Module not found: error: request argument is not a string

A “module not found” error occurs when a requested module cannot be found or does not exist. The error message typically states that the “request argument is not a string.” This means that the code is trying to load a module using a variable or an expression that is not a string.

To understand this error better, let’s look at an example:

// Incorrect usage: request argument is not a string
const moduleName = someFunction(); // Assume someFunction() returns a value
import(moduleName) // Error: request argument is not a string

In the above example, the code is trying to dynamically import a module using the value returned by the function someFunction(). However, the import() function expects the request argument to be a string representing the module path, not a variable.

To fix this error, we need to ensure that the request argument passed to the import() function is always a string. We can achieve this by explicitly converting the variable or expression to a string:

// Corrected usage: converting variable to string
const moduleName = someFunction(); // Assume someFunction() returns a value
import(String(moduleName)) // Correct: request argument is a string

In the corrected code, we use the String() function to convert the result of someFunction() to a string before passing it as the request argument to the import() function. This ensures that the request argument is always a string, preventing the “module not found” error.