///
////declare function fnUnion(fn: (a: T) => T): void
////fnUnion(/*a*/a => a/*b*/);
goTo.select("a", "b");
edit.applyRefactor({
refactorName: "Extract Symbol",
actionName: "constant_scope_0",
actionDescription: "Extract to constant in enclosing scope",
newContent:
`declare function fnUnion(fn: (a: T) => T): void
const newLocal: (a: T) => T = a => a;
fnUnion(/*RENAME*/newLocal);`
});