When you encounter the error message “build failed due to a user error: build script returned non-zero exit code: 2,” it means that there was an issue with the build process of your script or code, resulting in a non-zero exit code of 2. This error is commonly seen in command-line or terminal-based programming environments.
A non-zero exit code indicates that the build process encountered an error or an exceptional condition during execution. In this case, since it is a user error, it implies that the issue lies with the code that you wrote or the way you set up the build process.
To resolve this error, you need to identify and fix the problem that caused the non-zero exit code. This typically involves reviewing your code, checking for syntax errors, logical errors, missing dependencies, or incorrect build configurations.
Let’s consider an example to illustrate this error. Suppose you are building a web application using a build script written in JavaScript. During the build process, the script performs tasks like bundling JavaScript files, compiling CSS, and optimizing assets. However, if there is an error in one of the JavaScript files, the build script may fail and return a non-zero exit code of 2.
Here is a simplified example of a build script that encounters an error:
const fs = require('fs');
const path = require('path');
// Read the input file
const inputFile = path.join(__dirname, 'src', 'index.js');
const fileContent = fs.readFileSync(inputFile, 'utf-8');
// Perform some operations with the file content
const processedContent = fileContent.map((line) => {
return line.toUpperCase();
});
// Save the processed content to an output file
const outputFile = path.join(__dirname, 'dist', 'bundle.js');
fs.writeFileSync(outputFile, processedContent, 'utf-8');
In this example, the error occurs when trying to call the `map` method on `fileContent`, which is a string and not an array. This mistake will cause the build script to fail with a non-zero exit code of 2.
To fix this error, you would need to correct the code so that it properly converts the file content into an array before applying the `map` method:
const processedContent = fileContent.split('\n').map((line) => {
return line.toUpperCase();
});
By fixing the code and ensuring there are no other errors, the build script should run successfully without encountering the non-zero exit code 2 error.
It’s important to carefully review your code, check for any error messages or logs provided by the build process, and follow best practices to avoid user errors that lead to build failures.