feat: Add proper Typescript support (#5251)

* TypeScript all the things (#5150)

* Add Typescript tooling via react-overlays

* Add @types/ via akx/autotypes

* Mostly mechanically merge JavaScript and TypeScript files

* Fix typings in all TS files

* BootstrapModalManager: add types + fix marging -> margin typo

* Amend test and build configuration

* Address some review comments

* Address more review comments

* Move simple-types-test into tests/ and fix things to have it typecheck

* Update dev deps for e.g. Eslint 7+ compat & fix type issues

* chore: fix types build output (#5204)

* Publish v1.1.0-rc.0

* fix up

* lint

* fix defaults

Co-authored-by: Aarni Koskela <akx@iki.fi>

.babelrc.js

@@ -30,6 +30,7 @@ module.exports = api => {
           removePropTypes: !dev,
         },
       ],
+      '@babel/preset-typescript',
     ],
     plugins: [env === 'test' && 'istanbul'].filter(Boolean),
   };

.eslintrc

@@ -1,11 +1,16 @@
 {
   "extends": [
-    "@react-bootstrap"
+    "@react-bootstrap",
+    "4catalyzer-typescript",
+    "prettier",
+    "prettier/react",
+    "prettier/@typescript-eslint"
   ],
   "plugins": [
     "prettier"
   ],
   "rules": {
-    "prettier/prettier": "error"
+    "import/extensions": "off",
+    "prettier/prettier": "warn"
   }
 }

.gitignore

@@ -90,3 +90,6 @@ typings/
 
 *~
 .DS_Store
+
+# Generated types
+/types

.mocharc.json

@@ -0,0 +1,3 @@
+{
+  "require": "test/server/babel-register.js"
+}

karma.conf.js

@@ -17,7 +17,7 @@ module.exports = (config) => {
       module: {
         rules: [
           {
-            test: /\.js$/,
+            test: /\.[tj]sx?$/,
             exclude: /node_modules/,
             use: {
               loader: 'babel-loader',
@@ -31,6 +31,7 @@ module.exports = (config) => {
       },
       resolve: {
         symlinks: false,
+        extensions: ['.js', '.jsx', '.ts', '.tsx'],
       },
       plugins: [
         new DefinePlugin({

package.json

@@ -1,6 +1,6 @@
 {
   "name": "react-bootstrap",
-  "version": "1.0.1",
+  "version": "1.1.0-rc.0",
   "description": "Bootstrap 4 components built with React",
   "repository": {
     "type": "git",
@@ -10,32 +10,31 @@
   "sideEffects": false,
   "main": "lib/cjs/index.js",
   "module": "lib/esm/index.js",
+  "types": "lib/esm/index.d.ts",
   "scripts": {
     "bootstrap": "yarn && yarn --cwd www",
     "build": "node tools/build.js",
     "build-docs": "yarn --cwd www build",
+    "build-types": "yarn tsc -d --emitDeclarationOnly --outDir types",
     "changelog": "conventional-changelog -p angular -i CHANGELOG.md -s",
-    "dtslint": "dtslint types --expectOnly",
-    "format": "eslint . --fix && npm run prettier -- --write",
-    "lint": "eslint . && npm run prettier -- -l",
     "deploy-docs": "yarn --cwd www deploy",
+    "format": "eslint --ext tsx --ext ts src --fix",
+    "lint": "eslint --ext tsx --ext ts src && tsc --noEmit",
     "prepublishOnly": "npm run build",
-    "prettier": "prettier \"types/**/*.{ts,tsx}\"",
     "release": "rollout",
     "start": "yarn --cwd www develop",
     "tdd": "karma start",
-    "test": "npm run lint && npm run dtslint && npm run test-browser && npm run test-node",
+    "test": "npm run lint && npm run test-browser && npm run test-node",
     "test-browser": "cross-env NODE_ENV=test karma start --single-run",
-    "test-node": "cross-env NODE_ENV=test-server mocha --require @babel/register test/server/*Spec.js"
+    "test-node": "cross-env NODE_ENV=test-server mocha test/server/*Spec.js"
   },
   "husky": {
     "hooks": {
       "pre-commit": "lint-staged"
     }
   },
   "lint-staged": {
-    "*.js": "eslint --fix",
-    "types/**/*.ts": "prettier --write"
+    "*.{js,ts,tsx}": "eslint --fix"
   },
   "prettier": {
     "singleQuote": true,
@@ -66,7 +65,7 @@
     "@babel/runtime": "^7.4.2",
     "@restart/context": "^2.1.4",
     "@restart/hooks": "^0.3.21",
-    "@types/react": "^16.9.23",
+    "@types/react": "^16.9.35",
     "classnames": "^2.2.6",
     "dom-helpers": "^5.1.2",
     "invariant": "^2.2.4",
@@ -79,11 +78,20 @@
   },
   "devDependencies": {
     "@4c/rollout": "^2.1.9",
+    "@4c/tsconfig": "^0.3.1",
+    "@babel/preset-typescript": "^7.9.0",
     "@babel/cli": "^7.10.4",
     "@babel/core": "^7.10.4",
     "@babel/register": "^7.10.4",
     "@react-bootstrap/babel-preset": "^1.2.0",
     "@react-bootstrap/eslint-config": "^1.3.2",
+    "@types/classnames": "^2.2.10",
+    "@types/invariant": "^2.2.33",
+    "@types/prop-types": "^15.7.3",
+    "@types/react-transition-group": "^4.2.4",
+    "@types/warning": "^3.0.0",
+    "@typescript-eslint/eslint-plugin": "^2.33.0",
+    "@typescript-eslint/parser": "^2.33.0",
     "babel-eslint": "^10.1.0",
     "babel-loader": "^8.1.0",
     "babel-plugin-istanbul": "^6.0.0",
@@ -98,6 +106,7 @@
     "enzyme": "^3.11.0",
     "enzyme-adapter-react-16": "^1.15.2",
     "eslint": "^7.4.0",
+    "eslint-config-4catalyzer-typescript": "^1.1.8",
     "eslint-import-resolver-node": "^0.3.4",
     "eslint-import-resolver-webpack": "^0.12.2",
     "eslint-plugin-import": "^2.22.0",

