evan-king / promise-apply-spec Goto Github PK
View Code? Open in Web Editor NEWa Promise utility function like `Promise.all` plus Ramda's `applySpec` for arbitrary raw data structures containing Promises and functions
License: MIT License
a Promise utility function like `Promise.all` plus Ramda's `applySpec` for arbitrary raw data structures containing Promises and functions
License: MIT License
Just out of curiosity I wonder why you made that decision. Why wait for the other Promises to become settled (or rejected) if their success value is thrown away anyway?
This behaviour is unlike Promise.all
or Promise.allSettled
which are the closest relatives to applySpec's unravel
I guess.
unravel({
name: (nr, s) =>
new Promise((resolve, reject) =>
setTimeout(resolve, 1000, s.toUpperCase())),
number: (nr, s) =>
Promise.reject(new Error("Stupid!"))
})([10, "test"])
.then(console.log, ex => console.error("here go the errors:", ex.message));
// 1 second elapses...
// -> here go the errors: Promises rejected:
// - Stupid!
Promise.all([
new Promise((resolve, reject) => setTimeout(reject, 1000, new Error("shite"))),
Promise.reject(new Error("Stupid!"))
]).then(console.log, ex => console.error("here you don't want to go:", ex.message))
// immediately
// -> here you don't want to go: Stupid!
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