devex: Add Storybook for component development (#2556)

Adds Storybook in preparation for UI component refactoring.

.vscode/extensions.json

@@ -7,6 +7,7 @@
     "redhat.vscode-yaml",
     "streetsidesoftware.code-spell-checker",
     "ms-python.black-formatter",
-    "ms-python.pylint"
+    "ms-python.pylint",
+    "unifiedjs.vscode-mdx"
   ]
 }

frontend/.dockerignore

@@ -1 +1,2 @@
 node_modules/
+src/stories

frontend/.eslintrc.js

@@ -12,6 +12,7 @@ module.exports = {
     "plugin:import-x/recommended",
     "plugin:wc/recommended",
     "plugin:lit/recommended",
+    "plugin:storybook/recommended",
     "prettier",
   ],
   plugins: ["@typescript-eslint", "lit"],

frontend/.gitignore

@@ -27,3 +27,5 @@ custom-elements.json
 /test-results/
 /playwright-report/
 /playwright/.cache/
+
+*storybook.log

frontend/.storybook/main.ts

@@ -0,0 +1,107 @@
+import path from "path";
+
+import type { StorybookConfig } from "@storybook/web-components-webpack5";
+import type { WebpackConfiguration } from "webpack-dev-server";
+
+const config: StorybookConfig = {
+  stories: ["../src/**/*.mdx", "../src/**/*.stories.@(js|jsx|mjs|ts|tsx)"],
+  addons: [
+    "@storybook/addon-webpack5-compiler-swc",
+    "@storybook/addon-essentials",
+    {
+      name: "@storybook/addon-styling-webpack",
+      options: {
+        // TODO Consolidate with webpack.config.js
+        rules: [
+          {
+            // Global styles and assets, like fonts and Shoelace,
+            // that get added to document styles
+            test: /\.css$/,
+            sideEffects: true,
+            include: [
+              path.resolve(__dirname, "../src"),
+              path.resolve(
+                __dirname,
+                "../node_modules/@shoelace-style/shoelace",
+              ),
+            ],
+            exclude: /\.stylesheet\.css$/,
+            use: [
+              require.resolve("style-loader"),
+              {
+                loader: require.resolve("css-loader"),
+                options: {
+                  importLoaders: 1,
+                },
+              },
+              {
+                loader: require.resolve("postcss-loader"),
+                options: {
+                  implementation: require.resolve("postcss"),
+                },
+              },
+            ],
+          },
+          {
+            // CSS loaded as raw string and used as a CSSStyleSheet
+            test: /\.stylesheet\.css$/,
+            sideEffects: true,
+            type: "asset/source",
+            use: [
+              {
+                loader: require.resolve("postcss-loader"),
+                options: {
+                  implementation: require.resolve("postcss"),
+                },
+              },
+            ],
+          },
+        ],
+      },
+    },
+  ],
+  framework: {
+    name: "@storybook/web-components-webpack5",
+    options: {},
+  },
+  webpackFinal: async (config) => {
+    // Show eslint errors from Storybook files in Webpack overlay
+    const ESLintPlugin = require("eslint-webpack-plugin");
+
+    config.plugins?.push(
+      new ESLintPlugin({
+        files: ["**/stories/*.ts", "**/.storybook/*.ts"],
+      }),
+    );
+
+    // Watch for changes to custom-elements.json to re-render element
+    // attributes whenever the custom elements manifest is generated
+    (config as WebpackConfiguration).devServer = {
+      watchFiles: ["**/custom-elements.json"],
+    };
+
+    return config;
+  },
+  swc: {
+    jsc: {
+      parser: {
+        syntax: "typescript",
+        decorators: true,
+      },
+      // TODO Consolidate with tsconfig.json
+      transform: {
+        useDefineForClassFields: false,
+      },
+      baseUrl: path.resolve(__dirname, ".."),
+      // TODO Consolidate with tsconfig.json
+      paths: {
+        "@/*": ["./src/*"],
+        "~assets/*": ["./assets/src/*"],
+      },
+    },
+  },
+  core: {
+    disableTelemetry: true,
+  },
+};
+export default config;

