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denoland-deno/ext/web/README.md

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# deno web
**Implements timers, as well as the following APIs:**
- Event
- TextEncoder
- TextDecoder
- File (Spec: https://w3c.github.io/FileAPI)
_Note: Testing for text encoding is done via WPT in cli/._
## Usage Example
From javascript, include the extension's source:
```javascript
import * as infra from "ext:deno_web/00_infra.js";
import * as DOMException from "ext:deno_web/01_dom_exception.js";
import * as mimesniff from "ext:deno_web/01_mimesniff.js";
import * as event from "ext:deno_web/02_event.js";
import * as structuredClone from "ext:deno_web/02_structured_clone.js";
import * as timers from "ext:deno_web/02_timers.js";
import * as abortSignal from "ext:deno_web/03_abort_signal.js";
import * as globalInterfaces from "ext:deno_web/04_global_interfaces.js";
import * as base64 from "ext:deno_web/05_base64.js";
import * as streams from "ext:deno_web/06_streams.js";
import * as encoding from "ext:deno_web/08_text_encoding.js";
import * as file from "ext:deno_web/09_file.js";
import * as fileReader from "ext:deno_web/10_filereader.js";
import * as location from "ext:deno_web/12_location.js";
import * as messagePort from "ext:deno_web/13_message_port.js";
import * as compression from "ext:deno_web/14_compression.js";
import * as performance from "ext:deno_web/15_performance.js";
import * as imageData from "ext:deno_web/16_image_data.js";
```
Then assign the properties below to the global scope like this example:
```javascript
Object.defineProperty(globalThis, "AbortController", {
value: abortSignal.AbortController,
enumerable: false,
configurable: true,
writable: true,
});
```
| Name | Value | enumerable | configurable | writeable |
| -------------------------------- | ---------------------------------------- | ---------- | ------------ | --------- |
| AbortController | abortSignal.AbortController | false | true | true |
| AbortSignal | abortSignal.AbortSignal | false | true | true |
| Blob | file.Blob | false | true | true |
| ByteLengthQueuingStrategy | streams.ByteLengthQueuingStrategy | | | |
| CloseEvent | event.CloseEvent | false | true | true |
| CompressionStream | compression.CompressionStream | false | true | true |
| CountQueuingStrategy | streams.CountQueuingStrategy | | | |
| CustomEvent | event.CustomEvent | false | true | true |
| DecompressionStream | compression.DecompressionStream | false | true | true |
| DOMException | DOMException | false | true | true |
| ErrorEvent | event.ErrorEvent | false | true | true |
| Event | event.Event | false | true | true |
| EventTarget | event.EventTarget | false | true | true |
| File | file.File | false | true | true |
| FileReader | fileReader.FileReader | false | true | true |
| MessageEvent | event.MessageEvent | false | true | true |
| Performance | performance.Performance | false | true | true |
| PerformanceEntry | performance.PerformanceEntry | false | true | true |
| PerformanceMark | performance.PerformanceMark | false | true | true |
| PerformanceMeasure | performance.PerformanceMeasure | false | true | true |
| PromiseRejectionEvent | event.PromiseRejectionEvent | false | true | true |
| ProgressEvent | event.ProgressEvent | false | true | true |
| ReadableStream | streams.ReadableStream | false | true | true |
| ReadableStreamDefaultReader | streams.ReadableStreamDefaultReader | | | |
| TextDecoder | encoding.TextDecoder | false | true | true |
| TextEncoder | encoding.TextEncoder | false | true | true |
| TextDecoderStream | encoding.TextDecoderStream | false | true | true |
| TextEncoderStream | encoding.TextEncoderStream | false | true | true |
| TransformStream | streams.TransformStream | false | true | true |
| MessageChannel | messagePort.MessageChannel | false | true | true |
| MessagePort | messagePort.MessagePort | false | true | true |
| WritableStream | streams.WritableStream | false | true | true |
| WritableStreamDefaultWriter | streams.WritableStreamDefaultWriter | | | |
| WritableStreamDefaultController | streams.WritableStreamDefaultController | | | |
| ReadableByteStreamController | streams.ReadableByteStreamController | | | |
| ReadableStreamBYOBReader | streams.ReadableStreamBYOBReader | | | |
| ReadableStreamBYOBRequest | streams.ReadableStreamBYOBRequest | | | |
| ReadableStreamDefaultController | streams.ReadableStreamDefaultController | | | |
| TransformStreamDefaultController | streams.TransformStreamDefaultController | | | |
| ImageData | imageData.ImageData | false | true | true |
| atob | base64.atob | true | true | true |
| btoa | base64.btoa | true | true | true |
| clearInterval | timers.clearInterval | true | true | true |
| clearTimeout | timers.clearTimeout | true | true | true |
| performance | performance.performance | true | true | true |
| reportError | event.reportError | true | true | true |
| setInterval | timers.setInterval | true | true | true |
| setTimeout | timers.setTimeout | true | true | true |
| structuredClone | messagePort.structuredClone | true | true | true |
Then from rust, provide:
`deno_web::deno_web::init_ops_and_esm::<Permissions>(Arc<BlobStore>, Option<Url>)`
in the `extensions` field of your `RuntimeOptions`
Where:
- `Permissions` is a struct implementing `deno_web::TimersPermission`
- `Arc<BlobStore>` can be provided by `Default::default()`
- `Option<Url>` provides an optional base URL for certain ops
## Dependencies
- **deno_webidl**: Provided by the `deno_webidl` crate
- **deno_console**: Provided by the `deno_console` crate
- **deno_url**: Provided by the `deno_url` crate
## Provided ops
Following ops are provided, which can be accessed through `Deno.ops`:
- op_base64_decode
- op_base64_encode
- op_base64_atob
- op_base64_btoa
- op_encoding_normalize_label
- op_encoding_decode_single
- op_encoding_decode_utf8
- op_encoding_new_decoder
- op_encoding_decode
- op_encoding_encode_into
- op_blob_create_part
- op_blob_slice_part
- op_blob_read_part
- op_blob_remove_part
- op_blob_create_object_url
- op_blob_revoke_object_url
- op_blob_from_object_url
- op_message_port_create_entangled
- op_message_port_post_message
- op_message_port_recv_message
- op_message_port_recv_message_sync
- op_compression_new
- op_compression_write
- op_compression_finish
- op_now
- op_defer
- op_readable_stream_resource_allocate
- op_readable_stream_resource_allocate_sized
- op_readable_stream_resource_get_sink
- op_readable_stream_resource_write_error
- op_readable_stream_resource_write_buf
- op_readable_stream_resource_write_sync
- op_readable_stream_resource_close
- op_readable_stream_resource_await_close
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