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TypeScript - create generic function

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Created by:

Frida-Timms

667

In this article, we want to show how to create generic function type in TypeScript.

Quick solution:

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const print = <T extends unknown> (value: T): void => {
    // ...
};

or:

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function print<T extends unknown> (value: T): void {
    // ...
}

Practical examples

Edit

Example 1:

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const print = <T extends unknown> (value: T): void => {
    console.log(value);
};
​
​
// Usage example:
​
print(true);         // true
print(3.14);         // 3.14
print('Hi there!');  // Hi there!

Example 2:

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function print<T extends unknown>(value: T): void {
    console.log(value);
}
​
​
// Usage example:
​
print(true);         // true
print(3.14);         // 3.14
print('Hi there!');  // Hi there!