The error “cannot read properties of undefined (reading ‘pipe’)” occurs when you are trying to access a property or method of an undefined or null object in JavaScript. In this case, it is specifically related to the ‘pipe’ property.
To better understand this error, let’s consider an example. Assume we have the following code:
const data = undefined;
const result = data.pipe();
In this example, we define a variable called ‘data’ and set it to undefined. Then, we try to access the ‘pipe’ property of ‘data’. However, because ‘data’ is undefined, trying to access its properties will result in an error.
To fix this error, you need to ensure that the object you are trying to access properties or methods from is defined and not null. You can use conditional statements or appropriate checks to handle undefined or null values before accessing their properties.
Here’s an updated example that checks if ‘data’ is defined before calling the ‘pipe’ method:
const data = undefined;
if(data !== undefined) {
const result = data.pipe();
// Additional code using 'result' goes here
} else {
// Handle the case when 'data' is undefined
}
By checking if ‘data’ is defined before calling ‘pipe’, you can prevent the error from occurring.