Function checkNonNullAssertion

test/fixtures/snapshot/typescript.js:77346–77349

(node)

            return propagateOptionalTypeMarker(getNonNullableType(nonOptionalType), node, nonOptionalType !== leftType);
        }
        function checkNonNullAssertion(node) {
            return node.flags & 32 /* NodeFlags.OptionalChain */ ? checkNonNullChain(node) :
                getNonNullableType(checkExpression(node.expression));
        }
        function checkExpressionWithTypeArguments(node) {
            checkGrammarExpressionWithTypeArguments(node);
            var exprType = node.kind === 228 /* SyntaxKind.ExpressionWithTypeArguments */ ? checkExpression(node.expression) :