I thought "module": "es2020" allowed top-level await. Did that change?

import() is in module: es2020, but top-level await hasn't technically been added to a latest-ratified standard. When it does, it will likely be ES2022.

In other words, it hit stage 4 this past year.

Proposed new error messages would be similar to:

• The module setting 'es2015' does not support top-level 'await' expressions. Consider switching to 'es2022'.
• The module setting 'node12' does not support top-level 'await' expressions. Consider switching to 'nodenext'.
• The target setting 'es5' does not support top-level 'await' expressions. Consider switching to 'es2017'.

Is there a situation to suggest esnext or system?

Is the same applicable for this message too?

Top-level 'for await' loops are only allowed when the 'module' option is set to 'es2022', 'esnext', 'system', or 'nodenext', and the 'target' option is set to 'es2017' or higher.

Changed to:

• The module setting '{0}' does not support top-level 'for await' expressions. Consider switching to '{1}'.

The target setting 'es5' does not support top-level 'await' expressions. Consider switching to 'es2017'.

I believe that unless you're using system for your module target, the target has to be es2022 or later. Very confusing, but someone else may be able to correct me.

This is the current check for the message.

(moduleKind !== ModuleKind.ES2022 && moduleKind !== ModuleKind.ESNext && moduleKind !== ModuleKind.System && !(moduleKind === ModuleKind.NodeNext && getSourceFileOfNode(node).impliedNodeFormat === ModuleKind.ESNext)) || languageVersion < ScriptTarget.ES2017

So if someone is using module: ES2015 and target:ES5, should they get two error messages?
(I'm not sure if this is a valid scenario or not 😅)

Based on the current error message, My understanding is

I'm not sure if you meant the target to be es2022 as the code only has till es2021

export const enum ScriptTarget {
        ES3 = 0,
        ES5 = 1,
        ES2015 = 2,
        ES2016 = 3,
        ES2017 = 4,
        ES2018 = 5,
        ES2019 = 6,
        ES2020 = 7,
        ES2021 = 8,
        ESNext = 99,
        JSON = 100,
        Latest = ESNext,
    }

This is really confusing indeed. 😅

TLA is actually allowed in only in esm mode nodenext files, since latest node allows TLA in esm - we have tests to that effect - a specialized error for cjs mode files would be good, though.