src/AbstractNav.js → src/AbstractNav.tsx

@@ -6,7 +6,9 @@ import useMergedRefs from '@restart/hooks/useMergedRefs';
 import NavContext from './NavContext';
 import SelectableContext, { makeEventKey } from './SelectableContext';
 import TabContext from './TabContext';
+import { BsPrefixRefForwardingComponent } from './helpers';
 
+// eslint-disable-next-line @typescript-eslint/no-empty-function
 const noop = () => {};
 
 const propTypes = {
@@ -28,7 +30,21 @@ const propTypes = {
   activeKey: PropTypes.any,
 };
 
-const AbstractNav = React.forwardRef(
+// TODO: is this correct?
+interface AbstractNavProps {
+  activeKey?: any;
+  as?: React.ElementType;
+  getControlledId?: any;
+  getControllerId?: any;
+  onKeyDown?: any;
+  onSelect?: any;
+  parentOnSelect?: any;
+  role?: string;
+}
+
+type AbstractNav = BsPrefixRefForwardingComponent<'ul', AbstractNavProps>;
+
+const AbstractNav: AbstractNav = React.forwardRef(
   (
     {
       // Need to define the default "as" during prop destructuring to be compatible with styled-components github.com/react-bootstrap/react-bootstrap/issues/3595
@@ -38,7 +54,7 @@ const AbstractNav = React.forwardRef(
       role,
       onKeyDown,
       ...props
-    },
+    }: AbstractNavProps,
     ref,
   ) => {
     // A ref and forceUpdate for refocus, b/c we only want to trigger when needed
@@ -58,15 +74,17 @@ const AbstractNav = React.forwardRef(
       getControllerId = tabContext.getControllerId;
     }
 
-    const listNode = useRef(null);
+    const listNode = useRef<HTMLElement>(null);
 
     const getNextActiveChild = (offset) => {
-      if (!listNode.current) return null;
+      const currentListNode = listNode.current;
+      if (!currentListNode) return null;
 
-      let items = qsa(listNode.current, '[data-rb-event-key]:not(.disabled)');
-      let activeChild = listNode.current.querySelector('.active');
+      const items = qsa(currentListNode, '[data-rb-event-key]:not(.disabled)');
+      const activeChild = currentListNode.querySelector<HTMLElement>('.active');
+      if (!activeChild) return null;
 
-      let index = items.indexOf(activeChild);
+      const index = items.indexOf(activeChild);
       if (index === -1) return null;
 
       let nextIndex = index + offset;
@@ -107,7 +125,7 @@ const AbstractNav = React.forwardRef(
 
     useEffect(() => {
       if (listNode.current && needsRefocusRef.current) {
-        let activeChild = listNode.current.querySelector(
+        const activeChild = listNode.current.querySelector<HTMLElement>(
           '[data-rb-event-key].active',
         );
 

src/AbstractNavItem.js → src/AbstractNavItem.tsx

@@ -6,6 +6,27 @@ import useEventCallback from '@restart/hooks/useEventCallback';
 import warning from 'warning';
 import NavContext from './NavContext';
 import SelectableContext, { makeEventKey } from './SelectableContext';
+import { BsPrefixRefForwardingComponent } from './helpers';
+
+// TODO: check this
+interface AbstractNavItemProps {
+  active?: boolean;
+  as: React.ElementType;
+  className?: string;
+  disabled?: boolean;
+  eventKey?: any; // TODO: especially fix this
+  href?: string;
+  role?: string;
+  id?: string;
+  tabIndex?: number;
+  onClick?: (e: any) => void;
+  onSelect?: (navKey: string, e: any) => void;
+}
+
+type AbstractNavItem = BsPrefixRefForwardingComponent<
+  'div',
+  AbstractNavItemProps
+>;
 
 const propTypes = {
   id: PropTypes.string,
@@ -28,18 +49,17 @@ const defaultProps = {
   disabled: false,
 };
 
