Run results for: enum check (string vs. number vs. symbol)

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.3 Safari/605.1.15

Browser: Safari 18

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
string	103958.2 Ops/sec
number	224260.3 Ops/sec
symbol	210727.2 Ops/sec

Script Preparation code:

var STRING_UNDEFINED = "undefined"
var STRING_NULL = "null"
var STRING_BOOLEAN = "boolean"
var STRING_NUMBER = "number"
var STRING_BIGINT = "bigint"
var STRING_STRING = "string"
var STRING_SYMBOL = "symbol"
var STRING_OBJECT = "object"
var STRING_FUNCTION = "function"
var NUMBER_UNDEFINED = 0
var NUMBER_NULL = 1
var NUMBER_BOOLEAN = 2
var NUMBER_NUMBER = 3
var NUMBER_BIGINT = 4
var NUMBER_STRING = 5
var NUMBER_SYMBOL = 6
var NUMBER_OBJECT = 7
var NUMBER_FUNCTION = 8
var SYMBOL_UNDEFINED = Symbol.for("undefined")
var SYMBOL_NULL = Symbol.for("null")
var SYMBOL_BOOLEAN = Symbol.for("boolean")
var SYMBOL_NUMBER = Symbol.for("number")
var SYMBOL_BIGINT = Symbol.for("bigint")
var SYMBOL_STRING = Symbol.for("string")
var SYMBOL_SYMBOL = Symbol.for("symbol")
var SYMBOL_OBJECT = Symbol.for("object")
var SYMBOL_FUNCTION = Symbol.for("function")

var stringValues = Array(1000).fill([STRING_FUNCTION, () => "Leggo!"])
var numberValues = Array(1000).fill([NUMBER_FUNCTION, () => "Leggo!"])
var symbolValues = Array(1000).fill([SYMBOL_FUNCTION, () => "Leggo!"])

Tests:

string
const stringTypes = [] for (const [type] of stringValues) { switch (type) { case STRING_UNDEFINED: stringTypes.push("undefined") break case STRING_NULL: stringTypes.push("null") break case STRING_BOOLEAN: stringTypes.push("boolean") break case STRING_NUMBER: stringTypes.push("number") break case STRING_BIGINT: stringTypes.push("bigint") break case STRING_STRING: stringTypes.push("string") break case STRING_SYMBOL: stringTypes.push("symbol") break case STRING_OBJECT: stringTypes.push("object") break case STRING_FUNCTION: stringTypes.push("function") break } }
number
const numberTypes = [] for (const [type] of numberValues) { switch (type) { case NUMBER_UNDEFINED: numberTypes.push("undefined") break case NUMBER_NULL: numberTypes.push("null") break case NUMBER_BOOLEAN: numberTypes.push("boolean") break case NUMBER_NUMBER: numberTypes.push("number") break case NUMBER_BIGINT: numberTypes.push("bigint") break case NUMBER_STRING: numberTypes.push("string") break case NUMBER_SYMBOL: numberTypes.push("symbol") break case NUMBER_OBJECT: numberTypes.push("object") break case NUMBER_FUNCTION: numberTypes.push("function") break } }
symbol
const symbolTypes = [] for (const [type] of symbolValues) { switch (type) { case SYMBOL_UNDEFINED: symbolTypes.push("undefined") break case SYMBOL_NULL: symbolTypes.push("null") break case SYMBOL_BOOLEAN: symbolTypes.push("boolean") break case SYMBOL_NUMBER: symbolTypes.push("number") break case SYMBOL_BIGINT: symbolTypes.push("bigint") break case SYMBOL_STRING: symbolTypes.push("string") break case SYMBOL_SYMBOL: symbolTypes.push("symbol") break case SYMBOL_OBJECT: symbolTypes.push("object") break case SYMBOL_FUNCTION: symbolTypes.push("function") break } }