Asynchronous programming in JavaScript leverages features like callbacks, promises and async/await to sidestep this issue by allowing other code to run in the meantime.

Assuming the hypothetical "async" function is completely unmodifiable library code, what can I do in "myFunc" to ensure that "a" gets properly set to "step 2" before the function returns?

Learn how to use JavaScript’s fs library module to create, read, write, and stream common file types in the JavaScript runtimes Node, Deno, and Bun.