Set up eslint for wardrobe-2020

Ok cool, I have just not been running any of this since moving out of
impress-2020, but now that we're doing serious JS work in here it's time
to turn it back on!!

1. Install eslint and the plugins we use
2. Set up a `yarn lint` command
3. Set up a git hook via husky to lint on pre-commit
4. Fix/disable all the lint errors!

.eslintrc.json

@@ -0,0 +1,45 @@
+{
+  "extends": [
+    "eslint:recommended",
+    "plugin:@typescript-eslint/recommended",
+    "plugin:react/recommended",
+    "plugin:react-hooks/recommended",
+    "plugin:jsx-a11y/recommended"
+  ],
+  "parser": "@typescript-eslint/parser",
+  "plugins": ["@typescript-eslint", "react", "react-hooks", "jsx-a11y"],
+  "env": {
+    "browser": true,
+    "es2021": true
+  },
+  "globals": {
+    "process": true // For process.env["NODE_ENV"]
+  },
+  "rules": {
+    "no-console": [
+      "warn",
+      {
+        "allow": ["debug", "info", "warn", "error"]
+      }
+    ],
+    "import/first": "off",
+    "import/no-webpack-loader-syntax": "off",
+    "no-unused-vars": "off",
+    "@typescript-eslint/no-unused-vars": [
+      "warn",
+      {
+        "varsIgnorePattern": "^unused",
+        "argsIgnorePattern": "^_+$|^e$"
+      }
+    ],
+    "react/no-unescaped-entities": ["error", { "forbid": [">", "}"] }],
+    // We have some React.forwardRefs that trigger this, not sure how to improve
+    "react/display-name": "off",
+    "react/prop-types": "off"
+  },
+  "settings": {
+    "react": {
+      "version": "detect"
+    }
+  }
+}

.husky/pre-commit

@@ -0,0 +1,4 @@
+#!/usr/bin/env sh
+. "$(dirname -- "$0")/_/husky.sh"
+
+yarn lint --max-warnings=0 --fix

app/javascript/item-page.js

@@ -5,6 +5,8 @@ import { AppProvider, ItemPageOutfitPreview } from "./wardrobe-2020";
 
 const rootNode = document.querySelector("#outfit-preview-root");
 const itemId = rootNode.getAttribute("data-item-id");
+// TODO: Use the new React 18 APIs instead!
+// eslint-disable-next-line react/no-deprecated
 ReactDOM.render(
   <AppProvider>
     <ItemPageOutfitPreview itemId={itemId} />

app/javascript/wardrobe-2020-page.js

@@ -4,6 +4,8 @@ import ReactDOM from "react-dom";
 import { AppProvider, WardrobePage } from "./wardrobe-2020";
 
 const rootNode = document.querySelector("#wardrobe-2020-root");
+// TODO: Use the new React 18 APIs instead!
+// eslint-disable-next-line react/no-deprecated
 ReactDOM.render(
   <AppProvider>
     <WardrobePage />

app/javascript/wardrobe-2020/WardrobePage/Item.js

@@ -285,7 +285,7 @@ function ItemActionButton({ icon, label, to, onClick }) {
   );
 }
 
-function LinkOrButton({ href, component = Button, ...props }) {
+function LinkOrButton({ href, component, ...props }) {
   const ButtonComponent = component;
   if (href != null) {
     return <ButtonComponent as="a" href={href} {...props} />;

app/javascript/wardrobe-2020/WardrobePage/SearchPanel.js

@@ -227,6 +227,8 @@ function SearchResultItem({
   );
 
   return (
+    // We're wrapping the control inside the label, which works just fine!
+    // eslint-disable-next-line jsx-a11y/label-has-associated-control
     <label>
       <VisuallyHidden
         as="input"

app/javascript/wardrobe-2020/WardrobePage/SearchToolbar.js

@@ -242,6 +242,8 @@ function SearchToolbar({
             )}
             <Input
               background={background}
+              // TODO: How to improve a11y here?
+              // eslint-disable-next-line jsx-a11y/no-autofocus
               autoFocus={autoFocus}
               {...inputProps}
             />

app/javascript/wardrobe-2020/WardrobePage/index.js

@@ -4,7 +4,6 @@ import { useToast } from "@chakra-ui/react";
 import { emptySearchQuery } from "./SearchToolbar";
 import ItemsAndSearchPanels from "./ItemsAndSearchPanels";
 import SearchFooter from "./SearchFooter";
-import SupportOnly from "./support/SupportOnly";
 import useOutfitSaving from "./useOutfitSaving";
 import useOutfitState, { OutfitStateContext } from "./useOutfitState";
 import WardrobePageLayout from "./WardrobePageLayout";
@@ -111,36 +110,4 @@ function WardrobePage() {
   );
 }
 
-/**
- * SavedOutfitMetaTags renders the meta tags that we use to render pretty
- * share cards for social media for saved outfits!
- */
-function SavedOutfitMetaTags({ outfitState }) {
-  const updatedAtTimestamp = Math.floor(
-    new Date(outfitState.updatedAt).getTime() / 1000,
-  );
-  const imageUrl =
-    `https://impress-outfit-images.openneo.net/outfits` +
-    `/${encodeURIComponent(outfitState.id)}` +
-    `/v/${encodeURIComponent(updatedAtTimestamp)}` +
-    `/600.png`;
-
-  return (
-    <>
-      <meta
-        property="og:title"
-        content={outfitState.name || "Untitled outfit"}
-      />
-      <meta property="og:type" content="website" />
-      <meta property="og:image" content={imageUrl} />
-      <meta property="og:url" content={outfitState.url} />
-      <meta property="og:site_name" content="Dress to Impress" />
-      <meta
-        property="og:description"
-        content="A custom Neopets outfit, designed on Dress to Impress!"
-      />
-    </>
-  );
-}
-
 export default WardrobePage;

