function

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