To generate guid/uuid in TypeScript Node.js app, we use the uuid module.
For instance, we write
import { v4 as uuid } from "uuid";
const id: string = uuid();
to call the uuid function to return a uuid string.
We run
npm install uuid
npm install --save-dev @types/uuid
to install the uuid package and save the type definition for the package as a dev dependency.
To fix ReferenceError: webpack is not defined error with JavaScript, we require the webpack module.
For instance, we write
const webpack = require("webpack");
to require the webpack module with require.
To run multiple statements in one query with node-mysql, we call the query method.
For instance, we write
connection.query("SELECT ?; SELECT ?", [1, 2], (err, results) => {
if (err) {
throw err;
}
console.log(...results);
});
to call query with the select statements separated by a semicolon.
the array are the values that fill the question mark placeholders.
And we get the results from the results array.
To fix the NPM "ENOENT: no such file or directory error" when installing Sails.js dependencies error with Node, we remove the package-lock.json file.
We remove the package-lock.json file and then re-run
npm install
to fix the error.
To include CSS files using Node, Express, and ejs, we serve them as static files.
For instance, we write
app.use(express.static(__dirname + "/public"));
to serve the /public folder as a static files folder with express.static.
Then we add the css file in our ejs template with
<link rel="stylesheet" type="text/css" href="css/style.css" />