Implemented preview token generation

CHANGELOG.md

@@ -1,4 +1,7 @@
 # Changelog
+## [v1.21.2](https://github.com/contentstack/contentstack-management-javascript/tree/v1.21.2) (2025-05-19)
+ - Enhancement
+   - Added preview token generation.
 
 ## [v1.21.1](https://github.com/contentstack/contentstack-management-javascript/tree/v1.21.1) (2025-05-12)
  - Fix

lib/entity.js

@@ -85,19 +85,23 @@ export const upload = async ({ http, urlPath, stackHeaders, formData, params, me
   }
 }
 
-export const create = ({ http, params }) => {
+// eslint-disable-next-line camelcase
+export const create = ({ http, params = {}, create_with_preview_token = false }) => {
   return async function (data, param) {
     this.stackHeaders = {
       ...this.stackHeaders
     }
+    const queryParams = {
+      // eslint-disable-next-line camelcase
+      ...(create_with_preview_token ? { create_with_preview_token: true } : {}),
+      ...cloneDeep(param) // user param can override default
+    }
     const headers = {
       headers: {
         ...cloneDeep(params),
         ...cloneDeep(this.stackHeaders)
       },
-      params: {
-        ...cloneDeep(param)
-      }
+      params: queryParams
     } || {}
 
     try {

lib/stack/deliveryToken/index.js

@@ -84,7 +84,7 @@ export function DeliveryToken (http, data = {}) {
      * client.stack().deliveryToken().create({ token })
      * .then((deliveryToken) => console.log(deliveryToken))
      */
-    this.create = create({ http: http })
+    this.create = create({ http: http, create_with_preview_token: true })
 
     /**
      * @description The ‘Get all deliveryToken’ request returns comprehensive information about all deliveryToken created in a stack.

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@contentstack/management",
-  "version": "1.21.1",
+  "version": "1.21.2",
   "description": "The Content Management API is used to manage the content of your Contentstack account",
   "main": "./dist/node/contentstack-management.js",
   "browser": "./dist/web/contentstack-management.js",

test/sanity-check/api/deliveryToken-test.js

@@ -24,6 +24,7 @@ describe('Delivery Token api Test', () => {
         expect(token.scope[0].environments[0].name).to.be.equal(createDeliveryToken.token.scope[0].environments[0])
         expect(token.scope[0].module).to.be.equal(createDeliveryToken.token.scope[0].module)
         expect(token.uid).to.be.not.equal(null)
+        expect(token.preview_token).to.be.not.equal(null)
         done()
       })
       .catch(done)
@@ -39,6 +40,7 @@ describe('Delivery Token api Test', () => {
         expect(token.scope[0].environments[0].name).to.be.equal(createDeliveryToken2.token.scope[0].environments[0])
         expect(token.scope[0].module).to.be.equal(createDeliveryToken2.token.scope[0].module)
         expect(token.uid).to.be.not.equal(null)
+        expect(token.preview_token).to.be.not.equal(null)
         done()
       })
       .catch(done)