Class TokenTextSplitter

Implementation of splitter which looks at tokens.

Hierarchy (view full)

TextSplitter
- TokenTextSplitter

Implements

TokenTextSplitterParams

Index

Constructors

Properties

allowedSpecial chunkOverlap chunkSize disallowedSpecial encodingName keepSeparator lengthFunction

Methods

createDocuments mergeSplits splitDocuments splitText transformDocuments splitOnSeparator

Constructors

constructor

new TokenTextSplitter(fields?): TokenTextSplitter
Parameters
- Optionalfields: Partial<TokenTextSplitterParams>
Returns TokenTextSplitter
Overrides TextSplitter.constructor
- Defined in libs/langchain-textsplitters/src/text_splitter.ts:738

Properties

allowedSpecial

allowedSpecial: string[] | "all"

chunkOverlap

chunkOverlap: number = 200

chunkSize

chunkSize: number = 1000

disallowedSpecial

disallowedSpecial: string[] | "all"

encodingName

encodingName: TiktokenEncoding

keepSeparator

keepSeparator: boolean = false

lengthFunction

lengthFunction: ((text: string) => number) | ((text: string) => Promise<number>)

Methods

createDocuments

createDocuments(texts, metadatas?, chunkHeaderOptions?): Promise<Document[]>
Parameters
- texts: string[]
- metadatas: Record<string, any>[] = []
- chunkHeaderOptions: TextSplitterChunkHeaderOptions = {}
Returns Promise<Document[]>
Inherited from TextSplitter.createDocuments
- Defined in libs/langchain-textsplitters/src/text_splitter.ts:75

mergeSplits

mergeSplits(splits, separator): Promise<string[]>
Parameters
- splits: string[]
- separator: string
Returns Promise<string[]>
Inherited from TextSplitter.mergeSplits
- Defined in libs/langchain-textsplitters/src/text_splitter.ts:184

splitDocuments

splitDocuments(documents, chunkHeaderOptions?): Promise<Document[]>
Parameters
- documents: Document[]
- chunkHeaderOptions: TextSplitterChunkHeaderOptions = {}
Returns Promise<Document[]>
Inherited from TextSplitter.splitDocuments
- Defined in libs/langchain-textsplitters/src/text_splitter.ts:167

splitText

splitText(text): Promise<string[]>
Parameters
- text: string
Returns Promise<string[]>
Overrides TextSplitter.splitText
- Defined in libs/langchain-textsplitters/src/text_splitter.ts:746

transformDocuments

transformDocuments(documents, chunkHeaderOptions?): Promise<Document[]>
Parameters
- documents: Document[]
- chunkHeaderOptions: TextSplitterChunkHeaderOptions = {}
Returns Promise<Document[]>
Inherited from TextSplitter.transformDocuments
- Defined in libs/langchain-textsplitters/src/text_splitter.ts:48

`Protected`splitOnSeparator

splitOnSeparator(text, separator): string[]
Parameters
- text: string
- separator: string
Returns string[]
Inherited from TextSplitter.splitOnSeparator
- Defined in libs/langchain-textsplitters/src/text_splitter.ts:57