ky/distribution/errors/NonError.js

Tiny and elegant HTTP client based on the Fetch API

import { isError } from '../utils/is.js';
/**
Wrapper for non-Error values that were thrown.

In JavaScript, any value can be thrown (not just Error instances). This class wraps such values to ensure consistent error handling.
*/
export class NonError extends Error {
    /**
    Returns the value as-is when it is an `Error`, including one from another realm, and otherwise wraps it in a `NonError`.
    */
    static wrap(value) {
        return isError(value) ? value : new NonError(value);
    }
    name = 'NonError';
    value;
    constructor(value) {
        let message = 'Non-error value was thrown';
        // Intentionally minimal as this error is just an edge-case.
        try {
            if (typeof value === 'string') {
                message = value;
            }
            else if (value && typeof value === 'object' && 'message' in value && typeof value.message === 'string') {
                message = value.message;
            }
        }
        catch {
            // Use default message if accessing properties throws
        }
        super(message);
        this.value = value;
    }
}
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