feat(client): ts-migrate client/utils/** (#42823)

* rename js files

* update imports and references

* migrate build-challenges

* migrate challenge-types

* migrate utils/index

* migrate state-management

* install @types/psl for tags

* migrate tags

* migrate tags.test

* migrate challenge-page-creator

* migrate utils/gatsby/index

* migrate layout-selector

* migrate layout-selector.test

* revert challenge-types

Curriculum can't handle TS or modules

* convert arrow functions

* revert build-challenges

* revert utils/gatsby/index

* revert challenge-page-creator

* revert challenge-types reference

* Delete state-management

Deleted in #42960

* Disable render-result-naming-convention (for now)

* update layout-selector.test comment

* reorder imports in build-challenges

* change ts-ignore to ts-expect-error

client/gatsby-config.js

@@ -4,7 +4,7 @@ const {
   buildChallenges,
   replaceChallengeNode,
   localeChallengesRootDir
-} = require('./utils/buildChallenges');
+} = require('./utils/build-challenges');
 
 const { clientLocale, curriculumLocale, homeLocation } = envData;
 

client/package-lock.json

@@ -4461,6 +4461,12 @@
       "resolved": "https://registry.npmjs.org/@types/prop-types/-/prop-types-15.7.3.tgz",
       "integrity": "sha512-KfRL3PuHmqQLOG+2tGpRO26Ctg+Cq1E01D2DMriKEATHgWLfeNDmq9e29Q9WIky0dQ3NPkd1mzYH8Lm936Z9qw=="
     },
+    "@types/psl": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/@types/psl/-/psl-1.1.0.tgz",
+      "integrity": "sha512-HhZnoLAvI2koev3czVPzBNRYvdrzJGLjQbWZhqFmS9Q6a0yumc5qtfSahBGb5g+6qWvA8iiQktqGkwoIXa/BNQ==",
+      "dev": true
+    },
     "@types/reach__router": {
       "version": "1.3.9",
       "resolved": "https://registry.npmjs.org/@types/reach__router/-/reach__router-1.3.9.tgz",

client/package.json

@@ -138,6 +138,7 @@
     "@types/loadable__component": "5.13.4",
     "@types/lodash-es": "4.17.4",
     "@types/prismjs": "1.16.6",
+    "@types/psl": "^1.1.0",
     "@types/reach__router": "1.3.9",
     "@types/react-dom": "17.0.9",
     "@types/react-helmet": "6.1.2",

client/src/redux/failed-updates-epic.js

@@ -11,7 +11,7 @@ import {
 import store from 'store';
 import { v4 as uuid } from 'uuid';
 
-import { backEndProject } from '../../utils/challengeTypes';
+import { backEndProject } from '../../utils/challenge-types';
 import { isGoodXHRStatus } from '../templates/Challenges/utils';
 import postUpdate$ from '../templates/Challenges/utils/postUpdate$';
 import { actionTypes } from './action-types';

client/src/templates/Challenges/classic/Show.tsx

@@ -13,7 +13,7 @@ import { createStructuredSelector } from 'reselect';
 
 // Local Utilities
 import store from 'store';
-import { challengeTypes } from '../../../../utils/challengeTypes';
+import { challengeTypes } from '../../../../utils/challenge-types';
 import LearnLayout from '../../../components/layouts/learn';
 import {
   ChallengeNodeType,

client/src/templates/Challenges/projects/solution-form.tsx

@@ -7,7 +7,7 @@ import {
   backEndProject,
   frontEndProject,
   pythonProject
-} from '../../../../utils/challengeTypes';
+} from '../../../../utils/challenge-types';
 import { Form } from '../../../components/formHelpers';
 
 interface SubmitProps {

client/src/templates/Challenges/redux/completion-epic.js

@@ -10,7 +10,7 @@ import {
   finalize
 } from 'rxjs/operators';
 
-import { challengeTypes, submitTypes } from '../../../../utils/challengeTypes';
+import { challengeTypes, submitTypes } from '../../../../utils/challenge-types';
 import {
   userSelector,
   isSignedInSelector,

client/src/templates/Challenges/redux/index.js

@@ -3,7 +3,7 @@ import { createAction, handleActions } from 'redux-actions';
 
 import { getLines } from '../../../../../utils/get-lines';
 import { createPoly } from '../../../../../utils/polyvinyl';
-import { challengeTypes } from '../../../../utils/challengeTypes';
+import { challengeTypes } from '../../../../utils/challenge-types';
 import { completedChallengesSelector } from '../../../redux';
 import { getTargetEditor } from '../utils/getTargetEditor';
 import { actionTypes, ns } from './action-types';

