This story was originally published on HackerNoon at: https://hackernoon.com/a-5-year-old-could-follow-this-typescript-sdk-development-guide-part-3-making-test-apps. This is Part 3 of our SDK development series where we will dive into creating test apps for react, browser, node, and legacy node. Check more stories related to programming at: https://hackernoon.com/c/programming. You can also check exclusive content about #typescript, #node, #npm-package, #javascript, #web-development, #sdk-development, #how-to-create-testing-apps, #hackernoon-top-story, and more. This story was written by: @smy. Learn more about this writer by checking @smy's about page, and for more stories, please visit hackernoon.com. This is Part 3 of our SDK development series where we will dive into creating test apps for react, browser, node, and legacy node.