“A single-threaded, non-blocking, asynchronous, concurrent programming language with many flexibilities”. This is how freeCodeCamp defines JavaScript. Sounds great, right? Well, read it again. JavaScript is supposed to be single-threaded and asynchronous simultaneously. Which, when you think about it, sounds like a contradiction.
Smartphones have advanced greatly since their introduction in the 2000s. From faster GPUs for gaming to advanced instrumentation, these devices are now more computer than phone. Given the limitations of simulators and the complexity of real devices, they've also become a challenge for app developers to test. Biometric authentication, a fast-growing smartphone technology, introduced testing challenges.