frontend/.storybook/preview.ts

@@ -0,0 +1,25 @@
+import "../src/global";
+
+import {
+  setCustomElementsManifest,
+  type Preview,
+} from "@storybook/web-components";
+
+import customElements from "../src/__generated__/custom-elements.json";
+
+// Automatically document component properties
+setCustomElementsManifest(customElements);
+
+const preview: Preview = {
+  parameters: {
+    actions: { argTypesRegex: "^on[A-Z].*" },
+    controls: {
+      matchers: {
+        color: /(background|color)$/i,
+        date: /Date$/i,
+      },
+    },
+  },
+};
+
+export default preview;

frontend/custom-elements-manifest.config.mjs

@@ -0,0 +1,18 @@
+export default {
+  /** Globs to analyze */
+  globs: ["src/**/*.ts"],
+  /** Globs to exclude */
+  exclude: ["__generated__", "__mocks__"],
+  /** Directory to output CEM to */
+  outdir: "src/__generated__",
+  /** Run in dev mode, provides extra logging */
+  // dev: true,
+  /** Run in watch mode, runs on file changes */
+  // watch: true,
+  /** Include third party custom elements manifests */
+  // dependencies: true,
+  /** Output CEM path to `package.json`, defaults to true */
+  packagejson: false,
+  /** Enable special handling for litelement */
+  litelement: true,
+};

