apex up doesnt support node 12

[omar-dulaimi]

Prerequisites

• I am running the latest version. (up upgrade)
• I searched to see if the issue already exists.
• I inspected the verbose debug output with the -v, --verbose flag.
• Are you an Up Pro subscriber?

Description

Hello,
I added new code to our backend and it contained the not so new private class fields. Everything worked fine locally, running the same runtime version.

Steps to Reproduce

using up v1.5.1
add any private class fields like:

class Test {
 #result;
constructor(result) {
this.#result = result;
}
}

deploy live
inspect with:
up logs

After a couple of hours debugging this, I had to refactor the class to the old syntax. and everything worked.

Hopefully we won't run into this problem again when we decide to upgrade to node12.

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[sobafuchs]

Did you set the following in your up.json?

 { "lambda": {"runtime":"nodejs12.x"} }

[omar-dulaimi]

I did but nothing worked unfortunately so I had to revert back to nodejs10.x