CNA: replace `.eslintrc.json` with `eslint.config.mjs` #73162

devjiwonchoi · 2024-11-25T10:36:09Z

Why?

As we upgraded create-next-app ESLint to v9, use flat config (with compatible function) for the templates.

eslint.config.mjs:

import { dirname } from "path";
import { fileURLToPath } from "url";
import { FlatCompat } from "@eslint/eslintrc";

const __filename = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);

const compat = new FlatCompat({
  baseDirectory: __dirname,
});

const eslintConfig = [...compat.extends("next/core-web-vitals")];

export default eslintConfig;

As import.meta.dirname was introduced in Node.js version v20.11.0, we can simplify to when on minimum version:

import { FlatCompat } from "@eslint/eslintrc";

const compat = new FlatCompat({
  baseDirectory: import.meta.dirname,
});

const eslintConfig = [...compat.extends("next/core-web-vitals")];

export default eslintConfig;

But best is that other dependency plugins support flat config so we can upgrade to pure Flat Config as well.

Closes NDX-374

ijjk · 2024-11-25T10:39:46Z

Tests Passed

ijjk · 2024-11-25T10:44:27Z

Stats from current PR

Default Build (Increase detected ⚠️)

General

	vercel/next.js canary	vercel/next.js jwn/9ggz	Change
buildDuration	19.4s	19s	N/A
buildDurationCached	17.7s	14.5s	N/A
nodeModulesSize	405 MB	405 MB	N/A
nextStartRea..uration (ms)	475ms	476ms	N/A

Client Bundles (main, webpack)

	vercel/next.js canary	vercel/next.js jwn/9ggz	Change
0b69cffb-HASH.js gzip	52.8 kB	52.6 kB	N/A
1924.HASH.js gzip	169 B	169 B	✓
195-HASH.js gzip	48.9 kB	48.4 kB	N/A
8589-HASH.js gzip	5.27 kB	5.28 kB	N/A
framework-HASH.js gzip	57.4 kB	57.4 kB	N/A
main-app-HASH.js gzip	231 B	230 B	N/A
main-HASH.js gzip	33.1 kB	33.1 kB	N/A
webpack-HASH.js gzip	1.71 kB	1.71 kB	N/A
Overall change	169 B	169 B	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	vercel/next.js jwn/9ggz	Change
polyfills-HASH.js gzip	39.4 kB	39.4 kB	✓
Overall change	39.4 kB	39.4 kB	✓

Client Pages Overall increase ⚠️

	vercel/next.js canary	vercel/next.js jwn/9ggz	Change
_app-HASH.js gzip	193 B	193 B	✓
_error-HASH.js gzip	192 B	190 B	N/A
amp-HASH.js gzip	510 B	510 B	✓
css-HASH.js gzip	341 B	343 B	N/A
dynamic-HASH.js gzip	1.84 kB	1.84 kB	N/A
edge-ssr-HASH.js gzip	266 B	266 B	✓
head-HASH.js gzip	362 B	364 B	N/A
hooks-HASH.js gzip	393 B	392 B	N/A
image-HASH.js gzip	4.42 kB	4.42 kB	N/A
index-HASH.js gzip	268 B	268 B	✓
link-HASH.js gzip	2.34 kB	2.77 kB	⚠️ +431 B
routerDirect..HASH.js gzip	328 B	327 B	N/A
script-HASH.js gzip	398 B	396 B	N/A
withRouter-HASH.js gzip	325 B	322 B	N/A
1afbb74e6ecf..834.css gzip	106 B	106 B	✓
Overall change	3.69 kB	4.12 kB	⚠️ +431 B

Client Build Manifests

	vercel/next.js canary	vercel/next.js jwn/9ggz	Change
_buildManifest.js gzip	748 B	749 B	N/A
Overall change	0 B	0 B	✓

Rendered Page Sizes

	vercel/next.js canary	vercel/next.js jwn/9ggz	Change
index.html gzip	522 B	523 B	N/A
link.html gzip	538 B	536 B	N/A
withRouter.html gzip	520 B	516 B	N/A
Overall change	0 B	0 B	✓

