arbitrary-emitter - npm Package Compare versions

Comparing version 0.7.1 to 0.7.2

arbitrary-emitter.js

 'use strict'
 
 function arbitrary () {
-  const links = new Map()
+  const listeners = new Map()
 
   function createNewLink (key) {
-    const link = new Set()
-    links.set(key, link)
+    const bindings = new Set()
+
+    const link = {
+      add (fn) {
+        bindings.add(fn)
+        let size = bindings.size
+        if (size === 1) {
+          link.launch0 = fn
+          link.launchX = function () {
+            fn.apply(fn, arguments[0])
+          }
+        } else if (size === 2) {
+          // link.launch0 = () => bindings.forEach(f => f())
+          link.launch0 = a => bindings.forEach(f => f(a))
+          link.launchX = function () {
+            let a = arguments[0]
+            bindings.forEach(f => f.apply(f, a))
+          }
+        }
+      },
+      rm (method) {
+        bindings.delete(method)
+        let size = bindings.size
+        if (size === 0) {
+          listeners.delete(key)
+        } else if (size === 1) {
+          let fn
+          bindings.forEach(f => {fn = f})
+          link.launch0 = fn
+          link.launchX = function () {
+            fn.apply(fn, arguments[0])
+          }
+        } else if (size === 2) {
+          // link.launch0 = () => bindings.forEach(f => f())
+          link.launch0 = a => bindings.forEach(f => f(a))
+          link.launchX = function () {
+            let a = arguments[0]
+            bindings.forEach(f => f.apply(f, a))
+          }
+        }
+      }
+    }
+
+    listeners.set(key, link)
     return link
   }
 
-  const apply = Function.prototype.apply
-
   return {
     on (key, method) {
-      const link = links.get(key) || createNewLink(key)
+      const link = listeners.get(key) || createNewLink(key)
       link.add(method)
@@ -21,3 +61,3 @@ let isSubscribed = true
         if (isSubscribed) {
-          link.delete(method)
+          link.rm(method)
           isSubscribed = false
@@ -29,8 +69,7 @@ }
     once (key, method) {
-      const link = links.get(key) || createNewLink(key)
+      const link = listeners.get(key) || createNewLink(key)
       link.add(fn)
-      const rm = () => link.delete(fn)
       function fn () {
-        rm()
         method(arguments)
+        link.rm(fn)
       }
@@ -40,3 +79,3 @@ },
     emit (key) {
-      const link = links.get(key)
+      const link = listeners.get(key)
       if (!link) return
@@ -46,13 +85,9 @@ const l = arguments.length
         case 1: {
-          link.forEach(fn => fn())
+          link.launch0()
           break
         }
         case 2: {
-          link.forEach(fn => fn(arguments[1]))
+          link.launch0(arguments[1])
           break
         }
-        case 3: {
-          link.forEach(fn => fn(arguments[1], arguments[2]))
-          break
-        }
         default: {
@@ -64,3 +99,3 @@ let l = arguments.length
           }
-          link.forEach(fn => apply.call(fn, fn, args))
+          link.launchX(args)
         }
@@ -72,6 +107,6 @@ }
       if (1 in arguments) {
-        let link = links.get(key)
-        if (link) link.delete(action)
+        let link = listeners.get(key)
+        if (link) link.rm(action)
       } else {
-        links.delete(key)
+        listeners.delete(key)
       }
@@ -78,0 +113,0 @@ }

package.json

 {
   "name": "arbitrary-emitter",
-  "version": "0.7.1",
+  "version": "0.7.2",
   "description": "Event emitter with Map/Set sugar",
@@ -5,0 +5,0 @@ "main": "arbitrary-emitter.js",

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Improved metrics

Total package byte prevSize

10369

increased by10.73%

Lines of code

198

increased by20.73%

No dependency changes