Deno.FsFile | Runtime APIs

Manual

Runtime APIs

Go to LatestShow Unstable API

Broadcast Channel

BroadcastChannel

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Cache API

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Deno.CronScheduleExpression

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StructuredSerializeOptions

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Transferable

structuredClone

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EventListenerOrEventListenerObject

Encoding API

TextEncoderEncodeIntoResult

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ES Modules

ImportMeta

Fetch API

Body

Deno.BasicAuth

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Deno.createHttpClient

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File System

Deno.WriteFileOptions

Deno.makeTempFileSync

Deno.readTextFileSync

Deno.writeTextFileSync

HTTP Server

Deno.HttpConn

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I/O

Intl

Intl.DateTimeFormatOptions

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Jupyter

Deno.jupyter

Deno.jupyter.DisplayOptions

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Deno.UdpListenOptions

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Deno.UnixConn

Deno.UnixConnectOptions

Deno.UnixListenOptions

Deno.networkInterfaces

Observability

PromiseRejectionEvent

PromiseRejectionEventInit

Performance

PerformanceMarkOptions

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performance

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Runtime Environment

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Deno.uid

Scheduling

VoidFunction

queueMicrotask

Streams API

ByteLengthQueuingStrategy

CountQueuingStrategy

PipeOptions

QueuingStrategy

QueuingStrategySizeCallback

ReadableByteStreamController

ReadableByteStreamControllerCallback

ReadableStream

ReadableStreamBYOBReadDoneResult

ReadableStreamBYOBReader

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ReadableStreamBYOBReadValueResult

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ReadableStreamDefaultController

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ReadableStreamDefaultReader

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ReadableStreamErrorCallback

Transformer

TransformStream

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WritableStreamDefaultControllerCloseCallback

WritableStreamDefaultControllerStartCallback

WritableStreamDefaultControllerWriteCallback

WritableStreamDefaultWriter

WritableStreamErrorCallback

ReadableStreamBYOBReadResult

ReadableStreamDefaultReadResult

Sub Process

Deno.UnstableRunOptions

Temporal

Temporal.PlainDateTime

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Temporal.PlainYearMonth

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Temporal.CalendarLike

Temporal.CalendarTypeToStringOptions

Temporal.ComparisonResult

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Temporal.DurationOptions

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Temporal.InstantToStringOptions

Temporal.LargestUnit

Temporal.MonthCodeOrMonthAndYear

Temporal.MonthOrMonthCode

Temporal.OffsetDisambiguationOptions

Temporal.PlainDateISOFields

Temporal.PlainDateLike

Temporal.PlainDateTimeISOFields

Temporal.PlainDateTimeLike

Temporal.PlainMonthDayLike

Temporal.PlainTimeISOFields

Temporal.PlainTimeLike

Temporal.PlainYearMonthLike

Temporal.PluralUnit

Temporal.RoundingMode

Temporal.RoundTo

Temporal.ShowCalendarOption

Temporal.SmallestUnit

Temporal.TimeUnit

Temporal.TimeZoneLike

Temporal.ToInstantOptions

Temporal.ToStringPrecisionOptions

Temporal.TotalUnit

Temporal.YearOrEraAndEraYear

Temporal.ZonedDateTimeAssignmentOptions

Temporal.ZonedDateTimeISOFields

Temporal.ZonedDateTimeLike

Temporal.ZonedDateTimeToStringOptions

Testing

Deno.TestStepDefinition

Timers

Typed Arrays

Web APIs

URL

URLPatternComponentResult

Web Crypto API

RsaHashedImportParams

RsaHashedKeyAlgorithm

RsaHashedKeyGenParams

HashAlgorithmIdentifier

Web File API

Web Sockets

Deno.UpgradeWebSocketOptions

Deno.WebSocketUpgrade

WebSocketStreamOptions

BinaryType

Deno.upgradeWebSocket

Web Storage API

Storage

localStorage

sessionStorage

Web Workers

AbstractWorkerEventMap

Worker

WorkerEventMap

WorkerOptions

WebAssembly

WebAssembly.CompileError

WebAssembly.Global

WebAssembly.Instance

WebAssembly.LinkError

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WebAssembly.Module

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WebAssembly.GlobalDescriptor

WebAssembly.MemoryDescriptor

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WebAssembly.compile

WebAssembly.compileStreaming

WebAssembly.instantiate

WebAssembly.instantiateStreaming

WebAssembly.validate

WebGPU

Deno.UnsafeWindowSurface

GPU

GPUComputePassEncoder

GPURenderBundleEncoder

GPUBindGroupDescriptor

GPUBindGroupEntry

GPUBindGroupLayoutDescriptor

GPUBindGroupLayoutEntry

GPUBlendComponent

GPUBlendState

GPUBufferBinding

GPUBufferBindingLayout

GPUBufferDescriptor

GPUCanvasConfiguration

GPUCanvasContext

GPUColorDict

GPUColorTargetState

GPUCommandBufferDescriptor

GPUCommandEncoderDescriptor

GPUCompilationInfo

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GPUComputePassDescriptor

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GPUComputePipelineDescriptor

GPUObjectDescriptorBase

GPUOrigin3DDict

GPUPipelineBase

GPUPipelineDescriptorBase

GPUPipelineLayoutDescriptor

GPUPrimitiveState

GPUProgrammablePassEncoder

GPUProgrammableStage

GPUQuerySetDescriptor

GPURenderBundleDescriptor

GPURenderBundleEncoderDescriptor

GPURenderEncoderBase

GPURenderPassColorAttachment

GPURenderPassDepthStencilAttachment

GPURenderPassDescriptor

GPURenderPassLayout

GPURenderPassTimestampWrites

GPURenderPipelineDescriptor

GPURequestAdapterOptions

GPUSamplerBindingLayout

GPUSamplerDescriptor

GPUShaderModuleDescriptor

GPUStencilFaceState

GPUStorageTextureBindingLayout

GPUTextureBindingLayout

GPUTextureDescriptor

GPUTextureViewDescriptor

GPUVertexAttribute

GPUVertexBufferLayout

GPUCompilationMessageType

GPUSamplerBindingType

GPUShaderStageFlags

GPUStencilOperation

GPUStorageTextureAccess

GPUTextureViewDimension

method Deno.FsFile.prototype.lockSync

lockSync(exclusive?: boolean): void

Synchronously acquire an advisory file-system lock synchronously for the file.

Parameters

optional

exclusive: boolean

Returns

void