Last Sync: 2022-07-12 19:30:03

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tactonbishop 2022-07-12 19:30:03 +01:00
parent 5f4bb25404
commit e5061e6af1
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@ -6,7 +6,7 @@ tags:
- node-modules - node-modules
--- ---
Like Bash, Node utilises [environment variables](../Shell%20Scripting/Environmental%20and%20shell%20variables.md) and the syntax is the same since Node must run in a Bash environment or emulator (like GitBash on Windows). # Ports
When working in development we are able to specify the specific port from which we want top serve our application. In production, we do not always have this control: the port will most likely be set by the provider of the server environment. When working in development we are able to specify the specific port from which we want top serve our application. In production, we do not always have this control: the port will most likely be set by the provider of the server environment.
@ -14,8 +14,6 @@ While we may not know the specific port, whichever it is, it will be accessible
````js ````js
const port = process.env.PORT || 3000; const port = process.env.PORT || 3000;
app.listen(port, () => console.log(`Listening on ${port}`));
```` ````
This way, if a port is set by the provider it will use it. If not, it will fall back to 3000. This way, if a port is set by the provider it will use it. If not, it will fall back to 3000.

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---
tags:
- Programming_Languages
- backend
- node-js
- middleware
---
# Morgan
Morgan is middleware that is used to log HTTP requests to the Express instance.
```js
app.use(morgan('dev'))
```
With Morgan in place, every time we run a request it will be logged on the console that is running our Node application, e.g:
```plain
GET /api/courses 200 95 - 1.774 ms
```
This uses the `tiny` default which logs the bare minimum giving us: request type; endpoint; response code; and time to execute. But there are more verbose settings.
It defaults to logging on the console but can also be configured to write to a log file.

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---
tags:
- Programming_Languages
- backend
- node-js
---
# Nodemon
We don't want to have to restart the local server every time we make a change to our files. We can use `nodemon` instead of `node` when running our `index.js` file so that file-changes are immediately registered without the need for a restart.
This is a wrapper around the `node` command so it doesn't require any configuration. Once installed, update your start script from `node index.js` to `nodemon index.js`.