typescript type variable code example

Example 1: typescript integer

// There is no int type, use number
const myInt: number = 17;
const myDecimal: number = 17.5;

Example 2: how to declare variable in typescript

const variableSample: number = 0;
let variableSample: number = 0;

Example 3: use type as value typescript

Typescript interfaces aren''t being compiled into the js output, and you can not use them at runtime

Example 4: types function typescript

interface Alternate_Syntax_4_Advanced {
    title: string;
    callback<T extends unknown[], R = unknown>(...args?: T): R;
}