This repository demonstrates a common JavaScript error involving the addition of a number and null. When adding a number and null, JavaScript performs type coercion, resulting in an unexpected NaN (Not a Number) result instead of the expected numerical sum. The issue is detailed in the bug.js file. A solution to avoid this is presented in the bugSolution.js file.
The bug lies in the foo function. While adding a number and null might seem straightforward, it leads to NaN if you aren't careful. In this specific instance, the expected output is 1, but instead it returns NaN.
The solution involves explicitly checking for null or using a method to handle the type coercion issue before performing the addition. The bugSolution.js file shows a correct implementation that addresses the bug using a conditional check for null values before adding the numbers.