repl / eval: CommonJS globals leak into ESM modules #30842

• Version: v14.0.0-pre / cf5ce2c
• Platform: Linux lt2.cfware.com 5.3.11-200.fc30.x86_64 #1 SMP Tue Nov 12 19:25:25 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
• Subsystem: repl, CLI --eval and --print without --input-type=module

Create script.mjs:

console.log('script.mjs', typeof require);

Running node ./script.mjs or node --input-type=module --eval "import('./script.mjs')" both produce the correct output script.mjs undefined.

Now run import('./script.mjs') in repl, this produces output script.mjs function. Same for node --eval "import('./script.mjs')".

Using --print in place of --eval does not change typeof require.

CC @nodejs/modules-active-members