chore: update configuration and scripts for improved testing and build process

- Added new entries to .gitignore for compiled test artifacts.
- Removed jest.preset.js and updated jest.config files to streamline configuration.
- Updated package.json to reflect changes in Node.js version requirements and modified main module paths.
- Enhanced README with development instructions and updated Node.js version prerequisites.
- Deleted obsolete TypeScript configuration files and scripts related to bundling and testing.
- Introduced new sanity report scripts for better integration with Slack notifications.

Author: nadeem-cs

.gitignore

@@ -25,6 +25,10 @@ test-results/
 src/**/*.js
 src/**/*.js.map
 
+# Compiled test artifacts (use .ts source only)
+test/api/**/*.js
+test/api/**/*.js.map
+
 # Browser test bundle (generated)
 test/e2e/sdk-browser-bundle.js
 test/e2e/sdk-browser-bundle.js.map

README.md

@@ -9,7 +9,7 @@ The Typescript SDK can also be used to create Node.js and React native applicati
 
 ### Prerequisite
 
-You need Node.js version 4.4.7 or later installed to use the Contentstack JavaScript SDK.
+You need Node.js version 18 or later installed to use the Contentstack TypeScript SDK.
 
 ### Setup and Installation
 
@@ -214,6 +214,10 @@ const stack = contentstack.stack({
 
 See [@contentstack/delivery-sdk-persistence](https://www.npmjs.com/package/@contentstack/delivery-sdk-persistence) for options (`storeType`, `maxAge`, custom storage).
 
+### Development
+
+When contributing or running tests from the repository, run `npm run build` before running tests. The published package includes a pre-built `dist/` directory.
+
 ### Helpful Links
 
 - [Contentstack Website](https://www.contentstack.com)

config/tsconfig.cjs.json

@@ -7,8 +7,6 @@
  */
 export default {
   displayName: "browser-environment",
-  preset: "./jest.preset.js",
-  
   // ⚠️ CRITICAL: Use jsdom (browser) instead of node environment
   testEnvironment: "jest-environment-jsdom",
 

config/tsconfig.esm.json

@@ -1,7 +1,8 @@
 /* eslint-disable */
 export default {
   displayName: "contentstack-delivery",
-  preset: "./jest.preset.js",
+  testEnvironment: "node",
+  testMatch: ["**/__tests__/**/*.ts", "**/?(*.)+(spec|test).ts"],
   transform: {
     "^.+\\.[tj]s$": [
       "ts-jest",