docs(skipContext): add the JSDoc

src/core/utils/skipContext.ts

@@ -1,5 +1,27 @@
 import type {AnyFunction} from '../types/utils';
 
+/**
+ * @param fetch fetch function
+ * @returns fetch function with the ignored query data source context and the query function context.
+ *
+ * @description
+ * The function is intended to be used with the `fetch` parameter of the query data source config.
+ * It is used to ignore the query data context and the query function context parameters.
+ *
+ * NOTE
+ * When passed directly to the `fetch` parameter, typescript fails to infer the types of the `DataSource` fields.
+ * It is better to define a constant first.
+ * @example
+ * function someFetchFunction(request: TRequest) {...}
+ *
+ * const fetchData = skipContext(someFetchFunction);
+ *
+ * const dataSource = makePlainQueryDataSource({
+ *   ...
+ *   fetch: fetchData,
+ *   ...
+ * })
+ */
 export const skipContext = <TFunc extends AnyFunction>(fetch: TFunc) => {
     return (_0: unknown, _1: unknown, ...args: Parameters<TFunc>): ReturnType<TFunc> => {
         return fetch(...args);