diff --git a/src/compiler/tracing.ts b/src/compiler/tracing.ts index 9498928f13873..f00207ae19842 100644 --- a/src/compiler/tracing.ts +++ b/src/compiler/tracing.ts @@ -101,22 +101,27 @@ namespace ts.tracing { * deprecate these operations. */ export function begin(phase: Phase, name: string, args?: object) { + if (!traceFd) return; writeEvent("B", phase, name, args); } export function end(phase: Phase, name: string, args?: object) { + if (!traceFd) return; writeEvent("E", phase, name, args); } export function instant(phase: Phase, name: string, args?: object) { + if (!traceFd) return; writeEvent("I", phase, name, args, `"s":"g"`); } // Used for "Complete" (ph:"X") events const completeEvents: { phase: Phase, name: string, args?: object, time: number }[] = []; export function push(phase: Phase, name: string, args?: object) { + if (!traceFd) return; completeEvents.push({ phase, name, args, time: 1000 * timestamp() }); } export function pop() { + if (!traceFd) return; Debug.assert(completeEvents.length > 0); const { phase, name, args, time } = completeEvents.pop()!; const dur = 1000 * timestamp() - time; @@ -125,7 +130,7 @@ namespace ts.tracing { function writeEvent(eventType: string, phase: Phase, name: string, args: object | undefined, extras?: string, time: number = 1000 * timestamp()) { - if (!traceFd) return; + Debug.assert(traceFd); Debug.assert(fs); performance.mark("beginTracing"); fs.writeSync(traceFd, `,\n{"pid":1,"tid":1,"ph":"${eventType}","cat":"${phase}","ts":${time},"name":"${name}"`);