in version require.extensions.hasOwnProperty is undefined

[hananyabeck]

• Version: 8.9.3
• Platform:
• Subsystem:

After i upgrade to 8.9.3
require.extensions.hasOwnProperty is undefined
node -e "console.log(require.extensions.hasOwnProperty)" = undefined

in version 6.10.3
i got
node -e "console.log(require.extensions.hasOwnProperty)" = [Function: hasOwnProperty]

[TimothyGu]

This is an intentional change. You should always use Object.prototype.hasOwnProperty.call(obj, propKey) for safety, regardless of what kind of object it is.

[evanlucas]

I'm going to go ahead and close this as it is not a bug since require.extensions is an object a null prototype.

Ref: https://github.com/nodejs/node/blob/master/lib/module.js#L88
Ref: https://github.com/nodejs/node/blob/master/lib/internal/module.js#L32

There is more information on why the change was made in #10789

Thanks!