Function mark

src/measure-performance.ts:16–21

* Marks a performance event, with the given markName.

(markName: string)

 * Marks a performance event, with the given markName.
 */
function mark(markName: string) {
    if (enabled) {
        marks.set(markName, timestamp());
        performance.mark(markName);
    }
}

/**
 * Adds a performance measurement with the specified name.