TURBO for Developers

PerformanceMetrics interface

Performance metrics and timing data

Signature:

export interface PerformanceMetrics

Property	Type	Description
blocking	BlockingMetrics	Main thread blocking metrics
custom	Record<string, number>	Custom user-defined metrics
javascript	JavaScriptMetrics	JavaScript execution time metrics
lastUpdated	number	Timestamp when metrics were last updated
memory	MemoryMetrics	Memory consumption metrics
rendering	RenderingMetrics	Rendering performance metrics
startTime	number	Timestamp when metrics collection started
totalTime	number	Total execution time in milliseconds