Reserved Words for JavaScript Function Argument Names

Do not use any of the following words for JavaScript Function argument names.

This section applies to Function content items. See Functions.

• AbortController

• Blob

• Buffer

• ByteLengthQueuingStrategy

• __dirname

• __filename

• atob

• BroadcastChannel

• btoa

• clearImmediate

• clearInterval

• clearTimeout

• CompressionStream

• console

• CountQueuingStrategy

• Crypto

• crypto

• CryptoKey

• CustomEvent

• DecompressionStream

• Event

• EventTarget

• exports

• fetch

• FormData

• global

• Headers

• MessageChannel

• MessageEvent

• MessagePort

• module

• PerformanceEntry

• PerformanceMark

• PerformanceMeasure

• PerformanceObserver

• PerformanceObserverEntryList

• PerformanceResourceTiming

• performance

• process

• queueMicrotask

• ReadableByteStreamController

• ReadableStream

• ReadableStreamBYOBReader

• ReadableStreamBYOBRequest

• ReadableStreamDefaultController

• ReadableStreamDefaultReader

• require

• Response

• Request

• setImmediate

• setInterval

• setTimeout

• structuredClone

• SubtleCrypto

• DOMException

• TextDecoder

• TextDecoderStream

• TextEncoder

• TextEncoderStream

• TransformStream

• TransformStreamDefaultController

• URL

• URLSearchParams

• WebAssembly

• WritableStream

• WritableStreamDefaultController

• WritableStreamDefaultWriter

• this

• break

• case

• catch

• continue

• debugger

• default

• delete

• do

• else

• finally

• for

• function

• if

• in

• instanceof

• new

• return

• switch

• this

• throw

• try

• typeof

• var

• void

• while

• class

• const

• enum

• export

• extends

• import

• super

• implements

• interface

• let

• package

• private

• protected

• public

• static

• yield

• null