swc/crates/swc_ecma_lints/tests/pass/issue-3956/1/input.ts

function fn1({ x, y }: { x: string, y: string }): string {
    return x + y
}

function fn2({ x, y }: { x: string, y: string }): string {
    const fn3: ({ x, y }: { x: string, y: string }) => string = fn1
    return fn3({ x, y })
}