--use-strict does not work since node 10 #39996

Version

v10.24.1

Platform

Linux LAPTOP 5.11.0-27-generic #29~20.04.1-Ubuntu SMP Wed Aug 11 15:58:17 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

Subsystem

No response

What steps will reproduce the bug?

$ cat file.js
a = 0;
console.log("strict mode not enabled");

$ node --use-strict file.js
strict mode not enabled

How often does it reproduce? Is there a required condition?

Reproduces for latest node releases for versions 10, 12, 14, 16

node/10.24.1
node/12.22.6
node/14.17.6
node/16.8.0

Works fine for node v8.17.0

What is the expected behavior?

ReferenceError: a is not defined should be thrown

What do you see instead?

The file is not run in strict mode.

Additional information

No response