Next.jsのv14系はオブジェクトのkey名に日本語の中黒(・)を使うとbuildがコケるみたい

v13系とv15系ではこのエラーは発生しなかった。回避策としてはオブジェクトのkey名に中黒を使わないか、バージョンをv14以外にする。

page.tsx

/** Add your relevant code here for the issue to reproduce */

const JapaneseMiddleDotKeyJson = {
  "a・b": "hoge",
};

export default function Home() {
  return <span>{JapaneseMiddleDotKeyJson["a・b"]}</span>;
}

npm run build

ターミナル結果

> build
> next build

  ▲ Next.js 14.2.4

   Creating an optimized production build ...
 ✓ Compiled successfully
 ✓ Linting and checking validity of types    
   Collecting page data  ../project/workspace/.next/server/app/page.js:1
(()=>{var e={};e.id=931,e.ids=[931],e.modules={7849:e=>{"use strict";e.exports=require("next/dist/client/components/action-async-storage.external")},2934:e=>{"use strict";e.exports=require("next/dist/client/components/action-async-storage.external.js")},5403:e=>{"use strict";e.exports=require("next/dist/client/components/request-async-storage.external")},4580:e=>{"use strict";e.exports=require("next/dist/client/components/request-async-storage.external.js")},4749:e=>{"use strict";e.exports=require("next/dist/client/components/static-generation-async-storage.external")},5869:e=>{"use strict";e.exports=require("next/dist/client/components/static-generation-async-storage.external.js")},399:e=>{"use strict";e.exports=require("next/dist/compiled/next-server/app-page.runtime.prod.js")},1017:e=>{"use strict";e.exports=require("path")},7310:e=>{"use strict";e.exports=require("url")},6088:(e,t,r)=>{"use strict";r.r(t),r.d(t,{GlobalError:()=>a.a,__next_app__:()=>p,originalPathname:()=>f,pages:()=>l,routeModule:()=>d,tree:()=>c}),r(908),r(1506),r(5866);var n=r(3191),i=r(8716),o=r(7922),a=r.n(o),s=r(5231),u={};for(let e in s)0>["default","tree","pages","GlobalError","originalPathname","__next_app__","routeModule"].indexOf(e)&&(u[e]=()=>s[e]);r.d(t,u);let c=["",{children:["__PAGE__",{},{page:[()=>Promise.resolve().then(r.bind(r,908)),"/project/workspace/app/page.tsx"],metadata:{icon:[async e=>(await Promise.resolve().then(r.bind(r,7481))).default(e)],apple:[],openGraph:[],twitter:[],manifest:void 0}}]},{layout:[()=>Promise.resolve().then(r.bind(r,1506)),"/project/workspace/app/layout.tsx"],"not-found":[()=>Promise.resolve().then(r.t.bind(r,5866,23)),"next/dist/client/components/not-found-error"],metadata:{icon:[async e=>(await Promise.resolve().then(r.bind(r,7481))).default(e)],apple:[],openGraph:[],twitter:[],manifest:void 0}}],l=["/project/workspace/app/page.tsx"],f="/page",p={require:r,loadChunk:()=>Promise.resolve()},d=new n.AppPageRouteModule({definition:{kind:i.x.APP_PAGE,page:"/page",pathname:"/",bundlePath:"",filename:"",appPaths:[]},userland:{loaderTree:c}})},9784:(e,t,r)=>{Promise.resolve().then(r.t.bind(r,2994,23)),Promise.resolve().then(r.t.bind(r,6114,23)),Promise.resolve().then(r.t.bind(r,9727,23)),Promise.resolve().then(r.t.bind(r,9671,23)),Promise.resolve().then(r.t.bind(r,1868,23)),Promise.resolve().then(r.t.bind(r,4759,23))},5303:()=>{},1506:(e,t,r)=>{"use strict";r.r(t),r.d(t,{default:()=>i});var n=r(9510);function i({children:e}){return(0,n.jsxs)("html",{children:[n.jsx("head",{}),n.jsx("body",{children:e})]})}},908:(e,t,r)=>{"use strict";r.r(t),r.d(t,{default:()=>o});var n=r(9510);let i={a・b:"hoge"};function o(){return n.jsx("span",{children:i["a・b"]})}},338:(e,t)=>{"use strict";Object.defineProperty(t,"__esModule",{value:!0}),function(e,t){for(var r in t)Object.defineProperty(e,r,{enumerable:!0,get:t[r]})}(t,{ACTION:function(){return n},FLIGHT_PARAMETERS:function(){return u},NEXT_DID_POSTPONE_HEADER:function(){return l},NEXT_ROUTER_PREFETCH_HEADER:function(){return o},NEXT_ROUTER_STATE_TREE:function(){return i},NEXT_RSC_UNION_QUERY:function(){return c},NEXT_URL:function(){return a},RSC_CONTENT_TYPE_HEADER:function(){return s},RSC_HEADER:function(){return r}});let r="RSC",n="Next-Action",i="Next-Router-State-Tree",o="Next-Router-Prefetch",a="Next-Url",s="text/x-component",u=[[r],[i],[o]],c="_rsc",l="x-nextjs-postponed";("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)},7255:e=>{(()=>{"use strict";"undefined"!=typeof __nccwpck_require__&&(__nccwpck_require__.ab=__dirname+"/");var t={};(()=>{/*!                                                                                     

SyntaxError: Invalid or unexpected token
    at internalCompileFunction (node:internal/vm:73:18)
    at wrapSafe (node:internal/modules/cjs/loader:1153:20)
    at Module._compile (node:internal/modules/cjs/loader:1205:27)
    at Module._extensions..js (node:internal/modules/cjs/loader:1295:10)
    at Module.load (node:internal/modules/cjs/loader:1091:32)
    at Module._load (node:internal/modules/cjs/loader:938:12)
    at Module.require (node:internal/modules/cjs/loader:1115:19)
    at mod.require (/project/workspace/node_modules/next/dist/server/require-hook.js:65:28)
    at require (node:internal/modules/helpers:130:18)
    at requirePage (/project/workspace/node_modules/next/dist/server/require.js:109:84)

> Build error occurred
Error: Failed to collect page data for /
    at /project/workspace/node_modules/next/dist/build/utils.js:1268:15
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5) {
  type: 'Error'
}
   Collecting page data  .