@connected/client/dist/middleware.js

The hassle free way to call your server-side code

export default class Middleware {
    handlers = [];
    use(handler) {
        this.handlers.push({ handler, type: 'Normal' });
    }
    useErrorHandler(handler) {
        this.handlers.push({ handler, type: 'Error' });
    }
    go(done, ...args) {
        this.processHandlers(this.handlers, done, args, undefined);
    }
    processHandlers(handlers, done, args, error) {
        const [handler, ...tail] = handlers;
        if (!handler) {
            done(error);
            return;
        }
        const next = (error) => this.processHandlers(tail, done, args, error);
        try {
            const skipHandler = !!error !== (handler.type === 'Error');
            if (skipHandler) {
                next(error);
            }
            else if (error) {
                handler.handler(error, next, ...args);
            }
            else {
                handler.handler(next, ...args);
            }
        }
        catch (error) {
            next(error);
        }
    }
}
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