Typescript | Simple way to create decorators with TypeScript

typescript-create-decorators.md

Don´t forget to set up experimentalDecorators as a true value into the compileOptions attribute in the tsconfig.json file.

Call this decorator before method as @decoratorName()

export function decoratorName(paramName : boolean = false) {

    return function(target: any, propertyKey: string, descriptor: PropertyDescriptor) {

        const originalMethod = descriptor.value;
        
        descriptor.value = function(...args: any[]) {
             // do something here
            const return_values = originalMethod.apply(this, args), milissegundos);
            // do something here
            return return_values
        }

        return descriptor;
    }
}

https://cursos.alura.com.br/course/typescript-parte2/task/27343