eventuate-once
Act once upon the next occurrence of an eventuate. Optionally act upon only the next matching occurrence.
example
var eventuate = once = var request = // once cbrequest // once promiserequest // will result in no actions because consumers are gone// (use "requireConsumers" to make this an error condition)request
api
var once =
once(eventuate [, cb])
Execute the optional cb
(if provided) one time on the next data payload from the eventuate
. This is like eventuate(cb)
except that it only happens once. In addition, returns a Promise
that resolves to the eventuate
data payload.
once.match(eventuate, filter [, cb])
Execute the optional cb
(if provided) one time on the next data payload from the eventuate
, for which a truthy value is returned from the filter
function. In addition, returns a Promise
that resolves to the matched eventuate
data payload.
The filter
argument should be a function with signature function (data)
. It will be passed all events produced by the eventuate
, and it should return a falsey value or truthy value. Upon returning a truthy value, no more events will be provided, and the callbacks/promise will be resolved.
testing
npm test [--dot | --spec] [--grep=pattern]
Specifying --dot
or --spec
will change the output from the default TAP style.
Specifying --grep
will only run the test files that match the given pattern.
coverage
npm run coverage [--html]
This will output a textual coverage report. Including --html
will also open
an HTML coverage report in the default browser.