Benchmark: Read property reflect vs getOwnPropertyDescriptor

Read property reflect vs getOwnPropertyDescriptor (version: 3)

Comparing performance of: requiredProp vs requiredProp_getPropertyOrDefault vs derived_requiredProp vs derived_requiredProp_getPropertyOrDefault vs requiredField vs requiredField_getPropertyOrDefault vs derived_requiredField vs derived_requiredField_getPropertyOrDefault vs derived_prop_reflectHas

Created: 2 years ago by: Registered User

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Script Preparation code:

 function getPropertyDescriptor(obj, property) {
     const descriptor = Object.getOwnPropertyDescriptor(obj, property);
     if (descriptor !== undefined)
         return descriptor;
     const proto = Object.getPrototypeOf(obj);
     if (proto === null)
         return undefined;
     return getPropertyDescriptor(proto, property);
 }

 function getPropertyOrDefault(obj, property, defaultValue) {
     const d = getPropertyDescriptor(obj, property);
     if (d) {
         if (Object.prototype.hasOwnProperty.call(d, "value"))
             return d.value;
         if (Object.prototype.hasOwnProperty.call(d, "get"))
             return d.get.call(obj);
     }
     return defaultValue;
 }

 function getPropertyOrDefault2(obj, property, defaultValue) {
   if (Reflect.has(obj, property)) return obj[property];
   return defaultValue;
 }

 class T {
     constructor() {
         this.requiredField = 1;
         this.undefinableField = undefined;
         this.m_requiredProp = 1;
         this.m_undefinableProp = undefined;
     }
     get requiredProp() {
         return this.m_requiredProp;
     }
     set requiredProp(value) {
         this.m_requiredProp = value;
     }
     get undefinableProp() {
         return this.m_undefinableProp;
     }
     set undefinableProp(value) {
         this.m_undefinableProp = value;
     }
 }
 var t = new T();
 t.requiredField = 1;
 t.requiredProp = 1;

 class D extends T {}
 var d = new D();
d.requiredField = 1;
 d.requiredProp = 1;

Tests:

requiredProp
const v = t.requiredProp;
requiredProp_getPropertyOrDefault
const v = getPropertyOrDefault(t, "requiredProp", 0);
derived_requiredProp
const v = d.requiredProp
derived_requiredProp_getPropertyOrDefault
const v = getPropertyOrDefault(d, "requiredProp", 0);
requiredField
const v = t.requiredField
requiredField_getPropertyOrDefault
const v = getPropertyOrDefault(t, "requiredField", 0);
derived_requiredField
const v = d.requiredField
derived_requiredField_getPropertyOrDefault
const v = getPropertyOrDefault(d, "requiredField", 0);
derived_prop_reflectHas
const v = getPropertyOrDefault2(d, "requiredField", 0);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
requiredProp
requiredProp_getPropertyOrDefault
derived_requiredProp
derived_requiredProp_getPropertyOrDefault
requiredField
requiredField_getPropertyOrDefault
derived_requiredField
derived_requiredField_getPropertyOrDefault
derived_prop_reflectHas

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.81 Safari/537.36 Edg/94.0.992.50

Browser/OS: Chrome 94 on Windows

View result in a separate tab

Test name	Executions per second
requiredProp	7844539.0 Ops/sec
requiredProp_getPropertyOrDefault	391684.3 Ops/sec
derived_requiredProp	7662200.0 Ops/sec
derived_requiredProp_getPropertyOrDefault	294174.0 Ops/sec
requiredField	7638949.0 Ops/sec
requiredField_getPropertyOrDefault	778359.7 Ops/sec
derived_requiredField	7745280.0 Ops/sec
derived_requiredField_getPropertyOrDefault	782821.4 Ops/sec
derived_prop_reflectHas	2008202.0 Ops/sec

Read property reflect vs getOwnPropertyDescriptor (version: 3)

Comparing performance of: requiredProp vs requiredProp_getPropertyOrDefault vs derived_requiredProp vs derived_requiredProp_getPropertyOrDefault vs requiredField vs requiredField_getPropertyOrDefault vs derived_requiredField vs derived_requiredField_getPropertyOrDefault vs derived_prop_reflectHas

Created: 2 years ago by: Registered User

Jump to the latest result

requiredProp

requiredProp_getPropertyOrDefault

derived_requiredProp

derived_requiredProp_getPropertyOrDefault

requiredField

requiredField_getPropertyOrDefault

derived_requiredField

derived_requiredField_getPropertyOrDefault

derived_prop_reflectHas

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A