Edge SSR bundle Size

	vercel/next.js canary	vercel/next.js jwn/9ggz	Change
edge-ssr.js gzip	128 kB	128 kB	N/A
page.js gzip	200 kB	199 kB	N/A
Overall change	0 B	0 B	✓

Middleware size

	vercel/next.js canary	vercel/next.js jwn/9ggz	Change
middleware-b..fest.js gzip	672 B	666 B	N/A
middleware-r..fest.js gzip	156 B	155 B	N/A
middleware.js gzip	31 kB	31 kB	N/A
edge-runtime..pack.js gzip	844 B	844 B	✓
Overall change	844 B	844 B	✓

Next Runtimes

	vercel/next.js canary	vercel/next.js jwn/9ggz	Change
732-experime...dev.js gzip	322 B	322 B	✓
732.runtime.dev.js gzip	314 B	314 B	✓
app-page-exp...dev.js gzip	323 kB	323 kB	N/A
app-page-exp..prod.js gzip	125 kB	125 kB	N/A
app-page-tur..prod.js gzip	138 kB	138 kB	N/A
app-page-tur..prod.js gzip	133 kB	133 kB	N/A
app-page.run...dev.js gzip	314 kB	313 kB	N/A
app-page.run..prod.js gzip	121 kB	121 kB	N/A
app-route-ex...dev.js gzip	36.1 kB	36 kB	N/A
app-route-ex..prod.js gzip	24.4 kB	24.4 kB	N/A
app-route-tu..prod.js gzip	24.4 kB	24.4 kB	N/A
app-route-tu..prod.js gzip	24.3 kB	24.2 kB	N/A
app-route.ru...dev.js gzip	37.7 kB	37.6 kB	N/A
app-route.ru..prod.js gzip	24.2 kB	24.2 kB	N/A
pages-api-tu..prod.js gzip	9.57 kB	9.57 kB	✓
pages-api.ru...dev.js gzip	11.4 kB	11.4 kB	✓
pages-api.ru..prod.js gzip	9.56 kB	9.56 kB	✓
pages-turbo...prod.js gzip	21 kB	21 kB	✓
pages.runtim...dev.js gzip	26.6 kB	26.6 kB	✓
pages.runtim..prod.js gzip	21 kB	21 kB	✓
server.runti..prod.js gzip	916 kB	916 kB	N/A
Overall change	99.7 kB	99.7 kB	✓

build cache

	vercel/next.js canary	vercel/next.js jwn/9ggz	Change
0.pack gzip	2.03 MB	2.02 MB	N/A
index.pack gzip	148 kB	147 kB	N/A
Overall change	0 B	0 B	✓

Diff details

Diff for page.js

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Diff for middleware.js

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Diff for edge-ssr.js

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Diff for image-HASH.js

@@ -1,7 +1,7 @@
 (self["webpackChunk_N_E"] = self["webpackChunk_N_E"] || []).push([
   [2983],
   {
-    /***/ 6745: /***/ (
+    /***/ 7391: /***/ (
       __unused_webpack_module,
       __unused_webpack_exports,
       __webpack_require__
@@ -9,7 +9,7 @@
       (window.__NEXT_P = window.__NEXT_P || []).push([
         "/image",
         function () {
-          return __webpack_require__(5675);
+          return __webpack_require__(1489);
         },
       ]);
       if (false) {
@@ -18,7 +18,7 @@
       /***/
     },
 
-    /***/ 9053: /***/ (module, exports, __webpack_require__) => {
+    /***/ 9313: /***/ (module, exports, __webpack_require__) => {
       "use strict";
       /* __next_internal_client_entry_do_not_use__  cjs */
       Object.defineProperty(exports, "__esModule", {
@@ -40,17 +40,17 @@
         __webpack_require__(6093)
       );
       const _head = /*#__PURE__*/ _interop_require_default._(
-        __webpack_require__(8808)
+        __webpack_require__(7964)
       );
-      const _getimgprops = __webpack_require__(1945);
-      const _imageconfig = __webpack_require__(7668);
-      const _imageconfigcontextsharedruntime = __webpack_require__(1694);
-      const _warnonce = __webpack_require__(1876);
-      const _routercontextsharedruntime = __webpack_require__(5575);
+      const _getimgprops = __webpack_require__(8821);
+      const _imageconfig = __webpack_require__(664);
+      const _imageconfigcontextsharedruntime = __webpack_require__(6418);
+      const _warnonce = __webpack_require__(7360);
+      const _routercontextsharedruntime = __webpack_require__(4203);
       const _imageloader = /*#__PURE__*/ _interop_require_default._(
-        __webpack_require__(3589)
+        __webpack_require__(2489)
       );
-      const _usemergedref = __webpack_require__(6746);
+      const _usemergedref = __webpack_require__(2454);
       // This is replaced by webpack define plugin
       const configEnv = {
         deviceSizes: [640, 750, 828, 1080, 1200, 1920, 2048, 3840],
@@ -371,7 +371,7 @@
       /***/
     },
 
