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simple typescript decorator example

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KostasX answered on May 30, 2020 Popularity 10/10 Helpfulness 2/10

answer simple typescript decorator example

related typescript decorators

simple typescript decorator example

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-1

// Example of a Class Decorator in TypeScript:
function reportableClassDecorator<T extends { new (...args: any[]): {} }>(constructor: T) {
  return class extends constructor {
    reportingURL = "http://www...";
  };
}
 
@reportableClassDecorator
class BugReport {
  title: string;
  constructor(t: string) {
    this.title = t;
  }
}
 
const bug = new BugReport("Needs dark mode");
console.log(bug.title); // Prints "Needs dark mode"
console.log(bug.reportingURL); // Prints "http://www..."

Popularity 10/10 Helpfulness 2/10 Language typescript

Source: Grepper

Tags: typescript typescript-decorator

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Contributed on Feb 17 2022

KostasX

0 Answers Avg Quality 2/10

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tsfunction f() {
  console.log("f(): evaluated");
  return function(target, propertyKey: string, descriptor: PropertyDescriptor) {
    console.log("f(): called");
  };
}

function g() {
  console.log("g(): evaluated");
  return function(target, propertyKey: string, descriptor: PropertyDescriptor) {
    console.log("g(): called");
  };
}

class C {
  @f()
  @g()
  method() {}
}

Popularity 10/10 Helpfulness 3/10 Language typescript

Source: www.typescriptlang.org

Tags: typescript t

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Contributed on May 30 2020

DonsWayo

0 Answers Avg Quality 2/10

simple typescript decorator example

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