ecmaVersion: 2022 allows top-level await in scripts and class field initializers

[mdjermanovic]

Acorn v8.4.0

7405bd1 enables the allowAwaitOutsideFunction option by default when ecmaVersion >= 2022. That was to support top-level await in ES2022, but it seems that the option allows more than it is allowed by the spec.

const acorn = require("acorn");

// doesn't throw, but it should?
acorn.parse("await foo();", { ecmaVersion: 2022, sourceType: "script" });

// doesn't throw, but it should?
acorn.parse("(class { x = await foo(); })", { ecmaVersion: 2022, sourceType: "module" });

[marijnh]

Could you take a look through attached patch to see if it agrees with how you'd expect the library to behave?

[mdjermanovic]

Looks good to me, thanks for the quick fix!