FunctionalComponent with array emits does not work as expected #2159
Description
Version
3.0.0
Reproduction link
Steps to reproduce
Pull linked commit, and run yarn test-dts
This is a problematic code
const Qux: FunctionalComponent<{}, ['foo', 'bar']> = (props, { emit }) => {
emit('foo') // OK
emit('foo', 1, 2) // OK
emit('bar') // TS2345: Argument of type '"bar"' is not assignable to parameter of type '"foo"'
}What is expected?
No compile error.
What is actually happening?
TS2345 error is reported
Below code works as expected, but I think ['foo', 'bar'] is more straightforward and preferable.
const Qux: FunctionalComponent<{}, ('foo' | 'bar')[]> = (props, { emit }) => {
...
}