clock delta elapsed high-resolution javascript node node-js nodejs now perf performance stdlib tic time timer toc util utilities utility utils

clock high-resolution javascript node node-js nodejs now perf performance stdlib tic time timer toc util utilities utility utils

epoch javascript node node-js nodejs now polyfill posix stdlib time timestamp ts unix util utilities utility utils

current date javascript node node-js nodejs now stdlib time util utilities utility utils year

assert assertion current date javascript node node-js nodejs now stdlib test time util utilities utility utils valid validate year