73 lines
2.4 KiB
TypeScript
73 lines
2.4 KiB
TypeScript
import { INode, INodeData, INodeParams } from '../../../src/Interface'
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import { getBaseClasses } from '../../../src/utils'
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import { MarkdownTextSplitter, MarkdownTextSplitterParams } from 'langchain/text_splitter'
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import { NodeHtmlMarkdown } from 'node-html-markdown'
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class HtmlToMarkdownTextSplitter_TextSplitters implements INode {
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label: string
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name: string
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version: number
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description: string
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type: string
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icon: string
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category: string
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baseClasses: string[]
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inputs: INodeParams[]
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constructor() {
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this.label = 'HtmlToMarkdown Text Splitter'
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this.name = 'htmlToMarkdownTextSplitter'
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this.version = 1.0
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this.type = 'HtmlToMarkdownTextSplitter'
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this.icon = 'htmlToMarkdownTextSplitter.svg'
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this.category = 'Text Splitters'
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this.description = `Converts Html to Markdown and then split your content into documents based on the Markdown headers`
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this.baseClasses = [this.type, ...getBaseClasses(HtmlToMarkdownTextSplitter)]
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this.inputs = [
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{
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label: 'Chunk Size',
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name: 'chunkSize',
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type: 'number',
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default: 1000,
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optional: true
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},
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{
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label: 'Chunk Overlap',
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name: 'chunkOverlap',
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type: 'number',
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optional: true
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}
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]
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}
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async init(nodeData: INodeData): Promise<any> {
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const chunkSize = nodeData.inputs?.chunkSize as string
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const chunkOverlap = nodeData.inputs?.chunkOverlap as string
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const obj = {} as MarkdownTextSplitterParams
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if (chunkSize) obj.chunkSize = parseInt(chunkSize, 10)
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if (chunkOverlap) obj.chunkOverlap = parseInt(chunkOverlap, 10)
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const splitter = new HtmlToMarkdownTextSplitter(obj)
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return splitter
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}
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}
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class HtmlToMarkdownTextSplitter extends MarkdownTextSplitter implements MarkdownTextSplitterParams {
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constructor(fields?: Partial<MarkdownTextSplitterParams>) {
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{
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super(fields)
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}
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}
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splitText(text: string): Promise<string[]> {
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return new Promise((resolve) => {
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const markdown = NodeHtmlMarkdown.translate(text)
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super.splitText(markdown).then((result) => {
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resolve(result)
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})
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})
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}
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}
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module.exports = { nodeClass: HtmlToMarkdownTextSplitter_TextSplitters }
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