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*   TokenTextSplitter

TokenTextSplitter
=================

Finally, `TokenTextSplitter` splits a raw text string by first converting the text into BPE tokens, then split these tokens into chunks and convert the tokens within a single chunk back into text.

    import { Document } from "langchain/document";import { TokenTextSplitter } from "langchain/text_splitter";const text = "foo bar baz 123";const splitter = new TokenTextSplitter({  encodingName: "gpt2",  chunkSize: 10,  chunkOverlap: 0,});const output = await splitter.createDocuments([text]);

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