chore: move toFloat32Array to core.ts

Author: manekinekko

src/core.ts

@@ -1282,6 +1282,27 @@ export const toBase64 = (str: string | null | undefined): string => {
   throw new OpenAIError('Cannot generate b64 string; Expected `Buffer` or `btoa` to be defined');
 };
 
+/**
+ * Converts a Base64 encoded string to a Float32Array.
+ * @param base64Str - The Base64 encoded string.
+ * @returns An Array of numbers interpreted as Float32 values.
+ */
+export const toFloat32Array = (base64Str: string): Array<number> => {
+  if (typeof Buffer !== 'undefined') {
+    // for Node.js environment
+    return Array.from(new Float32Array(Buffer.from(base64Str, 'base64').buffer));
+  } else {
+    // for legacy web platform APIs
+    const binaryStr = atob(base64Str);
+    const len = binaryStr.length;
+    const bytes = new Uint8Array(len);
+    for (let i = 0; i < len; i++) {
+      bytes[i] = binaryStr.charCodeAt(i);
+    }
+    return Array.from(new Float32Array(bytes.buffer));
+  }
+};
+
 export function isObj(obj: unknown): obj is Record<string, unknown> {
   return obj != null && typeof obj === 'object' && !Array.isArray(obj);
 }

src/resources/embeddings.ts

@@ -37,11 +37,8 @@ export class Embeddings extends APIResource {
       return base64Response._thenUnwrap((response) => {
         if (response && response.data) {
           response.data.forEach((embeddingBase64Obj) => {
-            console.log(embeddingBase64Obj);
             const embeddingBase64Str = embeddingBase64Obj.embedding as unknown as string;
-            embeddingBase64Obj.embedding = Array.from(
-              new Float32Array(Buffer.from(embeddingBase64Str, 'base64').buffer),
-            );
+            embeddingBase64Obj.embedding = Core.toFloat32Array(embeddingBase64Str);
           });
           Core.debug('response', 'Decoded embeddings:', response.data);
         }