1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
|
import * as _ from 'lodash';
export function mapFromObject<T>(obj: {[key: string]: T}): Map<string, T> {
return new Map(_.toPairs(obj));
}
export function mapValues<K, V1, V2>(f: (v: V1) => V2, map: Map<K, V1>): Map<K, V2> {
let ret: Map<K, V2> = new Map();
for (let [k, v] of map)
ret.set(k, f(v));
return ret;
}
export async function mapValuesAsync<K, V1, V2>(f: (v: V1) => Promise<V2>, map: Map<K, V1>): Promise<Map<K, V2>> {
let ret: Map<K, V2> = new Map();
for (let [k, v] of mapValues(f, map))
ret.set(k, await v);
return ret;
}
export function nextPowerOf2(n: number): number {
let i = 1;
while (i < n)
i *= 2;
return i;
}
|
