feat: add embedchain javascript package (#576)

embedchain-js/embedchain/chunkers/PdfFile.ts

@@ -0,0 +1,26 @@
+import { RecursiveCharacterTextSplitter } from 'langchain/text_splitter';
+
+import { BaseChunker } from './BaseChunker';
+
+interface TextSplitterChunkParams {
+  chunkSize: number;
+  chunkOverlap: number;
+  keepSeparator: boolean;
+}
+
+const TEXT_SPLITTER_CHUNK_PARAMS: TextSplitterChunkParams = {
+  chunkSize: 1000,
+  chunkOverlap: 0,
+  keepSeparator: false,
+};
+
+class PdfFileChunker extends BaseChunker {
+  constructor() {
+    const textSplitter = new RecursiveCharacterTextSplitter(
+      TEXT_SPLITTER_CHUNK_PARAMS
+    );
+    super(textSplitter);
+  }
+}
+
+export { PdfFileChunker };