once - npm Package Compare versions

Comparing version 1.1.1 to 1.2.0

once.js

@@ -13,8 +13,9 @@ module.exports = once
 function once (fn) {
-  var called = false
-  return function () {
-    if (called) return
-    called = true
+  var f = function () {
+    if (f.called) return
+    f.called = true
     return fn.apply(this, arguments)
   }
+  f.called = false
+  return f
 }

package.json

 {
   "name": "once",
-  "version": "1.1.1",
+  "version": "1.2.0",
   "description": "Run a function exactly one time",
@@ -5,0 +5,0 @@ "main": "once.js",

README.md

@@ -34,1 +34,16 @@ # once
 complicated as necessary.
+
+To check whether you function has been called, use `fn.called`:
+
+```javascript
+var once = require('once')
+
+function load (cb) {
+  cb = once(cb)
+  var stream = createStream()
+  stream.once('data', cb)
+  stream.once('end', function () {
+    if (!cb.called) cb(new Error('not found'))
+  })
+}
+```

test/once.js

@@ -11,5 +11,7 @@ var test = require('tap').test
   })
+  t.notOk(foo.called)
   for (var i = 0; i < 1E3; i++) {
     t.same(f, i === 0 ? 0 : 1)
     var g = foo.call(1, 1)
+    t.ok(foo.called)
     t.same(g, i === 0 ? 3 : undefined)
@@ -16,0 +18,0 @@ t.same(f, 1)

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Improved metrics

Total package byte prevSize

3434

increased by11.35%

Lines of code

37

increased by8.82%

Number of lines in readme file

48

increased by41.18%

No dependency changes