fix(core): Support inserting dates to data store via the insert endpoint (#18404)

packages/@n8n/api-types/src/dto/data-store/add-data-store-rows.dto.ts

@@ -1,8 +1,11 @@
 import { z } from 'zod';
 import { Z } from 'zod-class';
 
-import { dataStoreColumnNameSchema } from '../../schemas/data-store.schema';
+import {
+	dataStoreColumnNameSchema,
+	dataStoreColumnValueSchema,
+} from '../../schemas/data-store.schema';
 
 export class AddDataStoreRowsDto extends Z.class({
-	data: z.array(z.record(dataStoreColumnNameSchema, z.any())),
+	data: z.array(z.record(dataStoreColumnNameSchema, dataStoreColumnValueSchema)),
 }) {}

packages/@n8n/api-types/src/index.ts

@@ -56,4 +56,5 @@ export {
 	type DataStoreRows,
 	type DataStoreListOptions,
 	type DataStoreUserTableName,
+	dateTimeSchema,
 } from './schemas/data-store.schema';

packages/@n8n/api-types/src/schemas/data-store.schema.ts

@@ -51,6 +51,15 @@ export type DataStoreListOptions = Partial<ListDataStoreQueryDto> & {
 	filter: { projectId: string };
 };
 
+export const dateTimeSchema = z
+	.string()
+	.datetime({ offset: true })
+	.transform((s) => new Date(s))
+	.pipe(z.date());
+
+// Dates are received as date strings and validated before insertion
+export const dataStoreColumnValueSchema = z.union([z.string(), z.number(), z.boolean(), z.null()]);
+
 export type DataStoreColumnJsType = string | number | boolean | Date;
 
 export type DataStoreRows = Array<Record<string, DataStoreColumnJsType | null>>;