homepage: https://nodejs.org
tagline: |
Node.jsĀ® is a JavaScript runtime built on Chrome's V8 JavaScript engine.
-description: |
- Node is great for simple, snappy HTTP(S) servers, and for stitching APIs together with minimal fuss or muss.
-
- Installing node via webi will:
-
- - pick a compatible version from the [Node Releases API](https://nodejs.org/dist/index.tab)
- - download and unpack to `$HOME/.local/opt/node/`
- - update your `PATH` in `$HOME/.config/envman/PATH.env`
- - run `npm config set scripts-prepend-node-path=true`
- - (prevents conflicts with other installed node versions)
- - absolutely leave system file permisions alone
- - (no dreaded `sudo npm` permission errors)
---
-Hello World
+To update or switch versions, run `webi node@<tag>`. \
+(you can use `@lts` for long-term support, `@beta` for pre-releases, or `@x.y.z`
+for a specific version)
+
+## Cheat Sheet
+
+> Node is great for simple, snappy HTTP(S) servers, and for stitching APIs
+> together with minimal fuss or muss.
+
+Installing node via webi will:
+
+- pick a compatible version from the
+ [Node Releases API](https://nodejs.org/dist/index.tab)
+- download and unpack to `$HOME/.local/opt/node/`
+- update your `PATH` in `$HOME/.config/envman/PATH.env`
+- run `npm config set scripts-prepend-node-path=true`
+ - (prevents conflicts with other installed node versions)
+- absolutely leave system file permissions alone
+ - (no dreaded `sudo npm` permission errors)
+
+### Hello World
```bash
node -e 'console.log("Hello, World!")'
> Hello, World!
```
-A Simple Web Server
+### A Simple Web Server
`server.js`:
node server.js
```
-An Express App
+### Generate a Secure Random Key
+
+This generates a hex-encoded 128-bit random key.
+
+```bash
+node -p 'crypto.randomBytes(16).toString("hex")'
+```
+
+This generates a url-safe base64 256-bit random key.
+
+```bash
+node -p 'crypto.randomBytes(32).toString("base64")
+ .replace(/\+/g, "-").replace(/\//g, "_").replace(/=/g, "")'
+```
+
+### An Express App
```bash
mkdir my-server
-pushd my-server
+pushd my-server/
npm init
npm install --save express
```
var app = express();
app.use('/', function (req, res, next) {
- res.end("Hello, World!");
+ res.end('Hello, World!');
});
module.exports = app;