Class CheerioWebBaseLoader

Deprecated

  • Import from "@langchain/community/document_loaders/web/cheerio" instead. This entrypoint will be removed in 0.3.0.

A class that extends the BaseDocumentLoader and implements the DocumentLoader interface. It represents a document loader for loading web-based documents using Cheerio.

Example

const loader = new CheerioWebBaseLoader("https:exampleurl.com");
const docs = await loader.load();
console.log({ docs });

Hierarchy (view full)

Implements

Constructors

constructor

Properties

caller selector? textDecoder? timeout webPath

Methods

load loadAndSplit scrape imports scrapeAll

Constructors

constructor

Properties

caller

caller: AsyncCaller

Optionalselector

selector?: SelectorType

OptionaltextDecoder

textDecoder?: TextDecoder

timeout

timeout: number

webPath

webPath: string

Methods

load

  • load(): Promise<Document<Record<string, any>>[]>

  • Extracts the text content from the loaded document using the selector and creates a Document instance with the extracted text and metadata. It returns an array of Document instances.

    Returns Promise<Document<Record<string, any>>[]>

    A Promise that resolves to an array of Document instances.

loadAndSplit

  • loadAndSplit(splitter?): Promise<Document<Record<string, any>>[]>

  • Parameters

    • Optionalsplitter: BaseDocumentTransformer<DocumentInterface<Record<string, any>>[], DocumentInterface<Record<string, any>>[]>

    Returns Promise<Document<Record<string, any>>[]>

    A Promise that resolves with an array of Document instances, each split according to the provided TextSplitter.

    Deprecated

    Use this.load() and splitter.splitDocuments() individually. Loads the documents and splits them using a specified text splitter.

scrape

  • scrape(): Promise<CheerioAPI>

  • Fetches the web document from the webPath and loads it using Cheerio. It returns a CheerioAPI instance.

    Returns Promise<CheerioAPI>

    A Promise that resolves to a CheerioAPI instance.

Staticimports

  • imports(): Promise<{
        load: ((content:
            | string
            | Buffer
            | AnyNode
            | AnyNode[], options?: null | CheerioOptions, isDocument?: boolean) => CheerioAPI);
    }>

  • A static method that dynamically imports the Cheerio library and returns the load function. If the import fails, it throws an error.

    Returns Promise<{
        load: ((content:
            | string
            | Buffer
            | AnyNode
            | AnyNode[], options?: null | CheerioOptions, isDocument?: boolean) => CheerioAPI);
    }>

    A Promise that resolves to an object containing the load function from the Cheerio library.

StaticscrapeAll

  • scrapeAll(urls, caller, timeout, textDecoder?, options?): Promise<CheerioAPI[]>

  • Fetches web documents from the given array of URLs and loads them using Cheerio. It returns an array of CheerioAPI instances.

    Parameters

    • urls: string[]

      An array of URLs to fetch and load.

    • caller: AsyncCaller
    • timeout: undefined | number
    • OptionaltextDecoder: TextDecoder
    • Optionaloptions: CheerioOptions

    Returns Promise<CheerioAPI[]>

    A Promise that resolves to an array of CheerioAPI instances.

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