interface Tracing
Deno compatibility
This symbol is a non-functional stub.
The Tracing object is used to enable or disable tracing for sets of
categories. Instances are created using the
trace_events.createTracing() method.
When created, the Tracing object is disabled. Calling the
tracing.enable() method adds the categories to the set of enabled trace
event categories. Calling tracing.disable() will remove the categories
from the set of enabled trace event categories.
Properties #
readonly
#categories: stringA comma-separated list of the trace event categories covered by this
Tracing object.
Methods #
Disables this Tracing object.
Only trace event categories not covered by other enabled Tracing
objects and not specified by the --trace-event-categories flag
will be disabled.
import trace_events from 'node:trace_events';
const t1 = trace_events.createTracing({ categories: ['node', 'v8'] });
const t2 = trace_events.createTracing({ categories: ['node.perf', 'node'] });
t1.enable();
t2.enable();
// Prints 'node,node.perf,v8'
console.log(trace_events.getEnabledCategories());
t2.disable(); // Will only disable emission of the 'node.perf' category
// Prints 'node,v8'
console.log(trace_events.getEnabledCategories());