-    /***/ 6746: /***/ (module, exports, __webpack_require__) => {
+    /***/ 2454: /***/ (module, exports, __webpack_require__) => {
       "use strict";
 
       Object.defineProperty(exports, "__esModule", {
@@ -432,7 +432,7 @@
       /***/
     },
 
-    /***/ 1945: /***/ (
+    /***/ 8821: /***/ (
       __unused_webpack_module,
       exports,
       __webpack_require__
@@ -448,9 +448,9 @@
           return getImgProps;
         },
       });
-      const _warnonce = __webpack_require__(1876);
-      const _imageblursvg = __webpack_require__(6704);
-      const _imageconfig = __webpack_require__(7668);
+      const _warnonce = __webpack_require__(7360);
+      const _imageblursvg = __webpack_require__(5884);
+      const _imageconfig = __webpack_require__(664);
       const VALID_LOADING_VALUES =
         /* unused pure expression or super */ null && [
           "lazy",
@@ -824,7 +824,7 @@
       /***/
     },
 
-    /***/ 6704: /***/ (__unused_webpack_module, exports) => {
+    /***/ 5884: /***/ (__unused_webpack_module, exports) => {
       "use strict";
       /**
        * A shared function, used on both client and server, to generate a SVG blur placeholder.
@@ -879,7 +879,7 @@
       /***/
     },
 
-    /***/ 965: /***/ (
+    /***/ 9345: /***/ (
       __unused_webpack_module,
       exports,
       __webpack_require__
@@ -906,10 +906,10 @@
         },
       });
       const _interop_require_default = __webpack_require__(1739);
-      const _getimgprops = __webpack_require__(1945);
-      const _imagecomponent = __webpack_require__(9053);
+      const _getimgprops = __webpack_require__(8821);
+      const _imagecomponent = __webpack_require__(9313);
       const _imageloader = /*#__PURE__*/ _interop_require_default._(
-        __webpack_require__(3589)
+        __webpack_require__(2489)
       );
       function getImageProps(imgProps) {
         const { props } = (0, _getimgprops.getImgProps)(imgProps, {
@@ -941,7 +941,7 @@
       /***/
     },
 
-    /***/ 3589: /***/ (__unused_webpack_module, exports) => {
+    /***/ 2489: /***/ (__unused_webpack_module, exports) => {
       "use strict";
 
       Object.defineProperty(exports, "__esModule", {
@@ -976,7 +976,7 @@
       /***/
     },
 
-    /***/ 5675: /***/ (
+    /***/ 1489: /***/ (
       __unused_webpack_module,
       __webpack_exports__,
       __webpack_require__
@@ -993,8 +993,8 @@
 
       // EXTERNAL MODULE: ./node_modules/.pnpm/react@19.0.0-rc-380f5d67-20241113/node_modules/react/jsx-runtime.js
       var jsx_runtime = __webpack_require__(6322);
-      // EXTERNAL MODULE: ./node_modules/.pnpm/next@file+..+main-repo+packages+next+next-packed.tgz_react-dom@19.0.0-rc-380f5d67-20241113_re_d7fg766ptstyt4prarg74ol27i/node_modules/next/image.js
-      var next_image = __webpack_require__(1695);
+      // EXTERNAL MODULE: ./node_modules/.pnpm/next@file+..+diff-repo+packages+next+next-packed.tgz_react-dom@19.0.0-rc-380f5d67-20241113_re_k6jswiqskvoeqe45yhuljotqne/node_modules/next/image.js
+      var next_image = __webpack_require__(8106);
       var image_default = /*#__PURE__*/ __webpack_require__.n(next_image); // ./pages/nextjs.png
       /* harmony default export */ const nextjs = {
         src: "/_next/static/media/nextjs.cae0b805.png",
@@ -1024,12 +1024,12 @@
       /***/
     },
 
