--use-strict flag doesn't apply strict mode to script

• Node 12.*:
• Windows 64bit, Debian 64bit:

The --use-strict flag doesn't apply strict mode to script.
reproduction:

echo a = 1 > test.js && node --use-strict test

expected behavior:
ReferenceError: a is not defined is thrown.
behavior:
script executes without any issue.

however it works as expected when node is started first and script is called from repl.
<12 versions aren't affected.

node --use-strict
Welcome to Node.js v12.12.0.
Type ".help" for more information.
> a = 1
Thrown:
ReferenceError: a is not defined
>

首先重现报告中的命令 node --use-strict test，并将其行为与文档中的 REPL 示例进行比较。跟踪 --use-strict 在脚本启动期间的应用方式；当脚本抛出预期的 ReferenceError，且现有的 REPL 行为仍然正确时，该 issue 即完成。