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types function typescript

By Restu Wahyu SaputraRestu Wahyu Saputra on Jan 02, 2021
interface Safer_Easy_Fix {
    title: string;
    callback: () => void;
}
interface Alternate_Syntax_4_Safer_Easy_Fix {
    title: string;
    callback(): void;
}

Source: stackoverflow.com

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typescript function

By VasteMondeVasteMonde on Apr 24, 2021
// Parameter type annotation
function greet(name: string): string {
 return name.toUpperCase();
}

console.log(greet("hello"));		// HELLO
console.log(greet(1));				// error, name is typed (string)

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typescript function type

By Wide-eyed WolfWide-eyed Wolf on May 11, 2021
interface getUploadHandlerParams {
  checker : Function
}

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typescript function as parameter

By peachmangopiepeachmangopie on Dec 03, 2020
function createPerson(name: string, doAction: () => void): void {
  console.log(`Hi, my name is ${name}.`);
  doAction(); // doAction as a function parameter.
}

// Hi, my name is Bob.
// performs doAction which is waveHands function.
createPerson('Bob', waveHands()); 

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typescript function type

By peachmangopiepeachmangopie on Dec 03, 2020
// define your parameter's type inside the parenthesis
// define your return type after the parenthesis

function sayHello(name: string): string  {
  console.log(`Hello, ${name}`!);
}

sayHello('Bob'); // Hello, Bob!

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typescript function type

By Coder CuttlefishCoder Cuttlefish on Jul 16, 2020
interface Date {
  toString(): string;
  setTime(time: number): number;
  // ...
}

Source: mariusschulz.com

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