TypeScript gets into bad editing state with async arrow functions #37522
Description
This seems to be an issue with 3.8 and newer. 3.7.5 doesn't exhibit this behavior.
There's a couple of ways to observe this. First, try writing out the following code character-by-character.
let x = async () => {
}You'll get
let x = async () => {
~~~~~~~~
Cannot find name 'async'.
Alternatively, paste the full example into a buffer. Then erase the c in async.
let x = asyn () => {
}Give it a second, then add it back. TypeScript doesn't seem to refresh its semantic diagnostics for some reason.
You'll get
let x = async () => {
~~~~
Cannot find name 'asyn'.