Function generateData

examples/worker-rendering/main.ts:267–295

(
  count: number, 
  dataType: DataType,
  onProgress?: (progress: number) => void
)

// ============================================================================

async function generateData(
  count: number, 
  dataType: DataType,
  onProgress?: (progress: number) => void
): Promise<DataPoint[] | OHLCDataPoint[]> {
  const chunkSize = 100000; // Generate in chunks to avoid blocking
  const chunks: Array<DataPoint[] | OHLCDataPoint[]> = [];
  
  for (let i = 0; i < count; i += chunkSize) {
    const currentChunkSize = Math.min(chunkSize, count - i);
    
    // Generate chunk
    const chunk = generateChunk(i, currentChunkSize, dataType);
    chunks.push(chunk);
    
    // Update progress
    if (onProgress) {
      onProgress((i + currentChunkSize) / count);
    }
    
    // Yield to event loop every chunk
    if (i + chunkSize < count) {
      await new Promise(resolve => setTimeout(resolve, 0));
    }
  }
  
  // Type assertion is safe because all chunks are guaranteed to be the same type
  return chunks.flat() as DataPoint[] | OHLCDataPoint[];
}

function generateChunk(
  startIndex: number,