///
//// var f4 = (x: T/**/ ) => {
//// }
// Turn off edit validation. We don't want semantic diagnostics to run until we explicit call it.
fs.diagnostics.setEditValidation(IncrementalEditValidation.None);
fs.goTo.marker();
// Replace the "T" type with the non-existent type 'V'.
fs.edit.backspace(1);
fs.edit.insert("A");
// Bring up completion to force a pull resolve. This will end up resolving several symbols and
// producing unreported diagnostics (i.e. that 'V' wasn't found).
fs.verify.completionListContains("T");
fs.verify.completionEntryDetailIs("T", "(type parameter) T in (x: any): void");
// There should now be a single error.
fs.verify.numberOfErrorsInCurrentFile(1);