[unenv-preset] Graduate experimental Node.js module flags to date-gated (2026-03-17)#12763
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We need to wait for the compat date to become nearer. |
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…ed (2026-03-17) The following flags are no longer experimental and are now automatically enabled for workers using nodejs_compat with a compatibility date of 2026-03-17 or later: perf_hooks, v8, tty, child_process, worker_threads, readline, and repl. Follows cloudflare/workerd#6135 which replaced $experimental with $impliedByAfterDate(name = "nodeJsCompat", date = "2026-03-17") for these flags.
… on newer compat dates When native perf_hooks is disabled but workerd provides a web-standard globalThis.performance (with addEventListener), unenv's polyfill defers to the native object instead of creating its own Performance instance. This leaves Node.js-specific properties like nodeTiming missing. Detect this case by checking for the __unenv__ marker and augment the native performance object with missing properties from the polyfill Performance prototype.
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Follows cloudflare/workerd#6135.
Graduate the remaining experimental
nodejs_compat-specific module flags in the unenv preset by replacing the"experimental"flag requirement with date-gated enablement at2026-03-17.Flags graduated
enable_nodejs_perf_hooks_moduleenable_nodejs_v8_moduleenable_nodejs_tty_moduleenable_nodejs_child_process_moduleenable_nodejs_worker_threads_moduleenable_nodejs_readline_moduleenable_nodejs_repl_moduleThese modules are now automatically enabled for workers using
nodejs_compatwith a compatibility date of2026-03-17or later. Each flag can still be explicitly enabled or disabled via the correspondingenable_/disable_compatibility flags without needing the"experimental"flag.