prelim refactor commit

tests/index.js

@@ -7,8 +7,9 @@ import * as array from './y-array.tests.js'
 import * as map from './y-map.tests.js'
 import * as text from './y-text.tests.js'
 import * as xml from './y-xml.tests.js'
+import * as perf from './perf.js'
 
 if (isBrowser) {
   log.createVConsole(document.body)
 }
-runTests({ deleteStore, map, array, text, xml })
+runTests({ deleteStore, map, array, text, xml, perf })

tests/perf.js

@@ -0,0 +1,99 @@
+import * as t from 'lib0/testing.js'
+
+class Item {
+  constructor (c) {
+    this.c = c
+  }
+}
+
+const objectsToCreate = 10000000
+
+export const testItemHoldsAll = tc => {
+  const items = []
+  for (let i = 0; i < objectsToCreate; i++) {
+    switch (i % 3) {
+      case 0:
+        items.push(new Item(i))
+        break
+      case 1:
+        items.push(new Item(i + ''))
+        break
+      case 2:
+        items.push(new Item({ x: i }))
+        break
+      default:
+        throw new Error()
+    }
+  }
+  const call = []
+  items.forEach(item => {
+    switch (item.c.constructor) {
+      case Number:
+        call.push(item.c + '')
+        break
+      case String:
+        call.push(item.c)
+        break
+      case Object:
+        call.push(item.c.x + '')
+        break
+      default:
+        throw new Error()
+    }
+  })
+}
+
+class CItem { }
+
+class CItemNumber {
+  constructor (i) {
+    this.c = i
+  }
+  toString () {
+    return this.c + ''
+  }
+}
+
+class CItemString {
+  constructor (s) {
+    this.c = s
+  }
+  toString () {
+    return this.c
+  }
+}
+
+class CItemObject {
+  constructor (o) {
+    this.c = o
+  }
+  toString () {
+    return this.c.x
+  }
+}
+
+/*
+
+export const testDifferentItems = tc => {
+  const items = []
+  for (let i = 0; i < objectsToCreate; i++) {
+    switch (i % 3) {
+      case 0:
+        items.push(new CItemNumber(i))
+        break
+      case 1:
+        items.push(new CItemString(i + ''))
+        break
+      case 2:
+        items.push(new CItemObject({ x: i }))
+        break
+      default:
+        throw new Error()
+    }
+  }
+  const call = []
+  items.forEach(item => {
+    call.push(item.toString())
+  })
+}
+*/