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Angelos Chalaris
2020-09-15 16:28:04 +03:00
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snippets/pipeAsyncFunctions.md
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@ -5,9 +5,9 @@ tags: function,promise,intermediate
Performs left-to-right function composition for asynchronous functions.
Use `Array.prototype.reduce()` and the spread operator (`...`) to perform function composition using `Promise.then()`.
The functions can return a combination of normal values, `Promise`s or be `async`, returning through `await`.
All functions must accept a single argument.
- Use `Array.prototype.reduce()` and the spread operator (`...`) to perform function composition using `Promise.then()`.
- The functions can return a combination of normal values, `Promise`s or be `async`, returning through `await`.
- All functions must accept a single argument.
```js
const pipeAsyncFunctions = (...fns) => arg => fns.reduce((p, f) => p.then(f), Promise.resolve(arg));