app/javascript/wardrobe-2020/WardrobePage/useOutfitSaving.js

@@ -96,7 +96,7 @@ function useOutfitSaving(outfitState, dispatchToOutfit) {
     // It's important that this callback _doesn't_ change when the outfit
     // changes, so that the auto-save effect is only responding to the
     // debounced state!
-    [saveOutfitMutation.mutateAsync, pathname, navigate, toast],
+    [saveOutfitMutation, pathname, navigate, toast],
   );
 
   const saveOutfit = React.useCallback(

app/javascript/wardrobe-2020/WardrobePage/useOutfitState.js

@@ -250,13 +250,9 @@ function useOutfitState() {
   // Keep the URL up-to-date.
   const path = buildOutfitPath(outfitState);
   React.useEffect(() => {
-    console.debug(
-      `[useOutfitState] Navigating to latest outfit path:`,
-      path,
-      outfitState,
-    );
+    console.debug(`[useOutfitState] Navigating to latest outfit path:`, path);
     navigate(path, { replace: true });
-  }, [path]);
+  }, [path, navigate]);
 
   return {
     loading: outfitLoading || itemsLoading,
@@ -393,6 +389,9 @@ function useParseOutfitUrl() {
   // stable object!
   const memoizedOutfitState = React.useMemo(
     () => readOutfitStateFromSearchParams(location.pathname, mergedParams),
+    // TODO: This hook is reliable as-is, I think… but is there a simpler way
+    // to make it obvious that it is?
+    // eslint-disable-next-line react-hooks/exhaustive-deps
     [location.pathname, mergedParams.toString()],
   );
 

app/javascript/wardrobe-2020/apolloClient.js

@@ -1,6 +1,5 @@
 import { ApolloClient, createHttpLink, InMemoryCache } from "@apollo/client";
 import { loadErrorMessages, loadDevMessages } from "@apollo/client/dev";
-import { setContext } from "@apollo/client/link/context";
 import { createPersistedQueryLink } from "apollo-link-persisted-queries";
 
 // Use Apollo's error messages in development.

app/javascript/wardrobe-2020/components/PaginationToolbar.js

@@ -1,6 +1,5 @@
 import React from "react";
 import { Box, Button, Flex, Select } from "@chakra-ui/react";
-import { useSearchParams } from "react-router-dom";
 
 function PaginationToolbar({
   isLoading,
@@ -71,42 +70,6 @@ function PaginationToolbar({
   );
 }
 
-export function useRouterPagination(totalCount, numPerPage) {
-  const [searchParams, setSearchParams] = useSearchParams();
-
-  const currentOffset = parseInt(searchParams.get("offset")) || 0;
-
-  const currentPageIndex = Math.floor(currentOffset / numPerPage);
-  const currentPageNumber = currentPageIndex + 1;
-  const numTotalPages = totalCount ? Math.ceil(totalCount / numPerPage) : null;
-
-  const buildPageUrl = React.useCallback(
-    (newPageNumber) => {
-      setSearchParams((newParams) => {
-        const newPageIndex = newPageNumber - 1;
-        const newOffset = newPageIndex * numPerPage;
-        newParams.set("offset", newOffset);
-        return newParams;
-      });
-    },
-    [query, numPerPage],
-  );
-
-  const goToPageNumber = React.useCallback(
-    (newPageNumber) => {
-      pushHistory(buildPageUrl(newPageNumber));
-    },
-    [buildPageUrl, pushHistory],
-  );
-
-  return {
-    numTotalPages,
-    currentPageNumber,
-    goToPageNumber,
-    buildPageUrl,
-  };
-}
-
 function LinkOrButton({ href, ...props }) {
   if (href != null) {
     return <Button as="a" href={href} {...props} />;

app/javascript/wardrobe-2020/util.js

@@ -454,11 +454,10 @@ export function MajorErrorMessage({ error = null, variant = "unexpected" }) {
           >
             <img
               src={ErrorGrundoImg}
-              srcset={`${ErrorGrundoImg}, ${ErrorGrundoImg2x} 2x`}
+              srcSet={`${ErrorGrundoImg}, ${ErrorGrundoImg2x} 2x`}
               alt="Distressed Grundo programmer"
               width={100}
               height={100}
-              layout="fixed"
             />
           </Box>
         </Box>

package.json

@@ -1,5 +1,6 @@
 {
-  "name": "app",
+  "name": "impress",
+  "private": true,
   "dependencies": {
     "@apollo/client": "^3.6.9",
     "@chakra-ui/icons": "^1.0.4",
@@ -27,11 +28,21 @@
     "tweenjs": "^1.0.2"
   },
   "devDependencies": {
-    "prettier": "^3.0.3"
+    "@typescript-eslint/eslint-plugin": "^6.9.1",
+    "@typescript-eslint/parser": "^6.9.1",
+    "eslint": "^8.52.0",
+    "eslint-plugin-jsx-a11y": "^6.8.0",
+    "eslint-plugin-react": "^7.33.2",
+    "eslint-plugin-react-hooks": "^4.6.0",
+    "husky": "^8.0.3",
+    "prettier": "^3.0.3",
+    "typescript": "^5.2.2"
   },
   "scripts": {
     "build": "esbuild app/javascript/*.* --bundle --sourcemap --outdir=app/assets/builds --public-path=/assets --asset-names=[name]-[hash].digested --loader:.js=jsx --loader:.png=file --loader:.svg=file --loader:.min.js=text",
     "build:dev": "yarn build --public-path=/dev-assets",
-    "dev": "yarn build:dev --watch"
+    "dev": "yarn build:dev --watch",
+    "lint": "eslint app/javascript",
+    "prepare": "husky install"
   }
 }