-    /***/ 1695: /***/ (
+    /***/ 8106: /***/ (
       module,
       __unused_webpack_exports,
       __webpack_require__
     ) => {
-      module.exports = __webpack_require__(965);
+      module.exports = __webpack_require__(9345);
 
       /***/
     },
@@ -1039,7 +1039,7 @@
     /******/ var __webpack_exec__ = (moduleId) =>
       __webpack_require__((__webpack_require__.s = moduleId));
     /******/ __webpack_require__.O(0, [636, 6593, 8792], () =>
-      __webpack_exec__(6745)
+      __webpack_exec__(7391)
     );
     /******/ var __webpack_exports__ = __webpack_require__.O();
     /******/ _N_E = __webpack_exports__;

Diff for link-HASH.js

@@ -1,7 +1,7 @@
 (self["webpackChunk_N_E"] = self["webpackChunk_N_E"] || []).push([
   [4672],
   {
-    /***/ 7439: /***/ (
+    /***/ 9669: /***/ (
       __unused_webpack_module,
       __unused_webpack_exports,
       __webpack_require__
@@ -9,7 +9,7 @@
       (window.__NEXT_P = window.__NEXT_P || []).push([
         "/link",
         function () {
-          return __webpack_require__(2930);
+          return __webpack_require__(3336);
         },
       ]);
       if (false) {
@@ -18,7 +18,87 @@
       /***/
     },
 
-    /***/ 3398: /***/ (module, exports, __webpack_require__) => {
+    /***/ 6106: /***/ (module, exports) => {
+      "use strict";
+
+      Object.defineProperty(exports, "__esModule", {
+        value: true,
+      });
+      0 && 0;
+      function _export(target, all) {
+        for (var name in all)
+          Object.defineProperty(target, name, {
+            enumerable: true,
+            get: all[name],
+          });
+      }
+      _export(exports, {
+        ACTION_HMR_REFRESH: function () {
+          return ACTION_HMR_REFRESH;
+        },
+        ACTION_NAVIGATE: function () {
+          return ACTION_NAVIGATE;
+        },
+        ACTION_PREFETCH: function () {
+          return ACTION_PREFETCH;
+        },
+        ACTION_REFRESH: function () {
+          return ACTION_REFRESH;
+        },
+        ACTION_RESTORE: function () {
+          return ACTION_RESTORE;
+        },
+        ACTION_SERVER_ACTION: function () {
+          return ACTION_SERVER_ACTION;
+        },
+        ACTION_SERVER_PATCH: function () {
+          return ACTION_SERVER_PATCH;
+        },
+        PrefetchCacheEntryStatus: function () {
+          return PrefetchCacheEntryStatus;
+        },
+        PrefetchKind: function () {
+          return PrefetchKind;
+        },
+      });
+      const ACTION_REFRESH = "refresh";
+      const ACTION_NAVIGATE = "navigate";
+      const ACTION_RESTORE = "restore";
+      const ACTION_SERVER_PATCH = "server-patch";
+      const ACTION_PREFETCH = "prefetch";
+      const ACTION_HMR_REFRESH = "hmr-refresh";
+      const ACTION_SERVER_ACTION = "server-action";
+      var PrefetchKind = /*#__PURE__*/ (function (PrefetchKind) {
+        PrefetchKind["AUTO"] = "auto";
+        PrefetchKind["FULL"] = "full";
+        PrefetchKind["TEMPORARY"] = "temporary";
+        return PrefetchKind;
+      })({});
+      var PrefetchCacheEntryStatus = /*#__PURE__*/ (function (
+        PrefetchCacheEntryStatus
+      ) {
+        PrefetchCacheEntryStatus["fresh"] = "fresh";
+        PrefetchCacheEntryStatus["reusable"] = "reusable";
+        PrefetchCacheEntryStatus["expired"] = "expired";
+        PrefetchCacheEntryStatus["stale"] = "stale";
+        return PrefetchCacheEntryStatus;
+      })({});
+      if (
+        (typeof exports.default === "function" ||
+          (typeof exports.default === "object" && exports.default !== null)) &&
+        typeof exports.default.__esModule === "undefined"
+      ) {
+        Object.defineProperty(exports.default, "__esModule", {
+          value: true,
+        });
+        Object.assign(exports.default, exports);
+        module.exports = exports.default;
+      } //# sourceMappingURL=router-reducer-types.js.map
+
+      /***/
+    },
+
+    /***/ 2042: /***/ (module, exports, __webpack_require__) => {
       "use strict";
 
