Ensure mangling is disabled for dev runtime builds

[ijjk]

Just ensures we keep mangling behavior prior to #75294

[ijjk]

Stats from current PR

Default Build (Increase detected ⚠️)

General Overall increase ⚠️

	vercel/next.js canary	vercel/next.js ijjk/disable-dev-mangling	Change
buildDuration	19.4s	16.8s	N/A
buildDurationCached	15.8s	12.9s	N/A
nodeModulesSize	389 MB	392 MB	⚠️ +2.9 MB
nextStartRea..uration (ms)	443ms	447ms	N/A

Client Bundles (main, webpack)

	vercel/next.js canary	vercel/next.js ijjk/disable-dev-mangling	Change
5306-HASH.js gzip	54.1 kB	54.1 kB	N/A
8276.HASH.js gzip	169 B	168 B	N/A
8377-HASH.js gzip	5.46 kB	5.46 kB	N/A
bccd1874-HASH.js gzip	52.9 kB	52.9 kB	N/A
framework-HASH.js gzip	57.5 kB	57.5 kB	N/A
main-app-HASH.js gzip	240 B	242 B	N/A
main-HASH.js gzip	34.6 kB	34.6 kB	N/A
webpack-HASH.js gzip	1.71 kB	1.71 kB	N/A
Overall change	0 B	0 B	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	vercel/next.js ijjk/disable-dev-mangling	Change
polyfills-HASH.js gzip	39.4 kB	39.4 kB	✓
Overall change	39.4 kB	39.4 kB	✓

Client Pages

	vercel/next.js canary	vercel/next.js ijjk/disable-dev-mangling	Change
_app-HASH.js gzip	193 B	193 B	✓
_error-HASH.js gzip	193 B	193 B	✓
amp-HASH.js gzip	512 B	510 B	N/A
css-HASH.js gzip	343 B	342 B	N/A
dynamic-HASH.js gzip	1.84 kB	1.84 kB	✓
edge-ssr-HASH.js gzip	265 B	265 B	✓
head-HASH.js gzip	363 B	362 B	N/A
hooks-HASH.js gzip	393 B	392 B	N/A
image-HASH.js gzip	4.59 kB	4.58 kB	N/A
index-HASH.js gzip	268 B	268 B	✓
link-HASH.js gzip	2.35 kB	2.35 kB	N/A
routerDirect..HASH.js gzip	328 B	328 B	✓
script-HASH.js gzip	397 B	397 B	✓
withRouter-HASH.js gzip	323 B	326 B	N/A
1afbb74e6ecf..834.css gzip	106 B	106 B	✓
Overall change	3.59 kB	3.59 kB	✓

Client Build Manifests

	vercel/next.js canary	vercel/next.js ijjk/disable-dev-mangling	Change
_buildManifest.js gzip	748 B	747 B	N/A
Overall change	0 B	0 B	✓

Rendered Page Sizes

	vercel/next.js canary	vercel/next.js ijjk/disable-dev-mangling	Change
index.html gzip	524 B	524 B	✓
link.html gzip	539 B	538 B	N/A
withRouter.html gzip	520 B	520 B	✓
Overall change	1.04 kB	1.04 kB	✓

Edge SSR bundle Size

	vercel/next.js canary	vercel/next.js ijjk/disable-dev-mangling	Change
edge-ssr.js gzip	129 kB	129 kB	N/A
page.js gzip	210 kB	210 kB	N/A
Overall change	0 B	0 B	✓

Middleware size

	vercel/next.js canary	vercel/next.js ijjk/disable-dev-mangling	Change
middleware-b..fest.js gzip	670 B	666 B	N/A
middleware-r..fest.js gzip	155 B	156 B	N/A
middleware.js gzip	31.3 kB	31.3 kB	N/A
edge-runtime..pack.js gzip	844 B	844 B	✓
Overall change	844 B	844 B	✓

