20   const timer = setTimeout(common.mustCall(() => {  constant
23   timer.unref();
31   strictEqual(timer.refresh(), timer);
50   const timer = setUnrefTimeout(common.mustCall(() => {  constant
58   strictEqual(timer.refresh(), timer);
64   const timer = setTimeout(common.mustCall(() => {  constant
72   strictEqual(timer.refresh(), timer);
78   const timer = setTimeout(common.mustCall(() => {  constant
82         timer.refresh();
83         strictEqual(timer.hasRef(), true);
92   const timer = setInterval(common.mustCall(() => {  constant
95       clearInterval(timer);
103   strictEqual(timer.refresh(), timer);