fivem-ts

a library to speed up the development of Fivem scripts and frameworks

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fivem-ts - Documentation v0.7.5 • Docs

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fivem-ts - Documentation v0.7.5 / Shared / Middleware

Function: Middleware()

Middleware(preFn, postFn): (_target, propertyKey, descriptor) => void

A decorator that adds middleware functions before and after a method execution.

The @Middleware decorator allows you to specify functions to run before (preFn) and after (postFn) the execution of a method. This can be useful for adding common logic such as logging, validation, or transformation around method calls.

Parameters

• preFn: Function

The function to execute before the method. It receives the same arguments as the method.

• postFn: Function

The function to execute after the method. It receives the same arguments as the method.

Returns

Function

A function that can be used as a method decorator.

Parameters

• _target: unknown

• propertyKey: string

• descriptor: PropertyDescriptor

Returns

void

Example

function logStart(...args: any[]) {
  console.log('Method started with args:', args);
}

function logEnd(...args: any[]) {
  console.log('Method ended with args:', args);
}

class ExampleClass {
  @Middleware(logStart, logEnd)
  processData(data: string): string {
    return `Processed ${data}`;
  }
}

const example = new ExampleClass();
example.processData('test');
// Logs:
// Method started with args: ['test']
// Method ended with args: ['test']

Defined in

shared/decorators/core/Middleware.ts:37