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express-initialize
Advanced tools
A simple Express app initializer.
Install it with NPM or Yarn:
$ npm install --save express-initialize
$ yarn add express-initialize
Everything is done in the app.js file:
// app/app.js
const express = require('express');
const handlebars = require('express-handlebars');
const orm = require('orm');
const app = express();
const hbs = handlebars.create({
defaultLayout: 'main',
helpers: {
someFunction: () => { return 'Something'; }
},
// More configuration etc.
});
app.engine('handlebars', hbs.engine);
app.set('view engine', 'handlebars');
app.use(express.static('./static'));
app.use(compression());
app.get('/home', (request, response) => {
response.render('home');
});
app.get('/other-page', (request, response) => {
response.render('other-page');
});
orm.connect('mysql://root:password@host/database')
.then(connection => {
// etc.
})
.catch(console.error);
app.listen(80);
Everything is moved to separate files:
// app/app.js
const express = require('express');
const expressInitialize = require('express-initialize');
const app = express();
const initializers = getInitializers(); // Load the initializers
expressInitialize.initialize(app, initializers)
.then(() => {
app.listen(80);
})
.catch(console.error);
The function initialize
takes two arguments: the Express app that will be passed to the initializers and an array containing the initializers.
An initializer is an object which can have three properties:
Name | Type | Description |
---|---|---|
name | string | Name of the initializer, for usage with after . |
after | string or string[] | Name(s) of the initializer(s) after which the initializer should be run. |
configure | function | The function that will be run, takes app as argument and may return a Promise. |
For example, a file for Handlebars.
// app/initializers/handlebars.js
module.exports = {
configure: app => {
const hbs = handlebars.create({
defaultLayout: 'main',
helpers: {
someFunction: () => { return 'Something'; }
},
// More configuration etc.
});
app.engine('handlebars', hbs.engine);
app.set('view engine', 'handlebars');
}
};
You can also return a Promise.
// app/initializers/database.js
module.exports = {
configure: app => {
return new Promise((resolve, reject) => {
orm.connect('mysql://root:password@host/database')
.then(connection => {
// do something with connection
resolve();
})
.catch(reject);
});
}
}
Or specify what initializers have to run first.
// app/initializers/routes.js
module.exports = {
after: 'middleware',
configure: app => {
app.get('/home', (request, response) => {
response.render('home');
});
}
}
FAQs
A simple Express app initializer
We found that express-initialize demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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