frontend/docs/docs/develop/ui/components.md

@@ -56,11 +56,11 @@ class MyCustomComponent extends BtrixElement {
 }
 ```
 
-### VS Code Snippet
+## VS Code Snippet
 
 If developing with [Visual Studio Code](https://code.visualstudio.com/), you can generate boilerplate for a `BtrixElement` Browsertrix component by typing in `component` to any TypeScript file and selecting "Btrix Component". Hit ++tab++ to move your cursor between fillable fields in the boilerplate code.
 
-### Unit Testing
+## Unit Testing
 
 Unit test files live next to the component file and are suffixed with `.test` (ex: `my-custom-component.test.ts`).
 

frontend/docs/docs/develop/ui/storybook.md

@@ -0,0 +1,13 @@
+# Using Storybook
+
+[Storybook](https://storybook.js.org/) is a tool for documenting and building UI components in isolation. Component documentation is organized into ["stories"](https://storybook.js.org/docs/writing-stories) that show a variety of possible rendered states of a UI component.
+
+Browsertrix component stories live in `frontend/src/stories`. Component attributes that are public properties (i.e. defined with Lit `@property({ type: Type })`) or documented in a TSDoc comment will automatically appear in stories through the [Custom Elements Manifest](https://custom-elements-manifest.open-wc.org/analyzer/getting-started/) file.
+
+To develop using Storybook, run:
+
+```sh
+yarn storybook:watch
+```
+
+This will open Storybook in your default browser. Changes to Browsertrix components and stories wil automatically refresh the page.

frontend/docs/mkdocs.yml

@@ -94,6 +94,7 @@ nav:
       - UI Development:
         - develop/frontend-dev.md
         - develop/ui/components.md
+        - develop/ui/storybook.md
         - develop/localization.md
         - Design:
           - develop/ui/design-action-menus.md

frontend/package.json

@@ -47,6 +47,7 @@
     "eslint-import-resolver-typescript": "^3.6.1",
     "eslint-plugin-import-x": "4.5.1",
     "eslint-plugin-lit": "^1.11.0",
+    "eslint-plugin-storybook": "^0.12.0",
     "eslint-plugin-wc": "^2.0.4",
     "eslint-webpack-plugin": "^4.1.0",
     "fork-ts-checker-webpack-plugin": "^6.2.6",
@@ -110,19 +111,35 @@
     "format": "prettier --write .",
     "format:check": "prettier --check .",
     "localize:extract": "lit-localize extract && prettier --write xliff/*.xlf",
-    "localize:build": "lit-localize build"
+    "localize:build": "lit-localize build",
+    "cem": "custom-elements-manifest analyze",
+    "prestorybook": "yarn cem",
+    "prestorybook:build": "yarn cem",
+    "storybook": "storybook dev -p 6006",
+    "storybook:watch": "concurrently 'yarn cem --watch' 'yarn storybook'",
+    "storybook:build": "storybook build"
   },
   "devDependencies": {
+    "@custom-elements-manifest/analyzer": "^0.10.4",
     "@lit/localize-tools": "^0.8.0",
+    "@storybook/addon-essentials": "^8.6.12",
+    "@storybook/addon-styling-webpack": "^1.0.1",
+    "@storybook/addon-webpack5-compiler-swc": "^3.0.0",
+    "@storybook/blocks": "^8.6.12",
+    "@storybook/test": "^8.6.12",
+    "@storybook/web-components": "^8.6.12",
+    "@storybook/web-components-webpack5": "^8.6.12",
     "@types/webpack-bundle-analyzer": "^4.7.0",
     "@web/dev-server-esbuild": "^0.3.3",
     "@web/dev-server-import-maps": "^0.2.0",
     "@web/dev-server-rollup": "^0.6.1",
+    "concurrently": "^9.1.2",
     "husky": "^8.0.3",
     "lint-staged": "^13.1.0",
     "prettier-plugin-tailwindcss": "^0.5.12",
     "rollup-plugin-typescript-paths": "^1.4.0",
     "sinon": "^12.0.1",
+    "storybook": "^8.6.12",
     "ts-lit-plugin": "^2.0.1",
     "webpack-bundle-analyzer": "^4.10.1",
     "webpack-dev-server": "^5.2.0"

frontend/prettier.config.js

@@ -37,5 +37,11 @@ module.exports = {
         xmlSelfClosingSpace: false,
       },
     },
+    {
+      files: "**/*.mdx",
+      options: {
+        proseWrap: "always",
+      },
+    },
   ],
 };

frontend/src/components/ui/button.ts

@@ -12,12 +12,7 @@ import { tw } from "@/utils/tailwind";
 type Variant = "neutral" | "danger";
 
 /**
- * Custom styled button
- *
- * Usage example:
- * ```ts
- * <btrix-button>Click me</btrix-button>
- * ```
+ * Custom styled button.
  */
 @customElement("btrix-button")
 export class Button extends TailwindElement {

frontend/src/components/ui/table/table.ts

@@ -22,26 +22,6 @@ tableCSS.split("}").forEach((rule: string) => {
  * Low-level component for displaying content as a table.
  * To style tables, use TailwindCSS utility classes.
  *
- * @example Usage:
- * ```ts
- * <btrix-table>
- *   <btrix-table-head class="border-b">
- *     <btrix-table-header-cell class="border-r">col 1 </btrix-table-header-cell>
