.. | ||
LICENSE | ||
package.json | ||
README.md | ||
wrappy.js |
wrappy
Callback wrapping utility
USAGE
var wrappy = require("wrappy")
// var wrapper = wrappy(wrapperFunction)
// make sure a cb is called only once
// See also: http://npm.im/once for this specific use case
var once = wrappy(function (cb) {
var called = false
return function () {
if (called) return
= true
called return cb.apply(this, arguments)
}
})
function printBoo () {
console.log('boo')
}// has some rando property
.iAmBooPrinter = true
printBoo
var onlyPrintOnce = once(printBoo)
onlyPrintOnce() // prints 'boo'
onlyPrintOnce() // does nothing
// random property is retained!
.equal(onlyPrintOnce.iAmBooPrinter, true) assert