Symbol

RedisClient.lpushx

lpushx(key: string | Blob | ArrayBufferView<ArrayBufferLike>, value: string | Blob | ArrayBufferView<ArrayBufferLike>): Promise<number>

Prepend a value to a list, only if the list exists

@param key

The list key

@param value

The value to prepend

@returns

Promise that resolves with the length of the list after the push operation, or 0 if the list doesn't exist

Referenced types

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

type ArrayBufferView<TArrayBuffer extends ArrayBufferLike = ArrayBufferLike> = NodeJS.TypedArray<TArrayBuffer> | DataView<TArrayBuffer>