n8n-enterprise-unlocked/packages/nodes-base/nodes/Evaluation/methods/loadOptions.ts

import type { ILoadOptionsFunctions, INodePropertyOptions } from 'n8n-workflow';

import { getSheetHeaderRow } from '../../Google/Sheet/v2/methods/loadOptions';

export async function getSheetHeaderRowWithGeneratedColumnNames(
	this: ILoadOptionsFunctions,
): Promise<INodePropertyOptions[]> {
	const returnData = await getSheetHeaderRow.call(this);
	return returnData.map((column, i) => {
		if (column.value !== '') return column;
		const indexBasedValue = `col_${i + 1}`;
		return {
			name: indexBasedValue,
			value: indexBasedValue,
		};
	});
}