Introduction to `read-pkg-up`

`read-pkg-up` is a powerful Node.js package that allows developers to read the package.json file by traversing up the file structure. It is particularly useful for various automation scripts and utility tools.

Installation

  
    npm install read-pkg-up
    # or using yarn
    yarn add read-pkg-up
  

API Examples

The `read-pkg-up` package provides several APIs that can be very helpful for developers. Below are some examples:

Example 1: Basic Usage

  
    const readPkgUp = require('read-pkg-up');

    (async () => {
      const result = await readPkgUp();
      console.log(result);
    })();
  

Example 2: Synchronous Usage

  
    const readPkgUp = require('read-pkg-up');

    const result = readPkgUp.sync();
    console.log(result);
  

Example 3: Custom Configuration

  
    const readPkgUp = require('read-pkg-up');

    (async () => {
      const result = await readPkgUp({ cwd: '/path/to/start' });
      console.log(result);
    })();
  

App Example

Let’s see an example of an application that uses `read-pkg-up` to retrieve package details:

  
    const express = require('express');
    const readPkgUp = require('read-pkg-up');

    const app = express();

    app.get('/package', async (req, res) => {
      try {
        const { packageJson } = await readPkgUp();
        res.json(packageJson);
      } catch (error) {
        res.status(500).send(error.toString());
      }
    });

    const PORT = 3000;
    app.listen(PORT, () => {
      console.log(`Server is running on port ${PORT}`);
    });
  

Now, when you start the server and navigate to http://localhost:3000/package, you’ll get the package.json contents in JSON format.

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