Vue.jsのWebアプリをHerokuでデプロイしようとすると、npmエラーが発生する

Question

閲覧ありがとうございます????
どうしても自己解決できず、サイトがデプロイできなくて困っているのでご助言お願い致します…

環境

• Vue.js@3.11.0
• Vue CLI
• Vue Router
• Vuetify
• Pug

具体的なエラー内容

• 初回デプロイ時、npm ERR! missing script: startとエラーが出た
• ググった結果package.jsonにscripts/startが記載されていない為と判明した
• そこで再度ググり、scripts内に"start": "node app.js"と追記した
• しかし今度は下記エラーが出た

2019-09-10T16:09:05.657012+00:00 heroku[web.1]: State changed from crashed to starting
2019-09-10T16:09:11.855249+00:00 heroku[web.1]: State changed from crashed to starting
2019-09-10T16:09:14.413610+00:00 heroku[web.1]: Starting process with command `npm start`
2019-09-10T16:09:16.935958+00:00 heroku[web.1]: State changed from starting to crashed
2019-09-10T16:09:16.944014+00:00 heroku[web.1]: State changed from crashed to starting
2019-09-10T16:09:17.403296+00:00 heroku[web.1]: Process exited with status 1
2019-09-10T16:09:17.130102+00:00 app[web.1]:
2019-09-10T16:09:17.130143+00:00 app[web.1]: > joe_portfolio@0.1.0 start /app
2019-09-10T16:09:17.130146+00:00 app[web.1]: > node app.js
2019-09-10T16:09:17.130148+00:00 app[web.1]:
2019-09-10T16:09:17.297518+00:00 app[web.1]: internal/modules/cjs/loader.js:638
2019-09-10T16:09:17.297522+00:00 app[web.1]: throw err;
2019-09-10T16:09:17.297524+00:00 app[web.1]: ^
2019-09-10T16:09:17.297526+00:00 app[web.1]:
2019-09-10T16:09:17.297528+00:00 app[web.1]: Error: Cannot find module '/app/app.js'
2019-09-10T16:09:17.297531+00:00 app[web.1]: at Function.Module._resolveFilename (internal/modules/cjs/loader.js:636:15)
2019-09-10T16:09:17.297533+00:00 app[web.1]: at Function.Module._load (internal/modules/cjs/loader.js:562:25)
2019-09-10T16:09:17.297535+00:00 app[web.1]: at Function.Module.runMain (internal/modules/cjs/loader.js:831:12)
2019-09-10T16:09:17.297537+00:00 app[web.1]: at startup (internal/bootstrap/node.js:283:19)
2019-09-10T16:09:17.297539+00:00 app[web.1]: at bootstrapNodeJSCore (internal/bootstrap/node.js:622:3)
2019-09-10T16:09:17.310468+00:00 app[web.1]: npm ERR! code ELIFECYCLE
2019-09-10T16:09:17.311114+00:00 app[web.1]: npm ERR! errno 1
2019-09-10T16:09:17.313825+00:00 app[web.1]: npm ERR! joe_portfolio@0.1.0 start: `node app.js`
2019-09-10T16:09:17.314158+00:00 app[web.1]: npm ERR! Exit status 1
2019-09-10T16:09:17.314670+00:00 app[web.1]: npm ERR!
2019-09-10T16:09:17.315211+00:00 app[web.1]: npm ERR! Failed at the joe_portfolio@0.1.0 start script.
2019-09-10T16:09:17.315543+00:00 app[web.1]: npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
2019-09-10T16:09:17.327378+00:00 app[web.1]:
2019-09-10T16:09:17.327661+00:00 app[web.1]: npm ERR! A complete log of this run can be found in:
2019-09-10T16:09:17.327821+00:00 app[web.1]: npm ERR!     /app/.npm/_logs/2019-09-10T16_09_17_318Z-debug.log
2019-09-10T16:09:25.990815+00:00 heroku[web.1]: Starting process with command `npm start`
