expressjsHow do I use Express.js to parse YAML files?

Express.js is a web application framework for Node.js that is used for building web applications. It can be used to parse YAML files using the js-yaml module.

const express = require('express');
const yaml = require('js-yaml');

const app = express();

app.get('/', (req, res) => {
  const yamlString = `
  a: 1
  b: 2
  `;
  const data = yaml.load(yamlString);
  res.send(data);
});

app.listen(3000);

Output example

{ a: 1, b: 2 }

The code above uses the following parts:

1. const express = require('express'); - This imports the Express.js module.
2. const yaml = require('js-yaml'); - This imports the js-yaml module, which is used to parse YAML files.
3. const app = express(); - This creates an Express.js application.
4. app.get('/', (req, res) => { - This is a route handler for the root path '/' that is triggered when a GET request is sent to the server.
5. const yamlString = - This is a string containing a YAML document.
6. yaml.load(yamlString) - This parses the YAML string and returns an object.
7. res.send(data); - This sends the parsed data as a response.
8. app.listen(3000); - This starts the server on port 3000.

Helpful links

• Express.js
• js-yaml

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