       Object.defineProperty(exports, "__esModule", {
@@ -30,7 +110,7 @@
           return getDomainLocale;
         },
       });
-      const _normalizetrailingslash = __webpack_require__(2710);
+      const _normalizetrailingslash = __webpack_require__(4922);
       const basePath =
         /* unused pure expression or super */ null && (false || "");
       function getDomainLocale(path, locale, locales, domainLocales) {
@@ -54,7 +134,7 @@
       /***/
     },
 
-    /***/ 6743: /***/ (module, exports, __webpack_require__) => {
+    /***/ 5368: /***/ (module, exports, __webpack_require__) => {
       "use strict";
       /* __next_internal_client_entry_do_not_use__  cjs */
       Object.defineProperty(exports, "__esModule", {
@@ -71,26 +151,32 @@
       const _react = /*#__PURE__*/ _interop_require_default._(
         __webpack_require__(2138)
       );
-      const _resolvehref = __webpack_require__(7894);
-      const _islocalurl = __webpack_require__(3110);
-      const _formaturl = __webpack_require__(6239);
-      const _utils = __webpack_require__(8569);
-      const _addlocale = __webpack_require__(2800);
-      const _routercontextsharedruntime = __webpack_require__(5575);
-      const _useintersection = __webpack_require__(2655);
-      const _getdomainlocale = __webpack_require__(3398);
-      const _addbasepath = __webpack_require__(7315);
-      const _usemergedref = __webpack_require__(6746);
+      const _resolvehref = __webpack_require__(8698);
+      const _islocalurl = __webpack_require__(4914);
+      const _formaturl = __webpack_require__(2827);
+      const _utils = __webpack_require__(7213);
+      const _addlocale = __webpack_require__(8764);
+      const _routercontextsharedruntime = __webpack_require__(4203);
+      const _approutercontextsharedruntime = __webpack_require__(8437);
+      const _useintersection = __webpack_require__(5347);
+      const _getdomainlocale = __webpack_require__(2042);
+      const _addbasepath = __webpack_require__(2671);
+      const _routerreducertypes = __webpack_require__(6106);
+      const _usemergedref = __webpack_require__(2454);
       const prefetched = new Set();
-      function prefetch(router, href, as, options) {
+      function prefetch(router, href, as, options, appOptions, isAppRouter) {
         if (false) {
         }
-        if (!(0, _islocalurl.isLocalURL)(href)) {
+        // app-router supports external urls out of the box so it shouldn't short-circuit here as support for e.g. `replace` is added in the app-router.
+        if (!isAppRouter && !(0, _islocalurl.isLocalURL)(href)) {
           return;
         }
         // We should only dedupe requests when experimental.optimisticClientCache is
-        // disabled.
-        if (!options.bypassPrefetchedCheck) {
+        // disabled & when we're not using the app router. App router handles
+        // reusing an existing prefetch entry (if it exists) for the same URL.
+        // If we dedupe in here, we will cause a race where different prefetch kinds
+        // to the same URL (ie auto vs true) will cause one to be ignored.
+        if (!options.bypassPrefetchedCheck && !isAppRouter) {
           const locale =
             typeof options.locale !== "undefined"
               ? options.locale
@@ -105,11 +191,20 @@
           // Mark this URL as prefetched.
           prefetched.add(prefetchedKey);
         }
+        const doPrefetch = async () => {
+          if (isAppRouter) {
+            // note that `appRouter.prefetch()` is currently sync,
+            // so we have to wrap this call in an async function to be able to catch() errors below.
+            return router.prefetch(href, appOptions);
+          } else {
+            return router.prefetch(href, as, options);
+          }
+        };
         // Prefetch the JSON page if asked (only in the client)
         // We need to handle a prefetch error here since we may be
         // loading with priority which can reject but we don't
         // want to force navigation since this is only a prefetch
-        router.prefetch(href, as, options).catch((err) => {
+        doPrefetch().catch((err) => {
