Act once upon the next occurrence of an eventuate. Optionally act upon only the next matching occurrence.
var eventuate = require('eventuate'),
once = require('eventuate-once')
var request = eventuate()
// once cb
once(request, function (req) {
console.log(req)
})
request.produce({ url: '/index.html' })
// once promise
once(request).then(console.log)
request.produce({ url: '/README.md' })
// will result in no actions because consumers are gone
// (use "requireConsumers" to make this an error condition)
request.produce({ url: '/LICENSE' })
var once = require('eventuate-once')
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.
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.
npm test [--dot | --spec] [--phantom] [--grep=pattern]
Specifying --dot
or --spec
will change the output from the default TAP style.
Specifying --phantom
will cause the tests to run in the headless phantom browser instead of node.
Specifying --grep
will only run the test files that match the given pattern.
npm run browser-test
This will run the tests in all browsers (specified in .zuul.yml). Be sure to educate zuul first.
npm run coverage [--html]
This will output a textual coverage report. Including --html
will also open
an HTML coverage report in the default browser.