client/src/templates/Challenges/utils/build.js

@@ -3,7 +3,7 @@
 import frameRunnerData from '../../../../../config/client/frame-runner.json';
 // eslint-disable-next-line import/no-unresolved
 import testEvaluatorData from '../../../../../config/client/test-evaluator.json';
-import { challengeTypes } from '../../../../utils/challengeTypes';
+import { challengeTypes } from '../../../../utils/challenge-types';
 import { cssToHtml, jsToHtml, concatHtml } from '../rechallenge/builders.js';
 import { getTransformers } from '../rechallenge/transformers';
 import {

client/utils/build-challenges.js

@@ -1,4 +1,5 @@
 const path = require('path');
+
 const _ = require('lodash');
 
 const envData = require('../../config/env.json');

client/utils/gatsby/challenge-page-creator.js

@@ -1,7 +1,7 @@
 const path = require('path');
 const { dasherize } = require('../../../utils/slugs');
 
-const { viewTypes } = require('../challengeTypes');
+const { viewTypes } = require('../challenge-types');
 
 const backend = path.resolve(
   __dirname,
@@ -42,21 +42,22 @@ const views = {
   // quiz: Quiz
 };
 
-const getNextChallengePath = (node, index, nodeArray) => {
+function getNextChallengePath(_node, index, nodeArray) {
   const next = nodeArray[index + 1];
   return next ? next.node.fields.slug : '/learn';
-};
+}
 
-const getPrevChallengePath = (node, index, nodeArray) => {
+function getPrevChallengePath(_node, index, nodeArray) {
   const prev = nodeArray[index - 1];
   return prev ? prev.node.fields.slug : '/learn';
-};
+}
 
-const getTemplateComponent = challengeType => views[viewTypes[challengeType]];
+function getTemplateComponent(challengeType) {
+  return views[viewTypes[challengeType]];
+}
 
-exports.createChallengePages =
+exports.createChallengePages = function (createPage) {
-  createPage =>
+  return function ({ node }, index, thisArray) {
-  ({ node }, index, thisArray) => {
     const {
       superBlock,
       block,
@@ -69,7 +70,7 @@ exports.createChallengePages =
     // TODO: challengeType === 7 and isPrivate are the same, right? If so, we
     // should remove one of them.
 
-    return createPage({
+    createPage({
       path: slug,
       component: getTemplateComponent(challengeType),
       context: {
@@ -86,14 +87,16 @@ exports.createChallengePages =
       }
     });
   };
+};
 
-exports.createBlockIntroPages = createPage => edge => {
+exports.createBlockIntroPages = function (createPage) {
+  return function (edge) {
     const {
       fields: { slug },
       frontmatter: { block }
     } = edge.node;
 
-  return createPage({
+    createPage({
       path: slug,
       component: intro,
       context: {
@@ -102,14 +105,16 @@ exports.createBlockIntroPages = createPage => edge => {
       }
     });
   };
+};
 
-exports.createSuperBlockIntroPages = createPage => edge => {
+exports.createSuperBlockIntroPages = function (createPage) {
+  return function (edge) {
     const {
       fields: { slug },
       frontmatter: { superBlock }
     } = edge.node;
 
-  return createPage({
+    createPage({
       path: slug,
       component: superBlockIntro,
       context: {
@@ -118,3 +123,4 @@ exports.createSuperBlockIntroPages = createPage => edge => {
       }
     });
   };
+};

client/utils/gatsby/index.js

@@ -1,4 +1,4 @@
-const challengePageCreators = require('./challengePageCreator');
+const challengePageCreators = require('./challenge-page-creator');
 
 module.exports = {
   ...challengePageCreators

client/utils/gatsby/layout-selector.test.tsx

@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
 import React from 'react';
 import { Provider } from 'react-redux';
 import ShallowRenderer from 'react-test-renderer/shallow';
@@ -11,10 +12,19 @@ import layoutSelector from './layout-selector';
 jest.mock('../../src/analytics');
 
 const store = createStore();
-function getComponentNameAndProps(elementType, pathname) {
+
-  const shallow = new ShallowRenderer();
+interface NameAndProps {
+  props: Record<string, unknown>;
+  name: string;
+}
+function getComponentNameAndProps(
+  elementType: React.JSXElementConstructor<never>,
+  pathname: string
+): NameAndProps {
+  // eslint-disable-next-line testing-library/render-result-naming-convention
+  const shallow = ShallowRenderer.createRenderer();
   const LayoutReactComponent = layoutSelector({
-    element: { type: elementType },
+    element: { type: elementType, props: {}, key: '' },
     props: {
       location: {
         pathname
@@ -24,8 +34,13 @@ function getComponentNameAndProps(elementType, pathname) {
   shallow.render(<Provider store={store}>{LayoutReactComponent}</Provider>);
   const view = shallow.getRenderOutput();
   return {
-    props: view.props,
+    props: view.props as Record<string, unknown>,
+    // eslint-disable-next-line @typescript-eslint/ban-ts-comment
+    // @ts-ignore
+    // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
     name: view.type.WrappedComponent.displayName
+    // TODO: Revisit this when react-test-renderer is replaced with
+    // react-testing-library
   };
 }
 

