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DISABLE_THIRD_PARTY_CHECK=Package needs updating with node_modules Change-Id: I889f1b86c586e37307a3e13ad762aa56d1ece150 Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/1946468 Commit-Queue: Paul Lewis <aerotwist@chromium.org> Reviewed-by: Tim van der Lippe <tvanderlippe@chromium.org>
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
called = true
return cb.apply(this, arguments)
}
})
function printBoo () {
console.log('boo')
}
// has some rando property
printBoo.iAmBooPrinter = true
var onlyPrintOnce = once(printBoo)
onlyPrintOnce() // prints 'boo'
onlyPrintOnce() // does nothing
// random property is retained!
assert.equal(onlyPrintOnce.iAmBooPrinter, true)