Example:

import src/nodejs/jsperfhooks
requirePerfhooks()
mark()
clearMarks()
echo jsnow()

Lets

NODE_PERFORMANCE_GC_FLAGS_ALL_AVAILABLE_GARBAGE: cint
NODE_PERFORMANCE_GC_FLAGS_ALL_EXTERNAL_MEMORY: cint
NODE_PERFORMANCE_GC_FLAGS_CONSTRUCT_RETAINED: cint
NODE_PERFORMANCE_GC_FLAGS_FORCED: cint
NODE_PERFORMANCE_GC_FLAGS_NO: cint
NODE_PERFORMANCE_GC_FLAGS_SCHEDULE_IDLE: cint
NODE_PERFORMANCE_GC_FLAGS_SYNCHRONOUS_PHANTOM_PROCESSING: cint
NODE_PERFORMANCE_GC_INCREMENTAL: cint
NODE_PERFORMANCE_GC_MAJOR: cint
NODE_PERFORMANCE_GC_MINOR: cint
NODE_PERFORMANCE_GC_WEAKCB: cint

Procs

func clearMarks() {.importjs: "perf_hooks.performance.$1()", ...raises: [], tags: [].}: https://nodejs.org/api/perf_hooks.html#perf_hooks_performance_clearmarks_name
func clearMarks(name: cstring) {.importjs: "perf_hooks.performance.$1(#)", ...raises: [], tags: [].}: https://nodejs.org/api/perf_hooks.html#perf_hooks_performance_clearmarks_name
func importPerfhooks() {.importjs: "import * as perf_hooks from \'perf_hooks\'@", ...raises: [], tags: [].}: Alias for import * as module_name from 'module_name';. Must be called once before using the module
func jsnow(): cint {.importjs: "perf_hooks.performance.now()", ...raises: [], tags: [].}: https://nodejs.org/api/perf_hooks.html#perf_hooks_performance_now
func mark() {.importjs: "perf_hooks.performance.$1()", ...raises: [], tags: [].}: https://nodejs.org/api/perf_hooks.html#perf_hooks_performance_mark_name
func mark(name: cstring) {.importjs: "perf_hooks.performance.$1(#)", ...raises: [], tags: [].}: https://nodejs.org/api/perf_hooks.html#perf_hooks_performance_mark_name
func measure(name, startMark, endMark: cstring) {. importjs: "perf_hooks.performance.$1(#, #, #)", ...raises: [], tags: [].}: https://nodejs.org/api/perf_hooks.html#perf_hooks_performance_measure_name_startmark_endmark
func measure(name: cstring) {.importjs: "perf_hooks.performance.$1(#)", ...raises: [], tags: [].}: https://nodejs.org/api/perf_hooks.html#perf_hooks_performance_measure_name_startmark_endmark
func requirePerfhooks() {.importjs: "const perf_hooks = require(\'perf_hooks\')@", ...raises: [], tags: [].}: Alias for const module_name = require('module_name');. Must be called once before using the module