           if (false) {
           }
         });
@@ -134,14 +229,16 @@
         replace,
         shallow,
         scroll,
-        locale
+        locale,
+        isAppRouter
       ) {
         const { nodeName } = e.currentTarget;
         // anchors inside an svg have a lowercase nodeName
         const isAnchorNodeName = nodeName.toUpperCase() === "A";
         if (
           isAnchorNodeName &&
-          (isModifiedEvent(e) || !(0, _islocalurl.isLocalURL)(href))
+          (isModifiedEvent(e) || // app-router supports external urls out of the box so it shouldn't short-circuit here as support for e.g. `replace` is added in the app-router.
+            (!isAppRouter && !(0, _islocalurl.isLocalURL)(href)))
         ) {
           // ignore click for browser’s default behavior
           return;
@@ -162,7 +259,11 @@
             });
           }
         };
-        navigate();
+        if (isAppRouter) {
+          _react.default.startTransition(navigate);
+        } else {
+          navigate();
+        }
       }
       function formatStringOrUrl(urlObjOrString) {
         if (typeof urlObjOrString === "string") {
@@ -205,14 +306,31 @@
               children: children,
             });
           }
-          const router = _react.default.useContext(
+          const pagesRouter = _react.default.useContext(
             _routercontextsharedruntime.RouterContext
           );
+          const appRouter = _react.default.useContext(
+            _approutercontextsharedruntime.AppRouterContext
+          );
+          const router = pagesRouter != null ? pagesRouter : appRouter;
+          // We're in the app directory if there is no pages router.
+          const isAppRouter = !pagesRouter;
           const prefetchEnabled = prefetchProp !== false;
+          /**
+           * The possible states for prefetch are:
+           * - null: this is the default "auto" mode, where we will prefetch partially if the link is in the viewport
+           * - true: we will prefetch if the link is visible and prefetch the full page, not just partially
+           * - false: we will not prefetch if in the viewport at all
+           */ const appPrefetchKind =
+            prefetchProp === null
+              ? _routerreducertypes.PrefetchKind.AUTO
+              : _routerreducertypes.PrefetchKind.FULL;
+          if (false) {
+          }
           if (false) {
           }
           const { href, as } = _react.default.useMemo(() => {
-            if (!router) {
+            if (!pagesRouter) {
               const resolvedHref = formatStringOrUrl(hrefProp);
               return {
                 href: resolvedHref,
@@ -220,17 +338,17 @@
               };
             }
             const [resolvedHref, resolvedAs] = (0, _resolvehref.resolveHref)(
-              router,
+              pagesRouter,
               hrefProp,
               true
             );
             return {
               href: resolvedHref,
               as: asProp
-                ? (0, _resolvehref.resolveHref)(router, asProp)
+                ? (0, _resolvehref.resolveHref)(pagesRouter, asProp)
                 : resolvedAs || resolvedHref,
             };
-          }, [router, hrefProp, asProp]);
+          }, [pagesRouter, hrefProp, asProp]);
           const previousHref = _react.default.useRef(href);
           const previousAs = _react.default.useRef(as);
           // This will return the first child, if multiple are provided it will throw an error
@@ -280,17 +398,28 @@
               return;
             }
             // Prefetch the URL.
-            prefetch(router, href, as, {
-              locale,
-            });
+            prefetch(
+              router,
+              href,
+              as,
+              {
+                locale,
+              },
+              {
+                kind: appPrefetchKind,
+              },
+              isAppRouter
+            );
           }, [
             as,
             href,
             isVisible,
             locale,
             prefetchEnabled,
-            router == null ? void 0 : router.locale,
+            pagesRouter == null ? void 0 : pagesRouter.locale,
