lib/internal/main/prof_process.js - external/github.com/v8/node - Git at Google

 'use strict';

 const {
   prepareMainThreadExecution,
   markBootstrapComplete
 } = require('internal/process/pre_execution');

 prepareMainThreadExecution();
 markBootstrapComplete();
 require('internal/v8_prof_processor');
	'use strict';

	const {
	prepareMainThreadExecution,
	markBootstrapComplete
	} = require('internal/process/pre_execution');

	prepareMainThreadExecution();
	markBootstrapComplete();
	require('internal/v8_prof_processor');