client/utils/gatsby/layout-selector.tsx

@@ -1,4 +1,5 @@
 import React from 'react';
+
 import {
   CertificationLayout,
   DefaultLayout
@@ -6,21 +7,14 @@ import {
 import FourOhFourPage from '../../src/pages/404';
 import { isChallenge } from '../../src/utils/path-parsers';
 
-interface Location {
-  pathname: string;
-}
-
 interface LayoutSelectorProps {
-  props: {
+  element: JSX.Element;
-    location: Location;
+  props: { location: { pathname: string } };
-  };
-  element: React.ReactElement;
 }
-
 export default function layoutSelector({
   element,
   props
-}: LayoutSelectorProps): React.ReactElement {
+}: LayoutSelectorProps): JSX.Element {
   const {
     location: { pathname }
   } = props;

client/utils/index.js

@@ -1,3 +0,0 @@
-exports.isBrowser = function isBrowser() {
-  return typeof window !== 'undefined';
-};

client/utils/index.ts

@@ -0,0 +1,3 @@
+export function isBrowser(): boolean {
+  return typeof window !== 'undefined';
+}

client/utils/tags.test.tsx

@@ -1,8 +1,9 @@
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
 import { injectConditionalTags } from './tags';
 
 describe('Tags', () => {
   it('injectConditionalTags should inject gap dev homelocation', () => {
-    let injectedTags = injectConditionalTags(
+    const injectedTags = injectConditionalTags(
       [],
       'https://www.freecodecamp.dev'
     );
@@ -10,7 +11,7 @@ describe('Tags', () => {
     expect(injectedTags[0].props.id === 'gap-dev').toBeTruthy();
   });
   it('injectConditionalTags should inject gap for english homeLocation', () => {
-    let injectedTags = injectConditionalTags(
+    const injectedTags = injectConditionalTags(
       [],
       'https://www.freecodecamp.org'
     );
@@ -18,7 +19,7 @@ describe('Tags', () => {
     expect(injectedTags[0].props.id === 'gap-org').toBeTruthy();
   });
   it('injectConditionalTags should inject gap for espanol homeLocation', () => {
-    let injectedTags = injectConditionalTags(
+    const injectedTags = injectConditionalTags(
       [],
       'https://www.freecodecamp.org/espanol'
     );
@@ -26,7 +27,7 @@ describe('Tags', () => {
     expect(injectedTags[0].props.id === 'gap-org').toBeTruthy();
   });
   it('injectConditionalTags should inject cap and chinese gap for chinese homeLocation', () => {
-    let injectedTags = injectConditionalTags(
+    const injectedTags = injectConditionalTags(
       [],
       'https://chinese.freecodecamp.org'
     );
@@ -35,7 +36,7 @@ describe('Tags', () => {
     expect(injectedTags[1].props.id === 'gap-org-chinese').toBeTruthy();
   });
   it('injectConditionalTags should not inject tags for localhost homeLocation', () => {
-    let injectedTags = injectConditionalTags([], 'http://localhost:8000/');
+    const injectedTags = injectConditionalTags([], 'http://localhost:8000/');
     expect(injectedTags.length === 0).toBeTruthy();
   });
 });

client/utils/tags.tsx

@@ -6,13 +6,13 @@ import env from '../../config/env.json';
 
 const { homeLocation } = env;
 
-export const getheadTagComponents = () => {
+export function getheadTagComponents(): JSX.Element[] {
   const socialImage =
     'https://cdn.freecodecamp.org/platform/universal/fcc_meta_1920X1080-indigo.png';
 
   const pathToBootstrap = withPrefix('/css/bootstrap.min.css');
 
-  let headTags = [
+  const headTags = [
     <link
       as='style'
       href={pathToBootstrap}
@@ -54,19 +54,25 @@ export const getheadTagComponents = () => {
     />
   ];
   return injectConditionalTags(headTags, homeLocation);
-};
+}
 
 // strips subpath and protocol
 
-export const injectConditionalTags = (tagsArray, homeLocation) => {
+export function injectConditionalTags(
+  tagsArray: JSX.Element[],
+  homeLocation: string
+): JSX.Element[] {
   if (homeLocation.includes('localhost')) return tagsArray;
 
-  const parsedHomeUrl = psl.parse(new URL(homeLocation).host);
+  const parsedHomeUrl = psl.parse(
+    new URL(homeLocation).host
+  ) as psl.ParsedDomain;
 