- *     <btrix-table-header-cell>col 2</btrix-table-header-cell>
- *   </btrix-table-head>
- *   <btrix-table-body>
- *     <btrix-table-row class="border-b">
- *       <btrix-table-cell class="border-r">row 1 col 1</btrix-table-cell>
- *       <btrix-table-cell>row 1 col 2</btrix-table-cell>
- *     </btrix-table-row>
- *     <btrix-table-row>
- *       <btrix-table-cellclass="border-r">row 2 col 1</btrix-table-cell>
- *       <btrix-table-cell>row 2 col 2</btrix-table-cell>
- *     </btrix-table-row>
- *   </btrix-table-body>
- * </btrix-table>
- * ```
- *
  * Table columns will be automatically sized according to its content.
  * To specify column size, use `grid-template-columns`.
  *

frontend/src/global.ts

@@ -0,0 +1,11 @@
+import "broadcastchannel-polyfill";
+import "construct-style-sheets-polyfill";
+import "./shoelace";
+import "./assets/fonts/Inter/inter.css";
+import "./assets/fonts/Recursive/recursive.css";
+import "./styles.css";
+
+import { theme } from "@/theme";
+
+// Make theme CSS available in document
+document.adoptedStyleSheets = [theme];

frontend/src/index.ts

@@ -1,4 +1,5 @@
 import "./utils/polyfills";
+import "./global";
 
 import { provide } from "@lit/context";
 import { localized, msg, str } from "@lit/localize";
@@ -14,15 +15,9 @@ import { until } from "lit/directives/until.js";
 import { when } from "lit/directives/when.js";
 import isEqual from "lodash/fp/isEqual";
 
-import "broadcastchannel-polyfill";
-import "construct-style-sheets-polyfill";
-import "./shoelace";
 import "./components";
 import "./features";
 import "./pages";
-import "./assets/fonts/Inter/inter.css";
-import "./assets/fonts/Recursive/recursive.css";
-import "./styles.css";
 
 import { viewStateContext } from "./context/view-state";
 import { OrgTab, RouteNamespace } from "./routes";
@@ -38,7 +33,6 @@ import AuthService, {
 import { BtrixElement } from "@/classes/BtrixElement";
 import type { NavigateEventDetail } from "@/controllers/navigate";
 import type { NotifyEventDetail } from "@/controllers/notify";
-import { theme } from "@/theme";
 import { type Auth } from "@/types/auth";
 import {
   translatedLocales,
@@ -53,9 +47,6 @@ import { AppStateService } from "@/utils/state";
 import { formatAPIUser } from "@/utils/user";
 import brandLockupColor from "~assets/brand/browsertrix-lockup-color.svg";
 
-// Make theme CSS available in document
-document.adoptedStyleSheets = [theme];
-
 type DialogContent = {
   label?: TemplateResult | string;
   body?: TemplateResult | string;

frontend/src/stories/Button.stories.ts

@@ -0,0 +1,86 @@
+import type { Meta, StoryObj } from "@storybook/web-components";
+import { html } from "lit";
+
+import { renderButton, type RenderProps } from "./Button";
+
+const meta = {
+  component: "btrix-button",
+  tags: ["autodocs"],
+  render: renderButton,
+  argTypes: {
+    type: {
+      control: { type: "select" },
+      options: ["button", "submit"] satisfies RenderProps["type"][],
+    },
+    variant: {
+      control: { type: "select" },
+      options: ["neutral", "danger"] satisfies RenderProps["variant"][],
+    },
+    size: {
+      control: { type: "select" },
+      options: ["x-small", "small", "medium"] satisfies RenderProps["size"][],
+    },
+  },
+  args: {
+    label: "Button",
+    filled: true,
+  },
+  parameters: {
+    options: {
+      showPanel: false,
+    },
+  },
+} satisfies Meta<RenderProps>;
+
+export default meta;
+type Story = StoryObj<RenderProps>;
+
+export const Raised: Story = {
+  args: {
+    raised: true,
+  },
+};
+
+export const Loading: Story = {
+  args: {
+    loading: true,
+  },
+};
+
+export const Variants: Story = {
+  render: () => html`
+    ${renderButton({
+      variant: "neutral",
+      label: "Neutral (Default)",
+      filled: true,
+    })}
+    ${renderButton({ variant: "danger", label: "Danger", filled: true })}
+  `,
+};
+
+export const Sizes: Story = {
+  render: () => html`
+    ${renderButton({
+      size: "x-small",
+      label: "X-Small",
+      filled: true,
+    })}
+    ${renderButton({
+      size: "small",
+      label: "Small",
+      filled: true,
+    })}
+    ${renderButton({
+      size: "medium",
+      label: "Medium (Default",
+      filled: true,
+    })}
+  `,
+};
+
+export const Link: Story = {
+  args: {
+    href: "https://webrecorder.net",
+    label: "Button Link",
+  },
+};

frontend/src/stories/Button.ts

@@ -0,0 +1,30 @@
+import { html } from "lit";
+import { ifDefined } from "lit/directives/if-defined.js";
+
+import type { Button } from "@/components/ui/button";
+
+import "@/components/ui/button";
+
+export type RenderProps = Button;
+
+export const renderButton = ({
+  variant,
+  filled,