-const AbstractNavItem = React.forwardRef(
+const AbstractNavItem: AbstractNavItem = React.forwardRef(
   (
     {
       active,
       className,
-      tabIndex,
       eventKey,
       onSelect,
       onClick,
       as: Component,
       ...props
-    },
+    }: AbstractNavItemProps,
     ref,
   ) => {
     const navKey = makeEventKey(eventKey, props.href);
@@ -73,7 +93,7 @@ const AbstractNavItem = React.forwardRef(
     }
 
     if (props.role === 'tab') {
-      props.tabIndex = isActive ? tabIndex : -1;
+      props.tabIndex = isActive ? props.tabIndex : -1;
       props['aria-selected'] = isActive;
     }
 

src/Accordion.js → src/Accordion.tsx

@@ -7,6 +7,24 @@ import AccordionToggle from './AccordionToggle';
 import SelectableContext from './SelectableContext';
 import AccordionCollapse from './AccordionCollapse';
 import AccordionContext from './AccordionContext';
+import {
+  BsPrefixPropsWithChildren,
+  BsPrefixRefForwardingComponent,
+  SelectCallback,
+} from './helpers';
+
+export interface AccordionProps
+  extends Omit<React.HTMLAttributes<HTMLElement>, 'onSelect'>,
+    BsPrefixPropsWithChildren {
+  activeKey?: string;
+  defaultActiveKey?: string;
+  onSelect?: SelectCallback;
+}
+
+type Accordion = BsPrefixRefForwardingComponent<'div', AccordionProps> & {
+  Toggle: typeof AccordionToggle;
+  Collapse: typeof AccordionCollapse;
+};
 
 const propTypes = {
   /** Set a custom element for this component */
@@ -22,8 +40,8 @@ const propTypes = {
   defaultActiveKey: PropTypes.string,
 };
 
-const Accordion = React.forwardRef((props, ref) => {
-  let {
+const Accordion = (React.forwardRef((props: AccordionProps, ref) => {
+  const {
     // Need to define the default "as" during prop destructuring to be compatible with styled-components github.com/react-bootstrap/react-bootstrap/issues/3595
     as: Component = 'div',
     activeKey,
@@ -36,25 +54,23 @@ const Accordion = React.forwardRef((props, ref) => {
     activeKey: 'onSelect',
   });
 
-  bsPrefix = useBootstrapPrefix(bsPrefix, 'accordion');
-
+  const finalClassName = classNames(
+    className,
+    useBootstrapPrefix(bsPrefix, 'accordion'),
+  );
   return (
-    <AccordionContext.Provider value={activeKey}>
-      <SelectableContext.Provider value={onSelect}>
-        <Component
-          ref={ref}
-          {...controlledProps}
-          className={classNames(className, bsPrefix)}
-        >
+    <AccordionContext.Provider value={activeKey || null}>
+      <SelectableContext.Provider value={onSelect || null}>
+        <Component ref={ref} {...controlledProps} className={finalClassName}>
           {children}
         </Component>
       </SelectableContext.Provider>
     </AccordionContext.Provider>
   );
-});
+}) as unknown) as Accordion;
 
+Accordion.displayName = 'Accordion';
 Accordion.propTypes = propTypes;
-
 Accordion.Toggle = AccordionToggle;
 Accordion.Collapse = AccordionCollapse;
 

src/AccordionCollapse.js → src/AccordionCollapse.tsx

@@ -1,8 +1,19 @@
 import React, { useContext } from 'react';
 import PropTypes from 'prop-types';
 
-import Collapse from './Collapse';
+import Collapse, { CollapseProps } from './Collapse';
 import AccordionContext from './AccordionContext';
+import { BsPrefixRefForwardingComponent } from './helpers';
+
+export interface AccordionCollapseProps
+  extends React.PropsWithChildren<CollapseProps> {
+  eventKey: string;
+}
+
+type AccordionCollapse = BsPrefixRefForwardingComponent<
+  'div',
+  AccordionCollapseProps
+>;
 
 const propTypes = {
   /**
@@ -14,8 +25,8 @@ const propTypes = {
   children: PropTypes.element.isRequired,
 };
 
-const AccordionCollapse = React.forwardRef(
-  ({ children, eventKey, ...props }, ref) => {
+const AccordionCollapse: AccordionCollapse = React.forwardRef<typeof Collapse>(
+  ({ children, eventKey, ...props }: AccordionCollapseProps, ref) => {
     const contextEventKey = useContext(AccordionContext);
 
     return (
@@ -24,7 +35,7 @@ const AccordionCollapse = React.forwardRef(
       </Collapse>
     );
   },
-);
+) as any;
 
 AccordionCollapse.propTypes = propTypes;
 AccordionCollapse.displayName = 'AccordionCollapse';

src/AccordionContext.js → src/AccordionContext.ts

@@ -1,6 +1,6 @@
 import React from 'react';
 
-const context = React.createContext(null);
+const context = React.createContext<string | null>(null);
 context.displayName = 'AccordionContext';
 
 export default context;