   // inject gap all production languages except Chinese
   if (parsedHomeUrl.subdomain === 'www' && parsedHomeUrl.tld === 'org') {
     tagsArray.push(
       <script
+        // @ts-expect-error TODO: check use of href/rel on <script>
         href={withPrefix('/misc/gap-org.js')}
         id='gap-org'
         key='gap-org'
@@ -79,6 +85,7 @@ export const injectConditionalTags = (tagsArray, homeLocation) => {
   if (parsedHomeUrl.subdomain === 'www' && parsedHomeUrl.tld === 'dev') {
     tagsArray.push(
       <script
+        // @ts-expect-error See above
         href={withPrefix('/misc/gap-dev.js')}
         id='gap-dev'
         key='gap-dev'
@@ -90,13 +97,15 @@ export const injectConditionalTags = (tagsArray, homeLocation) => {
   // inject cap and Chinese gap for production Chinese
   if (parsedHomeUrl.subdomain === 'chinese' && parsedHomeUrl.tld === 'org') {
     tagsArray.push(
-      <scripts
+      <script
+        // @ts-expect-error See above
         href={withPrefix('/misc/cap.js')}
         id='cap'
         key='cap'
         rel='stylesheet'
       />,
       <script
+        // @ts-expect-error See above
         href={withPrefix('/misc/gap-org-chinese.js')}
         id='gap-org-chinese'
         key='gap-org-chinese'
@@ -105,10 +114,10 @@ export const injectConditionalTags = (tagsArray, homeLocation) => {
     );
   }
   return tagsArray;
-};
+}
 
-export const getPostBodyComponents = pathname => {
+export function getPostBodyComponents(pathname: string): JSX.Element[] {
-  let scripts = [];
+  const scripts = [];
   const mathJaxScriptElement = (
     <script
       async={false}
@@ -127,4 +136,4 @@ export const getPostBodyComponents = pathname => {
   }
 
   return scripts.filter(Boolean);
-};
+}

curriculum/getChallenges.js

@@ -4,7 +4,7 @@ const util = require('util');
 const yaml = require('js-yaml');
 const { findIndex, reduce, toString } = require('lodash');
 const readDirP = require('readdirp');
-const { helpCategoryMap } = require('../client/utils/challengeTypes');
+const { helpCategoryMap } = require('../client/utils/challenge-types');
 const { showUpcomingChanges } = require('../config/env.json');
 const { curriculum: curriculumLangs } =
   require('../config/i18n/all-langs').availableLangs;

curriculum/schema/challengeSchema.js

@@ -1,7 +1,7 @@
 const Joi = require('joi');
 Joi.objectId = require('joi-objectid')(Joi);
 
-const { challengeTypes } = require('../../client/utils/challengeTypes');
+const { challengeTypes } = require('../../client/utils/challenge-types');
 
 const slugRE = new RegExp('^[a-z0-9-]+$');
 

curriculum/test/test-challenges.js

@@ -33,7 +33,7 @@ const {
 const {
   default: createWorker
 } = require('../../client/src/templates/Challenges/utils/worker-executor');
-const { challengeTypes } = require('../../client/utils/challengeTypes');
+const { challengeTypes } = require('../../client/utils/challenge-types');
 // the config files are created during the build, but not before linting
 /* eslint-disable import/no-unresolved */
 const testEvaluator =

docs/how-to-work-on-coding-challenges.md

@@ -39,7 +39,7 @@ The practice projects have some additional tooling to help create new projects a
 ---
 id: Unique identifier (alphanumerical, MongoDB_id)
 title: 'Challenge Title'
-challengeType: Integer, defined in `client/utils/challengeTypes.js`
+challengeType: Integer, defined in `client/utils/challenge-types.js`
 videoUrl: 'url of video explanation'
 forumTopicId: 12345
 ---
@@ -488,6 +488,6 @@ Once you have verified that each challenge you've worked on passes the tests, [p
 
 Creating and Editing Challenges:
 
-1. [Challenge types](https://github.com/freeCodeCamp/freeCodeCamp/blob/main/client/utils/challengeTypes.js#L1-L13) - what the numeric challenge type values mean (enum).
+1. [Challenge types](https://github.com/freeCodeCamp/freeCodeCamp/blob/main/client/utils/challenge-types.js#L1-L13) - what the numeric challenge type values mean (enum).
 
 2. [Contributing to FreeCodeCamp - Writing ES6 Challenge Tests](https://www.youtube.com/watch?v=iOdD84OSfAE#t=2h49m55s) - a video following [Ethan Arrowood](https://twitter.com/ArrowoodTech) as he contributes to the old version of the curriculum.