Next Runtimes Overall increase ⚠️

	vercel/next.js canary	vercel/next.js ijjk/disable-dev-mangling	Change
app-page-exp...dev.js gzip	308 kB	385 kB	⚠️ +76.5 kB
app-page-exp..prod.js gzip	131 kB	131 kB	✓
app-page-tur..prod.js gzip	144 kB	144 kB	✓
app-page-tur..prod.js gzip	140 kB	140 kB	✓
app-page.run...dev.js gzip	300 kB	372 kB	⚠️ +72.4 kB
app-page.run..prod.js gzip	128 kB	128 kB	✓
app-route-ex...dev.js gzip	31.8 kB	39.4 kB	⚠️ +7.61 kB
app-route-ex..prod.js gzip	25 kB	25 kB	✓
app-route-tu..prod.js gzip	25 kB	25 kB	✓
app-route-tu..prod.js gzip	24.8 kB	24.8 kB	✓
app-route.ru...dev.js gzip	33.1 kB	41 kB	⚠️ +7.93 kB
app-route.ru..prod.js gzip	24.8 kB	24.8 kB	✓
dist_client_...dev.js gzip	314 B	326 B	N/A
dist_client_...dev.js gzip	307 B	318 B	N/A
pages-api-tu..prod.js gzip	8.81 kB	8.81 kB	✓
pages-api.ru...dev.js gzip	9.82 kB	11.5 kB	⚠️ +1.66 kB
pages-api.ru..prod.js gzip	8.8 kB	8.8 kB	✓
pages-turbo...prod.js gzip	21.6 kB	21.6 kB	N/A
pages.runtim...dev.js gzip	26.1 kB	31.3 kB	⚠️ +5.27 kB
pages.runtim..prod.js gzip	21.6 kB	21.6 kB	✓
server.runti..prod.js gzip	73.7 kB	73.7 kB	✓
Overall change	1.46 MB	1.64 MB	⚠️ +171 kB

build cache Overall increase ⚠️

	vercel/next.js canary	vercel/next.js ijjk/disable-dev-mangling	Change
0.pack gzip	2.1 MB	2.1 MB	⚠️ +2.19 kB
index.pack gzip	75.5 kB	74.7 kB	N/A
Overall change	2.1 MB	2.1 MB	⚠️ +2.19 kB

Diff details

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@@ -1,2 +1,2 @@
-"use strict";exports.ids=["dist_client_dev_noop-turbopack-hmr_js"],exports.modules={"./dist/client/dev/noop-turbopack-hmr.js":function(e,t){function o(){}Object.defineProperty(t,"__esModule",{value:!0}),Object.defineProperty(t,"connect",{enumerable:!0,get:function(){return o}}),("function"==typeof t.default||"object"==typeof t.default&&null!==t.default)&&void 0===t.default.__esModule&&(Object.defineProperty(t.default,"__esModule",{value:!0}),Object.assign(t.default,t),e.exports=t.default)}};
+"use strict";exports.ids=["dist_client_dev_noop-turbopack-hmr_js"],exports.modules={"./dist/client/dev/noop-turbopack-hmr.js":function(module,exports1){function connect(){}Object.defineProperty(exports1,"__esModule",{value:!0}),Object.defineProperty(exports1,"connect",{enumerable:!0,get:function(){return connect}}),("function"==typeof exports1.default||"object"==typeof exports1.default&&null!==exports1.default)&&void 0===exports1.default.__esModule&&(Object.defineProperty(exports1.default,"__esModule",{value:!0}),Object.assign(exports1.default,exports1),module.exports=exports1.default)}};
 //# sourceMappingURL=dist_client_dev_noop-turbopack-hmr_js-experimental.runtime.dev.js.map
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@@ -1,2 +1,2 @@
-"use strict";exports.ids=["dist_client_dev_noop-turbopack-hmr_js"],exports.modules={"./dist/client/dev/noop-turbopack-hmr.js":function(e,t){function o(){}Object.defineProperty(t,"__esModule",{value:!0}),Object.defineProperty(t,"connect",{enumerable:!0,get:function(){return o}}),("function"==typeof t.default||"object"==typeof t.default&&null!==t.default)&&void 0===t.default.__esModule&&(Object.defineProperty(t.default,"__esModule",{value:!0}),Object.assign(t.default,t),e.exports=t.default)}};
+"use strict";exports.ids=["dist_client_dev_noop-turbopack-hmr_js"],exports.modules={"./dist/client/dev/noop-turbopack-hmr.js":function(module,exports1){function connect(){}Object.defineProperty(exports1,"__esModule",{value:!0}),Object.defineProperty(exports1,"connect",{enumerable:!0,get:function(){return connect}}),("function"==typeof exports1.default||"object"==typeof exports1.default&&null!==exports1.default)&&void 0===exports1.default.__esModule&&(Object.defineProperty(exports1.default,"__esModule",{value:!0}),Object.assign(exports1.default,exports1),module.exports=exports1.default)}};
 //# sourceMappingURL=dist_client_dev_noop-turbopack-hmr_js.runtime.dev.js.map
\ No newline at end of file

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Commit: a2dfe4d