Function checkSpreadExpression

test/fixtures/snapshot/typescript.js:73332–73338

(node, checkMode)

            }
        }
        function checkSpreadExpression(node, checkMode) {
            if (languageVersion < 2 /* ScriptTarget.ES2015 */) {
                checkExternalEmitHelpers(node, compilerOptions.downlevelIteration ? 1536 /* ExternalEmitHelpers.SpreadIncludes */ : 1024 /* ExternalEmitHelpers.SpreadArray */);
            }
            var arrayOrIterableType = checkExpression(node.expression, checkMode);
            return checkIteratedTypeOrElementType(33 /* IterationUse.Spread */, arrayOrIterableType, undefinedType, node.expression);
        }
        function checkSyntheticExpression(node) {
            return node.isSpread ? getIndexedAccessType(node.type, numberType) : node.type;
        }