             router,
+            isAppRouter,
+            appPrefetchKind,
           ]);
           const childProps = {
             ref: setRef,
@@ -321,7 +450,8 @@
                 replace,
                 shallow,
                 scroll,
-                locale
+                locale,
+                isAppRouter
               );
             },
             onMouseEnter(e) {
@@ -338,12 +468,27 @@
               if (!router) {
                 return;
               }
-              prefetch(router, href, as, {
-                locale,
-                priority: true,
-                // @see {https://github.com/vercel/next.js/discussions/40268?sort=top#discussioncomment-3572642}
-                bypassPrefetchedCheck: true,
-              });
+              if (
+                (!prefetchEnabled || "production" === "development") &&
+                isAppRouter
+              ) {
+                return;
+              }
+              prefetch(
+                router,
+                href,
+                as,
+                {
+                  locale,
+                  priority: true,
+                  // @see {https://github.com/vercel/next.js/discussions/40268?sort=top#discussioncomment-3572642}
+                  bypassPrefetchedCheck: true,
+                },
+                {
+                  kind: appPrefetchKind,
+                },
+                isAppRouter
+              );
             },
             onTouchStart: false
               ? 0
@@ -364,12 +509,24 @@
                   if (!router) {
                     return;
                   }
-                  prefetch(router, href, as, {
-                    locale,
-                    priority: true,
-                    // @see {https://github.com/vercel/next.js/discussions/40268?sort=top#discussioncomment-3572642}
-                    bypassPrefetchedCheck: true,
-                  });
+                  if (!prefetchEnabled && isAppRouter) {
+                    return;
+                  }
+                  prefetch(
+                    router,
+                    href,
+                    as,
+                    {
+                      locale,
+                      priority: true,
+                      // @see {https://github.com/vercel/next.js/discussions/40268?sort=top#discussioncomment-3572642}
+                      bypassPrefetchedCheck: true,
+                    },
+                    {
+                      kind: appPrefetchKind,
+                    },
+                    isAppRouter
+                  );
                 },
           };
           // If child is an <a> tag and doesn't have a href attribute, or if the 'passHref' property is
@@ -385,18 +542,18 @@
             const curLocale =
               typeof locale !== "undefined"
                 ? locale
-                : router == null
+                : pagesRouter == null
                 ? void 0
-                : router.locale;
+                : pagesRouter.locale;
             // we only render domain locales if we are currently on a domain locale
             // so that locale links are still visitable in development/preview envs
             const localeDomain =
-              (router == null ? void 0 : router.isLocaleDomain) &&
+              (pagesRouter == null ? void 0 : pagesRouter.isLocaleDomain) &&
               (0, _getdomainlocale.getDomainLocale)(
                 as,
                 curLocale,
-                router == null ? void 0 : router.locales,
-                router == null ? void 0 : router.domainLocales
+                pagesRouter == null ? void 0 : pagesRouter.locales,
+                pagesRouter == null ? void 0 : pagesRouter.domainLocales
               );
             childProps.href =
               localeDomain ||
@@ -404,7 +561,7 @@
                 (0, _addlocale.addLocale)(
                   as,
                   curLocale,
-                  router == null ? void 0 : router.defaultLocale
+                  pagesRouter == null ? void 0 : pagesRouter.defaultLocale
                 )
               );
           }
@@ -433,7 +590,7 @@
       /***/
     },
 
