fix(language-service): ignore hover of symbols not in the TypeScript program (#17969)

Fixes: #17965
2017-07-07 09:47:28 -06:00
parent cb16e9c747
commit 227dbbcfba
3 changed files with 112 additions and 4 deletions
--- a/packages/compiler-cli/src/diagnostics/symbols.ts
+++ b/packages/compiler-cli/src/diagnostics/symbols.ts
@ -322,7 +322,7 @@ export interface SymbolQuery {
  /**
   * Return the type symbol for the given static symbol.
   */
-  getTypeSymbol(type: StaticSymbol): Symbol;
+  getTypeSymbol(type: StaticSymbol): Symbol|undefined;

  /**
   * Return the members that are in the context of a type's template reference.