7$: Error if await or yield is used in parameter list

[strager]

await and yield expressions are not allowed in function or arrow function parameter lists. Error if one is seen.

Example:

async function f(x = await null) {}

[bruno-costanzo]

what are you looking for? that the function allow the await function or to parse it to avoid the error?

[strager]

what are you looking for? that the function allow the await function or to parse it to avoid the error?

I want quick-lint-js to report an error. Currently quick-lint-js reports no error. Example of what I expect:

async function f(x = await null) {}
                     ^^^^^ error: await is not allowed in parameter default values

await is already allowed inside the body of an async function. This task is about await specifically in the parameter list, which is disallowed per the language standard.