+  label,
+  raised,
+  loading,
+  href,
+}: Partial<RenderProps>) => {
+  return html`
+    <btrix-button
+      variant=${ifDefined(variant)}
+      label=${ifDefined(label)}
+      href=${ifDefined(href)}
+      ?filled=${filled}
+      ?raised=${raised}
+      ?loading=${loading}
+    >
+      ${label}
+    </btrix-button>
+  `;
+};

frontend/src/stories/Intro.mdx

@@ -0,0 +1,28 @@
+import { Meta } from "@storybook/blocks";
+
+<Meta title="Introduction" />
+
+# Introduction
+
+{/* TODO Consolidate with storybook.md in frontend/docs */}
+
+Browsertrix component stories live in `frontend/src/stories`. Component
+attributes that are public properties (i.e. defined with Lit
+`@property({ type: Type })`) or documented in a TSDoc comment will automatically
+appear in stories through the
+[Custom Elements Manifest](https://custom-elements-manifest.open-wc.org/analyzer/getting-started/)
+file.
+
+## Troubleshooting
+
+**Component attributes aren't updating in Storybook**
+
+Ensure you're running Storybook with `yarn storybook:watch` instead of
+`yarn storybook`. The "watch" script automatically regenerates
+`custom-elements.json`, which is the source of element attributes documentation.
+
+## Storybook Docs
+
+- [How to write stories](https://storybook.js.org/docs/writing-stories/?renderer=web-components)
+- [About autodocs](https://storybook.js.org/docs/writing-docs/autodocs/?renderer=web-components)
+- [Configure Storybook](https://storybook.js.org/docs/configure/?renderer=web-components)

frontend/src/stories/Table.stories.ts

@@ -0,0 +1,31 @@
+import type { Meta, StoryObj } from "@storybook/web-components";
+
+import { defaultArgs, renderTable, type RenderProps } from "./Table";
+
+import type { Table as TableComponent } from "@/components/ui/table/table";
+
+const meta = {
+  component: "btrix-table",
+  subcomponents: {
+    TableRow: "btrix-table-row",
+  },
+  render: renderTable,
+  tags: ["autodocs"],
+  argTypes: {
+    columns: { table: { disable: true } },
+    rows: { table: { disable: true } },
+  },
+  args: defaultArgs,
+  parameters: {
+    options: {
+      showPanel: false,
+    },
+  },
+} satisfies Meta<RenderProps>;
+
+export default meta;
+type Story = StoryObj<TableComponent>;
+
+export const BasicTable: Story = {
+  args: {},
+};

frontend/src/stories/Table.ts

@@ -0,0 +1,81 @@
+import { html, type TemplateResult } from "lit";
+import { ifDefined } from "lit/directives/if-defined.js";
+
+import "@/components/ui/table";
+
+const columns = {
+  name: {
+    title: "Name",
+  },
+  email: {
+    title: "Email",
+  },
+  role: {
+    title: "Role",
+  },
+  remove: {
+    title: html`<span class="sr-only">Remove</span>`,
+    renderItem: () => html`<sl-icon name="trash3"></sl-icon>`,
+  },
+} satisfies RenderProps["columns"];
+const rows: { data: Omit<Record<keyof typeof columns, unknown>, "remove"> }[] =
+  [
+    {
+      data: {
+        name: "Alice",
+        email: "alice@example.com",
+        role: 40,
+      },
+    },
+    {
+      data: { name: "Bob", email: "bob@example.com", role: 20 },
+    },
+  ] satisfies RenderProps["rows"];
+
+export interface RenderProps {
+  columns: Record<
+    string,
+    {
+      title: string | TemplateResult;
+      classes?: string;
+      renderItem?: (data: Record<string, unknown>) => TemplateResult;
+    }
+  >;
+  rows: {
+    data: Record<string, unknown>;
+    classes?: string;
+  }[];
+}
+
+export const defaultArgs = { columns, rows } satisfies RenderProps;
+
+export const renderTable = ({ columns: headers, rows: items }: RenderProps) => {
+  return html`
+    <btrix-table>
+      <btrix-table-head>
+        ${Object.values(headers).map(
+          ({ title, classes }) => html`
+            <btrix-table-header-cell class=${ifDefined(classes)}>
+              ${title}
+            </btrix-table-header-cell>
+          `,
+        )}
+      </btrix-table-head>
+      <btrix-table-body>
+        ${items.map(
+          ({ classes, data }) => html`
+            <btrix-table-row class=${ifDefined(classes)}>
+              ${Object.entries(headers).map(
+                ([key, { renderItem }]) => html`
+                  <btrix-table-cell class=${ifDefined(classes)}>
+                    ${renderItem ? renderItem(data) : data[key]}
+                  </btrix-table-cell>
+                `,
+              )}
+            </btrix-table-row>
+          `,
+        )}
+      </btrix-table-body>
+    </btrix-table>
+  `;
+};

frontend/tsconfig.json

@@ -14,6 +14,7 @@
     "inlineSources": true,
     "skipLibCheck": true,
     "esModuleInterop": true,
+    "useDefineForClassFields": false,
     "plugins": [
       {
         "name": "ts-lit-plugin",