[DataGrid] Make more props readonly arrays instead of mutable arrays

Author: pcorpet

packages/x-data-grid/src/models/api/gridRowSelectionApi.ts

@@ -31,9 +31,9 @@ export interface GridRowSelectionApi {
   /**
    * Updates the selected rows to be those passed to the `rowIds` argument.
    * Any row already selected will be unselected.
-   * @param {GridRowId[]} rowIds The row ids to select.
+   * @param {readonly GridRowId[]} rowIds The row ids to select.
    */
-  setRowSelectionModel: (rowIds: GridRowId[]) => void;
+  setRowSelectionModel: (rowIds: readonly GridRowId[]) => void;
 }
 
 export interface GridRowMultiSelectionApi {

packages/x-data-grid/src/models/colDef/gridColDef.ts

@@ -134,7 +134,7 @@ export interface GridBaseColDef<R extends GridValidRowModel = GridValidRowModel,
   /**
    * The order of the sorting sequence.
    */
-  sortingOrder?: GridSortDirection[];
+  sortingOrder?: readonly GridSortDirection[];
   /**
    * If `true`, the column is resizable.
    * @default true
@@ -264,7 +264,7 @@ export interface GridBaseColDef<R extends GridValidRowModel = GridValidRowModel,
   /**
    * Allows setting the filter operators for this column.
    */
-  filterOperators?: GridFilterOperator<R, V, F>[];
+  filterOperators?: readonly GridFilterOperator<R, V, F>[];
   /**
    * The callback that generates a filtering function for a given quick filter value.
    * This function can return `null` to skip filtering for this value and column.
@@ -306,9 +306,9 @@ export interface GridActionsColDef<R extends GridValidRowModel = any, V = any, F
   /**
    * Function that returns the actions to be shown.
    * @param {GridRowParams} params The params for each row.
-   * @returns {React.ReactElement<GridActionsCellItemProps>[]} An array of [[GridActionsCell]] elements.
+   * @returns {readonly React.ReactElement<GridActionsCellItemProps>[]} An array of [[GridActionsCell]] elements.
    */
-  getActions: (params: GridRowParams<R>) => React.ReactElement<GridActionsCellItemProps>[];
+  getActions: (params: GridRowParams<R>) => readonly React.ReactElement<GridActionsCellItemProps>[];
 }
 
 /**

packages/x-data-grid/src/models/gridRowSelectionModel.ts

@@ -1,5 +1,5 @@
 import { GridRowId } from './gridRows';
 
-export type GridInputRowSelectionModel = GridRowId[] | GridRowId;
+export type GridInputRowSelectionModel = readonly GridRowId[] | GridRowId;
 
-export type GridRowSelectionModel = GridRowId[];
+export type GridRowSelectionModel = readonly GridRowId[];