Ayaz Hafiz 8be0972836 fix(language-service): properly evaluate types in comparable expressions (#36529)
This commit fixes how the language service evaluates the compatibility
of types to work with arbitrary union types. As a result, compatibility
checks are now more strict and can catch similarities or differences
more clearly.

```
number|string == string|null  // OK
number|string == number       // OK
number|string == null         // not comparable
number == string              // not comparable
```

Using Ivy as a backend should provide these diagnoses for free, but we
can backfill them for now.

Closes https://github.com/angular/vscode-ng-language-service/issues/723

PR Close #36529
2020-04-16 16:07:47 -04:00
2020-04-16 16:07:07 -04:00
2020-01-27 09:31:22 -08:00
2020-01-13 07:21:43 -08:00

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