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In the previous post

JS Functional Concepts: Pipe and Compose

JoelBonetR Jan 2 3 min read

#javascript #webdev #programming #tutorial

I explained these concepts in a way that I felt "enough understandable" for a wide range of people, though I can be wrong because it's my point of view at the end, so I've decided to try and make Chat GPT to explain what it does.

The conversation went like that:

Me:
can you explain me the following function

export const pipeAsync: any =  (...fns: Promise<Function>[]) =>  (input: any) =>    fns.reduce((chain: Promise<Function>, func: Function | Promise<Function> | any) => chain.then(func), Promise.resolve(input));

Chat GPT:

This function is creating a utility function called "pipeAsync", which allows chaining multiple asynchronous functions together in a pipeline.

It takes a list of functions as input, passed as rest parameter, which are all wrapped inside a promise.

It returns a new function that takes an input value as an argument. This returned function uses the Array.prototype.reduce method to iterate over the array of functions, and calls each function in sequence, passing the result of the previous function call as input to the next function.

The reduce function starts with an initial value of Promise.resolve(input), which is the input passed to the returned function. This is the starting point of the pipeline.

The reduce function then calls the next function in the pipeline with the result of the previous function call, and this process continues for each function in the pipeline.

The result of the reduce function is a new promise that resolves with the final result of the pipeline.

The "pipeAsync" function allows you to chain together multiple asynchronous functions in a way that makes the code more readable and maintainable. It is similar to the "pipe" function from functional programming, but it's adapted to work with async/await.

While it is 100% accurate, the language and language resources it uses may require a bit of focus to understand in my opinion.

What do you think? Is it better explained by GPT or by flesh and bones people? Let me know in the comments!