0.0.4 • Published 8 years ago
rightco v0.0.4
rightco
Wrap righto
in a Promise
,
for use as a replacement for co
.
Installation
npm install --save rightco righto
Note that righto
is a peer dependency.
Usage
rightco(function* () {
let foo = yield something;
let bar = yield somethingElse;
return {
foo,
bar,
};
})
.then((result) => {
// result: { foo, bar, }
})
.catch((err) => {
// err: any throw or reject within something() or somethingElse()
});
Where something
and somethingElse
are either:
a thenable,
or an errback.
As such use rightco
to run your generator functions,
where you need them to be wrapped in a Promise
.
thenable
A Promise
is a thenable.
let thenable = new Promise((resolve, reject) => {
// call either `resolve(result)` for success,
// or `reject(error)` for failure
});
errback
Any function which has a callback function as its last parameter; and this callback function takes an error as its first parameter, and results as subsequent parameters is an errback.
let errback = function(callback) {
// call either `callback(undefined, result)` for success,
// or `callback(error)` for failure
};
The latter is the more interesting use case,
as rightco
enables the use of generator functions to yield
a standard errback when wrapped with righto
:
yield righto(errback);
See the test spec files for detailed usage examples.
Author
Licence
GPL-3.0