Symbol

readableStreamToBlob

function readableStreamToBlob(stream: ReadableStream): Promise<Blob>

Consume all data from a ReadableStream until it closes or errors.

Concatenate the chunks into a single Blob.

@param stream

The stream to consume.

@returns

A promise that resolves with the concatenated chunks as a Blob.

Referenced types

class ReadableStream<R = any>

This Streams API interface represents a readable stream of byte data. The Fetch API offers a concrete instance of a ReadableStream through the body property of a Response object.

MDN Reference

readonly locked: boolean
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[Symbol.asyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator<R>
cancel(reason?: any): Promise<void>
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getReader(options: { mode: 'byob' }): ReadableStreamBYOBReader
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getReader(): ReadableStreamDefaultReader<R>
getReader(options?: ReadableStreamGetReaderOptions): ReadableStreamReader<R>
pipeThrough<T>(transform: ReadableWritablePair<T, R>, options?: StreamPipeOptions): ReadableStream<T>
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pipeTo(destination: WritableStream<R>, options?: StreamPipeOptions): Promise<void>
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tee(): [ReadableStream<R>, ReadableStream<R>]
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values(options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator<R>

class Blob

A file-like object of immutable, raw data. Blobs represent data that isn't necessarily in a JavaScript-native format. The File interface is based on Blob, inheriting blob functionality and expanding it to support files on the user's system.

MDN Reference

readonly size: number
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readonly type: string
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arrayBuffer(): Promise<ArrayBuffer>
Returns a promise that resolves to the contents of the blob as an ArrayBuffer
bytes(): Promise<Uint8Array<ArrayBufferLike>>
Returns a promise that resolves to the contents of the blob as a Uint8Array (array of bytes) its the same as new Uint8Array(await blob.arrayBuffer())
formData(): Promise<FormData>
Read the data from the blob as a FormData object.
This first decodes the data from UTF-8, then parses it as a multipart/form-data body or a application/x-www-form-urlencoded body.
The type property of the blob is used to determine the format of the body.
This is a non-standard addition to the Blob API, to make it conform more closely to the BodyMixin API.
json(): Promise<any>
Read the data from the blob as a JSON object.
This first decodes the data from UTF-8, then parses it as JSON.
slice(start?: number, end?: number, contentType?: string): Blob
MDN Reference
stream(): ReadableStream<Uint8Array<ArrayBufferLike>>
Returns a readable stream of the blob's contents
text(): Promise<string>
Returns a promise that resolves to the contents of the blob as a string