Node.js __filename object

The __filename in the Node.js returns the filename of the code which is executed. It gives the absolute path of the code file. The following approach covers how to implement __filename in the NodeJS project.

Syntax:

console.log(__filename)

Prerequisites:

• Basic knowledge of Node.js
• Node.js installed (version 12+)
• NPM installed (version 6+)

Return Value: It returns the absolute filename of the current module.

Example 1: Create a JavaScript file index.js and write down the following code:

index.js

// Node.js code to demonstrate the absolute
// file name of the current Module.
console.log("Filename of the current file is: ",
    __filename);

Run the index.js file using the following command:

node index.js

Output:

Filename of the current file is:  
  C:\Users\Pallavi\Desktop\node_func\app.js

Example 2:

index.js

// Node.js code to demonstrate the absolute
// file name of the current Module

console.log(__filename);

// To show to parts of file using filename.
const parts = __filename.split(/[\\/]/);
console.log( "This the all the parts "
    + "present in file :",parts);

Output:

C:\Users\Pallavi\Desktop\node_func\app.js
This the all the parts present in file : 
  [ 'C:', 'Users', 'Pallavi', 'Desktop', 
  'node_func', 'app.js' ]

Reference: https://nodejs.org/api/globals.html#globals_filename