ジェネレーターのインストール&必要なファイルの作成
$ npm install -g express-generator
/home/ubuntu/.nodebrew/node/v4.7.0/bin/express -> /home/ubuntu/.nodebrew/node/v4.7.0/lib/node_modules/express-generator/bin/express-cli.js
+ express-generator@4.15.5
added 6 packages in 0.99s
$ cd workspace/$ express express-study
warning: the default view engine will not be jade in future releases
warning: use `--view=jade' or `--help' for additional options
create : express-study
create : express-study/package.json
create : express-study/app.js
create : express-study/public
create : express-study/routes
create : express-study/routes/index.js
create : express-study/routes/users.js
create : express-study/views
create : express-study/views/index.jade
create : express-study/views/layout.jade
create : express-study/views/error.jade
create : express-study/bin
create : express-study/bin/www
create : express-study/public/javascripts
create : express-study/public/images
create : express-study/public/stylesheets
create : express-study/public/stylesheets/style.css
install dependencies:
$ cd express-study && npm install
run the app:
$ DEBUG=express-study:* npm start
npmモジュールのインストール
cd express-study
npm install
起動
$ DEBUG=express-study:* PORT=8000 npm start
> express-study@0.0.0 start /home/ubuntu/workspace/express-study
> node ./bin/www
express-study:server Listening on port 8000 +0ms
- 「npm スクリプト名」 というコマンドでpackage.jsonで設定されたコマンドが実行される。package.jsonにはこんな箇所がある。
"scripts": {
"start": "node ./bin/www"
},
試しにExpressのdebugモジュールの機能を使ってみる
'use strict';
const debug = require('debug');
const debugInfo = debug('app:info');
setInterval(() => {
debugInfo('some information');
}, 1000);
const debugError = debug('app:error');
setInterval(() => {
debugError('error!');
}, 2000);
- 実行(複数ログ出力するにはカンマで繋げてコマンドを実行する)
$ DEBUG=express-study:*,app:* PORT=8000 npm start
> express-study@0.0.0 start /home/ubuntu/workspace/express-study
> node ./bin/www
express-study:server Listening on port 8000 +0ms
app:info some information +907ms
app:error error! +997ms
app:info some information +9ms
app:info some information +1s
app:error error! +990ms
app:info some information +13ms
app:info some information +1s
app:error error! +987ms
app:info some information +14ms
app:info some information +1s
app:error error! +985ms
app:info some information +17ms
app:info some information +1s
app:error error! +982ms
app:info some information +23ms
app:info some information +1s
app:error error! +978ms
app:info some information +25ms