Heroku Node.js Support | Heroku Dev Center

This document describes the general behavior of Heroku as it relates to the recognition and execution of Node.js applications. For a more detailed explanation of how to deploy an application, see Getting Started on Heroku with Node.js. Activation The Heroku Node.js buildpack is used when the application has apackage.json file in the root directory. Node.js Runtimes Node versions adhere to Semver,

[YassLab]

“Skip pruning If you need access to packages declared under devDependencies in a different buildpack or at runtime, then you can set NPM_CONFIG_PRODUCTION=false or YARN_PRODUCTION=false to skip the pruning step. heroku config:set NPM_CONFIG_PRODUCTION=false YARN_PRODUCTION=false ”

[hirorock]

`devDependencies`をインストールするかしないかは、NPM_CONFIG_PRODUCTIONの設定による heroku https://qiita.com/verytired/items/0e600b96866867c0cb32

[Hiro_Matsuno]

“If”

[bouzuya]

Heroku も yarn サポートしてた

[syonx]

npm install は自動で走る。カスタムビルドプロセスも書ける。devDependencies 注意。

[kjw_junichi]

herokuでもkoaは試せるみたいだ