       title: string;
       multiple_group_max_limit?: MaxTuple<{
       number?: number | null;

tests/unit/tsgen/isodate.test.ts

@@ -25,7 +25,7 @@ describe("builtin isodate field", () => {
       "export interface Isodate
       {
       /** Version */
-      _version: number;
+      _version?: number;
       title: string;
       date?: string | null;
       date_required: string;