100% CPU usage for a long time after execution of the last statement

### Version v12.x-v20.x - severe, v8.x - v10.x - less severe but still visible ### Platform Darwin Andreys-MacBook-Pro.local 22.2.0 Darwin Kernel Version 22.2.0: Fri Nov 11 02:03:51 PST 2022; root:xnu-8792.61.2~4/RELEASE_ARM64_T6000 arm64 ### Subsystem suspect GC ### What steps will reproduce the bug? run first script in the gist: https://gist.github.com/sidorares/128160e6b3dea1da3ad45cd672651d2d#file-repro1-js After last line `console.log("done");` is executed CPU spikes to 100% and stays like that for about 5 minutes. In case of node v8 and v10 cpu spike is much shorter, 5-7 seconds. Bun.js executes the script almost instantly ### How often does it reproduce? Is there a required condition? Consistently reproduceable ### What is the expected behavior? Why is that the expected behavior? the script is expected to finish in sub second time ### What do you see instead? CPU spikes for 300-400 seconds which is unexpected for the workload ### Additional information The profiler only reports the code before the CPU spike, no high GC usage, the time after cpu spike is "unaccounted". ```js [Shared libraries]: ticks total nonlib name 98 0.0% /Users/laplace/.nvm/versions/node/v20.3.0/bin/node [JavaScript]: ticks total nonlib name 2 0.0% 0.0% JS: *parseLengthCodedInt /Users/laplace/tmp/2090/repro3.js:2014:24 [C++]: ticks total nonlib name [Summary]: ticks total nonlib name 2 0.0% 0.0% JavaScript 0 0.0% 0.0% C++ 66 0.0% 0.0% GC 98 0.0% Shared libraries 291682 100.0% Unaccounted [C++ entry points]: ticks cpp total name [Bottom up (heavy) profile]: Note: percentage shows a share of a particular caller in the total amount of its parent calls. Callers occupying less than 1.0% are not shown. ticks parent name 291682 100.0% UNKNOWN ```