generateEmbedding static method

Future<List<double>> generateEmbedding(String text)

Generate embedding for a single text.

text - Text to embed

Returns List<double> - Embedding vector (768 dimensions)

Throws Exception if not initialized or generation fails

Implementation

static Future<List<double>> generateEmbedding(String text) async {
  if (!isInitialized()) {
    throw StateError('LiteRT embeddings not initialized. Call initialize() first.');
  }

  if (text.trim().isEmpty) {
    throw ArgumentError('Text must not be empty');
  }

  try {
    // Call JS function and get Float32Array
    final jsResult = await _generateEmbeddingJS(text.toJS).toDart;

    // Convert JS Float32Array to Dart List<double>
    final jsArray = jsResult as JSFloat32Array;
    final length = jsArray.length.toDartInt;
    final result = List<double>.filled(length, 0.0);

    for (int i = 0; i < length; i++) {
      result[i] = jsArray[i.toJS].toDartDouble;
    }

    return result;
  } catch (e) {
    throw Exception('Failed to generate embedding: $e');
  }
}