ext.ts

language extensions for typescript

IterableIterator

1. skip
``ts
const v = ['a', 'b', 'c'];
const v1 = v.values().skip(2).toArray();
console.log(v1.length); // 1
console.log(v1[0]); // 'c'
`
2. skipWhile
`ts
const v = ['a', 'b', 'c'];
const v1 = v.values().skipWhile((s) => s === 'b').toArray();
console.log(v1.length); // 1
console.log(v1[0]); // 'c'
`

Array

1. sequenceEqual
`ts
import '@tszone/ext';

const a = [1, 2, 4];
const b = [1, 2, 5];
console.log(a.sequenceEqual(b)) // false
`

Promise


1. yield
`ts
import '@tszone/ext';

async function abc(): Promise {
// some work.
await Promise.yield();
// do your work.
await Promise.yield(20); // wait for 20ms.
// do your other work.
}
`


Math

1. randint

`ts
const a = Math.randint(3);
console.log(a); // [0, 3);
const b = Math.randint(3, 6);
console.log(b); // [3, 6);
``