How do I remove an array item in TypeScript?

Question

I have an array that I\'ve created in TypeScript and it has a property that I use as a key. If I have that key, how can I remove an item from it?

Answer 1

Answer using TypeScript spread operator (...)

// Your key
const key = 'two';

// Your array
const arr = [
    'one',
    'two',
    'three'
];

// Get either the index or -1
const index = arr.indexOf(key); // returns 0


// Despite a real index, or -1, use spread operator and Array.prototype.slice()    
const newArray = (index > -1) ? [
    ...arr.slice(0, index),
    ...arr.slice(index + 1)
] : arr;