Set a default date for perf_hooks, v8, tty, child_process, worker_threads, readline, repl, and performance classes modules#6135
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Set a default enable date (2026-03-10) for the remaining experimental Node.js compatibility flags: perf_hooks, v8, tty, child_process, worker_threads, readline, and repl modules. Also graduate enable_global_performance_classes as implied by enableNodeJsPerfHooksModule. Similar to #5880 and #5567, these flags are replaced from $experimental to $impliedByAfterDate so they become automatically enabled for workers with nodejs_compat and a compatibility date >= 2026-03-10.
anonrig
approved these changes
Feb 23, 2026
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Summary
nodejs_compat-specific module flags by replacing$experimentalwith$impliedByAfterDate(name = "nodeJsCompat", date = "2026-03-10")enable_global_performance_classesas implied byenableNodeJsPerfHooksModulesince it is required for the perf_hooks module to work correctly"experimental"compat flag from affected test configsSimilar to #5880 and #5567.
Flags graduated
enable_nodejs_perf_hooks_moduleenable_global_performance_classesenable_nodejs_v8_moduleenable_nodejs_tty_moduleenable_nodejs_child_process_moduleenable_nodejs_worker_threads_moduleenable_nodejs_readline_moduleenable_nodejs_repl_module/cc @petebacondarwin @anonrig @jasnell