2019-09-10T16:09:28.513314+00:00 heroku[web.1]: State changed from starting to crashed
2019-09-10T16:09:28.413181+00:00 app[web.1]:
2019-09-10T16:09:28.417128+00:00 app[web.1]: > joe_portfolio@0.1.0 start /app
2019-09-10T16:09:28.417131+00:00 app[web.1]: > node app.js
2019-09-10T16:09:28.417133+00:00 app[web.1]:
2019-09-10T16:09:28.551214+00:00 app[web.1]: internal/modules/cjs/loader.js:638
2019-09-10T16:09:28.551219+00:00 app[web.1]: throw err;
2019-09-10T16:09:28.551221+00:00 app[web.1]: ^
2019-09-10T16:09:28.551223+00:00 app[web.1]:
2019-09-10T16:09:28.551225+00:00 app[web.1]: Error: Cannot find module '/app/app.js'
2019-09-10T16:09:28.551228+00:00 app[web.1]: at Function.Module._resolveFilename (internal/modules/cjs/loader.js:636:15)
2019-09-10T16:09:28.551230+00:00 app[web.1]: at Function.Module._load (internal/modules/cjs/loader.js:562:25)
2019-09-10T16:09:28.551232+00:00 app[web.1]: at Function.Module.runMain (internal/modules/cjs/loader.js:831:12)
2019-09-10T16:09:28.551237+00:00 app[web.1]: at startup (internal/bootstrap/node.js:283:19)
2019-09-10T16:09:28.551239+00:00 app[web.1]: at bootstrapNodeJSCore (internal/bootstrap/node.js:622:3)
2019-09-10T16:09:28.561407+00:00 app[web.1]: npm ERR! code ELIFECYCLE
2019-09-10T16:09:28.562235+00:00 app[web.1]: npm ERR! errno 1
2019-09-10T16:09:28.564822+00:00 app[web.1]: npm ERR! joe_portfolio@0.1.0 start: `node app.js`
2019-09-10T16:09:28.565072+00:00 app[web.1]: npm ERR! Exit status 1
2019-09-10T16:09:28.565563+00:00 app[web.1]: npm ERR!
2019-09-10T16:09:28.565763+00:00 app[web.1]: npm ERR! Failed at the joe_portfolio@0.1.0 start script.
2019-09-10T16:09:28.565946+00:00 app[web.1]: npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
2019-09-10T16:09:28.573700+00:00 app[web.1]:
2019-09-10T16:09:28.574231+00:00 app[web.1]: npm ERR! A complete log of this run can be found in:
2019-09-10T16:09:28.574534+00:00 app[web.1]: npm ERR!     /app/.npm/_logs/2019-09-10T16_09_28_568Z-debug.log
2019-09-10T16:09:28.630295+00:00 heroku[web.1]: Process exited with status 1
2019-09-10T16:09:29.141200+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=portfolio-joe.herokuapp.com request_id=a01d5cb4-9326-4918-98e6-299482f8bbca fwd="175.132.210.196" dyno= connect= service= status=503 bytes= protocol=https
2019-09-10T16:09:31.497326+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=portfolio-joe.herokuapp.com request_id=f9280532-1eb0-4096-acd8-c5188c54d2d8 fwd="175.132.210.196" dyno= connect= service= status=503 bytes= protocol=https

考えられるエラー原因

• 全てyarnでインストールしたつもりだが、どこかでnpmが混ざっておかしくなった
• スタート時、自分用の上記環境を揃えたリポジトリをcloneしてから開発したせいでおかしくなった（そのリポジトリを用いた他のアプリは正常にデプロイできました）

コード

• 今回のコード
• 自分用の上記環境を揃えたリポジトリ

Answer 1

app.jsが存在しないことが原因です。
herokuで動作させるために、expressを入れて「app.js」にexpressの起動処理を記述してください。

↓の記事が参考になるかと思います。
https://qiita.com/akirakudo/items/f63322f6851feef3d9e4

Comments

[jonpili]

大変ありがとうございます????
こちらで成功しました！！