docs/libs/typescript.js
function mark(markName) {
            if (enabled) {
                marks[markName] = ts.timestamp();
                counts[markName] = (counts[markName] || 0) + 1;
                profilerEvent(markName);
            }
        }
function mark(markName) {
            if (enabled) {
                marks[markName] = ts.timestamp();
                counts[markName] = (counts[markName] || 0) + 1;
                profilerEvent(markName);
            }
        }
function mark ( markName ) { if ( enabled ) { marks [ markName ] = ts . timestamp ( ) ; counts [ markName ] = ( counts [ markName ] || 0 ) + 1 ; profilerEvent ( markName ) ; } }
Marks a performance event.

@param markName The name of the mark.
Marks a performance event .