language service: Null is not removed from type using ?. operator #15885
Description
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Current behavior
Language service does not correctly remove null from types when using the ?. operator.
Minimal reproduction of the problem with instructions
-
Start with the
quickstartexample. -
Add
"strictNullChecks": trueto thetsconfig.jsonfile. -
To
AppComponentinapp.component.tsadd:
test: {a: number, b: number} | null = {
a: 1,
b: 2
}
- To the template in
app.component.tsadd:
{{test?.a}}
EXPECTED: No errors and the hover over a to show a member of the anonymous type defined in AppComponent
RECEIVED: A diagnostic Identifier 'a' is not defined.