conventional-changelog-action/node_modules/wrappy
Conventional Changelog Action bf7e9cbfcd chore(release): v3.1.1 2020-07-13 17:58:28 +00:00
..
LICENSE chore(release): v3.1.1 2020-07-13 17:58:28 +00:00
README.md chore(release): v3.1.1 2020-07-13 17:58:28 +00:00
package.json chore(release): v3.1.1 2020-07-13 17:58:28 +00:00
wrappy.js chore(release): v3.1.1 2020-07-13 17:58:28 +00:00

README.md

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)