@metamask/snaps-sdk/dist/internals/error-wrappers.mjs

A library containing the core functionality for building MetaMask Snaps

import { SnapError } from "../errors.mjs";
/**
 * Create a `SnapError` class from an error function from
 * `@metamask/rpc-errors`. This is useful for creating custom error classes
 * which can be thrown by a Snap.
 *
 * The created class will inherit the message, code, and data properties from
 * the error function.
 *
 * @param fn - The error function to create the class from.
 * @returns The created `SnapError` class.
 */
export function createSnapError(fn) {
    return class SnapJsonRpcError extends SnapError {
        /**
         * Create a new `SnapJsonRpcError` from a message and data.
         *
         * @param message - The message to create the error from.
         * @param data - The data to create the error from.
         */
        constructor(message, data) {
            if (typeof message === 'object') {
                const error = fn();
                super({
                    code: error.code,
                    message: error.message,
                    data: message,
                });
                return;
            }
            const error = fn(message);
            super({
                code: error.code,
                message: error.message,
                data,
            });
        }
    };
}
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