Function createNodeArray

test/fixtures/snapshot/typescript.js:22737–22771

(elements, hasTrailingComma)

        return factory;
        // @api
        function createNodeArray(elements, hasTrailingComma) {
            if (elements === undefined || elements === ts.emptyArray) {
                elements = [];
            }
            else if (ts.isNodeArray(elements)) {
                if (hasTrailingComma === undefined || elements.hasTrailingComma === hasTrailingComma) {
                    // Ensure the transform flags have been aggregated for this NodeArray
                    if (elements.transformFlags === undefined) {
                        aggregateChildrenFlags(elements);
                    }
                    ts.Debug.attachNodeArrayDebugInfo(elements);
                    return elements;
                }
                // This *was* a `NodeArray`, but the `hasTrailingComma` option differs. Recreate the
                // array with the same elements, text range, and transform flags but with the updated
                // value for `hasTrailingComma`
                var array_8 = elements.slice();
                array_8.pos = elements.pos;
                array_8.end = elements.end;
                array_8.hasTrailingComma = hasTrailingComma;
                array_8.transformFlags = elements.transformFlags;
                ts.Debug.attachNodeArrayDebugInfo(array_8);
                return array_8;
            }
            // Since the element list of a node array is typically created by starting with an empty array and
            // repeatedly calling push(), the list may not have the optimal memory layout. We invoke slice() for
            // small arrays (1 to 4 elements) to give the VM a chance to allocate an optimal representation.
            var length = elements.length;
            var array = (length >= 1 && length <= 4 ? elements.slice() : elements);
            ts.setTextRangePosEnd(array, -1, -1);
            array.hasTrailingComma = !!hasTrailingComma;
            aggregateChildrenFlags(array);
            ts.Debug.attachNodeArrayDebugInfo(array);
            return array;
        }
        function createBaseNode(kind) {
            return baseFactory.createBaseNode(kind);
        }