getSemanticDiagnostics

Gets warnings or errors indicating type system issues in a given file. Requesting semantic diagnostics may start up the type system and run deferred work, so the first call may take longer than subsequent calls.

Unlike the other get*Diagnostics functions, these diagnostics can potentially not include a reference to a source file. Specifically, the first time this is called, it will return global diagnostics with no associated location.

To contrast the differences between semantic and syntactic diagnostics, consider the sentence: "The sun is green." is syntactically correct; those are real English words with correct sentence structure. However, it is semantically invalid, because it is not true.

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