-    /***/ 2655: /***/ (module, exports, __webpack_require__) => {
+    /***/ 5347: /***/ (module, exports, __webpack_require__) => {
       "use strict";
 
       Object.defineProperty(exports, "__esModule", {
@@ -446,7 +603,7 @@
         },
       });
       const _react = __webpack_require__(2138);
-      const _requestidlecallback = __webpack_require__(484);
+      const _requestidlecallback = __webpack_require__(7368);
       const hasIntersectionObserver =
         typeof IntersectionObserver === "function";
       const observers = new Map();
@@ -559,7 +716,7 @@
       /***/
     },
 
-    /***/ 6746: /***/ (module, exports, __webpack_require__) => {
+    /***/ 2454: /***/ (module, exports, __webpack_require__) => {
       "use strict";
 
       Object.defineProperty(exports, "__esModule", {
@@ -620,7 +777,7 @@
       /***/
     },
 
-    /***/ 2930: /***/ (
+    /***/ 3336: /***/ (
       __unused_webpack_module,
       __webpack_exports__,
       __webpack_require__
@@ -635,7 +792,7 @@
       /* harmony import */ var react_jsx_runtime__WEBPACK_IMPORTED_MODULE_0__ =
         __webpack_require__(6322);
       /* harmony import */ var next_link__WEBPACK_IMPORTED_MODULE_1__ =
-        __webpack_require__(6661);
+        __webpack_require__(3627);
       /* harmony import */ var next_link__WEBPACK_IMPORTED_MODULE_1___default =
         /*#__PURE__*/ __webpack_require__.n(
           next_link__WEBPACK_IMPORTED_MODULE_1__
@@ -666,12 +823,12 @@
       /***/
     },
 
-    /***/ 6661: /***/ (
+    /***/ 3627: /***/ (
       module,
       __unused_webpack_exports,
       __webpack_require__
     ) => {
-      module.exports = __webpack_require__(6743);
+      module.exports = __webpack_require__(5368);
 
       /***/
     },
@@ -681,7 +838,7 @@
     /******/ var __webpack_exec__ = (moduleId) =>
       __webpack_require__((__webpack_require__.s = moduleId));
     /******/ __webpack_require__.O(0, [636, 6593, 8792], () =>
-      __webpack_exec__(7439)
+      __webpack_exec__(9669)
     );
     /******/ var __webpack_exports__ = __webpack_require__.O();
     /******/ _N_E = __webpack_exports__;

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Commit: d983a22

### Why? As we upgraded create-next-app ESLint to v9, use flat config (with compatible function) for the templates. `eslint.config.mjs`: ```mjs import { dirname } from "path"; import { fileURLToPath } from "url"; import { FlatCompat } from "@eslint/eslintrc"; const __filename = fileURLToPath(import.meta.url); const __dirname = dirname(__filename); const compat = new FlatCompat({ baseDirectory: __dirname, }); const eslintConfig = [...compat.extends("next/core-web-vitals")]; export default eslintConfig; ``` As `import.meta.dirname` was introduced in Node.js version v20.11.0, we can simplify to when on minimum version: ```mjs import { FlatCompat } from "@eslint/eslintrc"; const compat = new FlatCompat({ baseDirectory: import.meta.dirname, }); const eslintConfig = [...compat.extends("next/core-web-vitals")]; export default eslintConfig; ``` But best is that other dependency plugins support flat config so we can upgrade to pure Flat Config as well. Closes NDX-374

devjiwonchoi added 2 commits November 25, 2024 19:34

remove eslintrc.json

b9e6b0b

add eslint.config.mjs

de3b918

ijjk added create-next-app Related to our CLI tool for quickly starting a new Next.js application. created-by: Next.js team PRs by the Next.js team. labels Nov 25, 2024

fix tests

d983a22

ijjk added the tests label Nov 25, 2024

devjiwonchoi marked this pull request as ready for review November 25, 2024 12:09

devjiwonchoi requested review from ijjk and samcx November 25, 2024 12:09

ijjk approved these changes Nov 25, 2024

View reviewed changes

samcx approved these changes Nov 25, 2024

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devjiwonchoi merged commit 82cac69 into canary Nov 25, 2024
114 checks passed

devjiwonchoi deleted the jwn/9ggz branch November 25, 2024 17:32

kennet31526 mentioned this pull request Nov 25, 2024

### Why? krptn/krypton#399

Closed

Marukome0743 mentioned this pull request Nov 25, 2024

chore(cna): switch to .mjs eslint config #72908

Open

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CNA: replace `.eslintrc.json` with `eslint.config.mjs` #73162

CNA: replace `.eslintrc.json` with `eslint.config.mjs` #73162

devjiwonchoi commented Nov 25, 2024 •

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ijjk commented Nov 25, 2024 •

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ijjk commented Nov 25, 2024 •

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CNA: replace .eslintrc.json with eslint.config.mjs #73162

CNA: replace .eslintrc.json with eslint.config.mjs #73162

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devjiwonchoi commented Nov 25, 2024 • edited Loading

Why?

ijjk commented Nov 25, 2024 • edited Loading

Tests Passed

ijjk commented Nov 25, 2024 • edited Loading

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CNA: replace `.eslintrc.json` with `eslint.config.mjs` #73162

CNA: replace `.eslintrc.json` with `eslint.config.mjs` #73162

devjiwonchoi commented Nov 25, 2024 •

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