refactor: utilize type narrowing (#33075)

PR Close #33075
2019-10-09 17:17:52 +02:00
parent 1ae77da609
commit 6ab5f3648a
29 changed files with 73 additions and 80 deletions
--- a/packages/compiler-cli/src/ngtsc/annotations/src/directive.ts
+++ b/packages/compiler-cli/src/ngtsc/annotations/src/directive.ts
@ -271,7 +271,7 @@ export function extractQueryMetadata(
  } else if (typeof arg === 'string') {
    predicate = [arg];
  } else if (isStringArrayOrDie(arg, '@' + name)) {
-    predicate = arg as string[];
+    predicate = arg;
  } else {
    throw new FatalDiagnosticError(
        ErrorCode.VALUE_HAS_WRONG_TYPE, node, `@${name} predicate cannot be interpreted`);