feat(nodejs): table.search functionality (#1341)

closes https://github.com/lancedb/lancedb/issues/1256

nodejs/lancedb/embedding/embedding_function.ts

@@ -19,6 +19,7 @@ import {
   FixedSizeList,
   Float,
   Float32,
+  type IntoVector,
   isDataType,
   isFixedSizeList,
   isFloat,
@@ -169,9 +170,7 @@ export abstract class EmbeddingFunction<
   /**
   Compute the embeddings for a single query
  */
-  async computeQueryEmbeddings(
-    data: T,
-  ): Promise<number[] | Float32Array | Float64Array> {
+  async computeQueryEmbeddings(data: T): Promise<IntoVector> {
     return this.computeSourceEmbeddings([data]).then(
       (embeddings) => embeddings[0],
     );

nodejs/lancedb/embedding/registry.ts

@@ -42,6 +42,7 @@ export class EmbeddingFunctionRegistry {
    * Register an embedding function
    * @param name The name of the function
    * @param func The function to register
+   * @throws Error if the function is already registered
    */
   register<T extends EmbeddingFunctionFactory = EmbeddingFunctionFactory>(
     this: EmbeddingFunctionRegistry,
@@ -89,6 +90,9 @@ export class EmbeddingFunctionRegistry {
     this.#functions.clear();
   }
 
+  /**
+   * @ignore
+   */
   parseFunctions(
     this: EmbeddingFunctionRegistry,
     metadata: Map<string, string>,