[Showcase] Add posters galore (react-admin) (mui#11939)

docs/src/pages/discover-more/showcase/Showcase.js

@@ -29,6 +29,17 @@ const styles = theme => ({
 });
 
 const appList = [
+  {
+    title: 'Posters Galore',
+    description:
+      'The admin of an imaginary poster shop, used as a demo for the react-admin framework. ' +
+      'Uses many material-ui components, including tables, forms, snackbars, buttons, and ' +
+      'theming. The UI is responsive. The code is open-source!',
+    image: '/static/images/showcase/posters-galore.jpg',
+    link: 'https://marmelab.com/react-admin-demo/',
+    source:
+      'https://github.com/marmelab/react-admin/tree/be23a1a8ebc4e2293b57898adcb2f359e836f0fd/examples/demo',
+  },
   {
     title: 'Trafikito',
     description:

packages/material-ui-lab/src/Slider/Slider.d.ts

@@ -1,20 +1,20 @@
-import * as React from "react";
-import { StandardProps } from "@material-ui/core";
-import { ButtonProps } from "@material-ui/core/Button";
-import { TransitionProps } from "react-transition-group/Transition";
-import { TransitionHandlerProps } from "@material-ui/core/transitions/transition";
+import * as React from 'react';
+import { StandardProps } from '@material-ui/core';
+import { ButtonProps } from '@material-ui/core/Button';
+import { TransitionProps } from 'react-transition-group/Transition';
+import { TransitionHandlerProps } from '@material-ui/core/transitions/transition';
 
 export interface SliderProps extends StandardProps<React.HTMLAttributes<HTMLDivElement>> {
-    disabled?: boolean;
-    reverse?: boolean;
-    vertical?: boolean;
-    max?: number;
-    min?: number;
-    step?: number;
-    value?: number;
-    onChange?: (event: React.ChangeEvent<{}>, value: number) => void;
-    onDragEnd?: (event: React.ChangeEvent<{}>) => void;
-    onDragStart?: (event: React.ChangeEvent<{}>) => void;
+  disabled?: boolean;
+  reverse?: boolean;
+  vertical?: boolean;
+  max?: number;
+  min?: number;
+  step?: number;
+  value?: number;
+  onChange?: (event: React.ChangeEvent<{}>, value: number) => void;
+  onDragEnd?: (event: React.ChangeEvent<{}>) => void;
+  onDragStart?: (event: React.ChangeEvent<{}>) => void;
 }
 
 declare const Slider: React.ComponentType<SliderProps>;

packages/material-ui-lab/src/Slider/index.d.ts

@@ -1,2 +1,2 @@
-export { default } from "./Slider";
-export * from "./Slider";
+export { default } from './Slider';
+export * from './Slider';

packages/material-ui/src/Tabs/Tabs.d.ts

@@ -8,7 +8,7 @@ export interface TabsProps
   action?: (actions: TabsActions) => void;
   centered?: boolean;
   children?: React.ReactNode;
-  component?: React.ReactType<TabsProps>,
+  component?: React.ReactType<TabsProps>;
   fullWidth?: boolean;
   indicatorColor?: 'secondary' | 'primary' | string;
   onChange?: (event: React.ChangeEvent<{}>, value: any) => void;

packages/material-ui/src/styles/withStyles.d.ts

@@ -38,7 +38,9 @@ export interface WithStylesOptions<ClassKey extends string = string>
 
 export type ClassNameMap<ClassKey extends string = string> = Record<ClassKey, string>;
 
-export type WithStyles<T extends string | StyleRules | StyleRulesCallback = string> = Partial<WithTheme> & {
+export type WithStyles<T extends string | StyleRules | StyleRulesCallback = string> = Partial<
+  WithTheme
+> & {
   classes: ClassNameMap<
     T extends string
       ? T