142 lines
3.9 KiB
TypeScript
142 lines
3.9 KiB
TypeScript
type CollectionByKey<Member> = Record<number | string, Member>;
|
|
|
|
type OrderDirection =
|
|
'asc'
|
|
| 'desc';
|
|
|
|
interface OrderCallback<T> {
|
|
(member: T): any;
|
|
}
|
|
|
|
export function buildCollectionByKey<T extends AnyLiteral>(collection: T[], key: keyof T) {
|
|
return collection.reduce((byKey: CollectionByKey<T>, member: T) => {
|
|
byKey[member[key]] = member;
|
|
|
|
return byKey;
|
|
}, {});
|
|
}
|
|
|
|
export function mapValues<R extends any, M extends any>(
|
|
byKey: CollectionByKey<M>,
|
|
callback: (member: M, key: string, index: number, originalByKey: CollectionByKey<M>) => R,
|
|
): CollectionByKey<R> {
|
|
return Object.keys(byKey).reduce((newByKey: CollectionByKey<R>, key, index) => {
|
|
newByKey[key] = callback(byKey[key], key, index, byKey);
|
|
return newByKey;
|
|
}, {});
|
|
}
|
|
|
|
export function pick<T, K extends keyof T>(object: T, keys: K[]) {
|
|
return keys.reduce((result, key) => {
|
|
result[key] = object[key];
|
|
return result;
|
|
}, {} as Pick<T, K>);
|
|
}
|
|
|
|
export function pickTruthy<T, K extends keyof T>(object: T, keys: K[]) {
|
|
return keys.reduce((result, key) => {
|
|
if (object[key]) {
|
|
result[key] = object[key];
|
|
}
|
|
|
|
return result;
|
|
}, {} as Pick<T, K>);
|
|
}
|
|
|
|
export function omit<T, K extends keyof T>(object: T, keys: K[]) {
|
|
const stringKeys = new Set(keys.map(String));
|
|
const savedKeys = Object.keys(object)
|
|
.filter((key) => !stringKeys.has(key)) as Array<Exclude<keyof T, K>>;
|
|
|
|
return pick(object, savedKeys);
|
|
}
|
|
|
|
export function orderBy<T>(
|
|
collection: T[],
|
|
orderRule: (keyof T) | OrderCallback<T> | ((keyof T) | OrderCallback<T>)[],
|
|
mode: OrderDirection | [OrderDirection, OrderDirection] = 'asc',
|
|
): T[] {
|
|
function compareValues(a: T, b: T, currentOrderRule: (keyof T) | OrderCallback<T>, isAsc: boolean) {
|
|
const aValue = (typeof currentOrderRule === 'function' ? currentOrderRule(a) : a[currentOrderRule]) || 0;
|
|
const bValue = (typeof currentOrderRule === 'function' ? currentOrderRule(b) : b[currentOrderRule]) || 0;
|
|
|
|
return isAsc ? aValue - bValue : bValue - aValue;
|
|
}
|
|
|
|
if (Array.isArray(orderRule)) {
|
|
const [mode1, mode2] = Array.isArray(mode) ? mode : [mode, mode];
|
|
const [orderRule1, orderRule2] = orderRule;
|
|
const isAsc1 = mode1 === 'asc';
|
|
const isAsc2 = mode2 === 'asc';
|
|
|
|
return collection.sort((a, b) => {
|
|
return compareValues(a, b, orderRule1, isAsc1) || compareValues(a, b, orderRule2, isAsc2);
|
|
});
|
|
}
|
|
|
|
const isAsc = mode === 'asc';
|
|
return collection.sort((a, b) => {
|
|
return compareValues(a, b, orderRule, isAsc);
|
|
});
|
|
}
|
|
|
|
export function unique<T extends any>(array: T[]): T[] {
|
|
return Array.from(new Set(array));
|
|
}
|
|
|
|
export function compact<T extends any>(array: T[]) {
|
|
return array.filter(Boolean);
|
|
}
|
|
|
|
export function areSortedArraysEqual(array1: any[], array2: any[]) {
|
|
if (array1.length !== array2.length) {
|
|
return false;
|
|
}
|
|
|
|
return array1.every((item, i) => item === array2[i]);
|
|
}
|
|
|
|
export function areSortedArraysIntersecting(array1: any[], array2: any[]) {
|
|
return array1[0] <= array2[array2.length - 1] && array1[array1.length - 1] >= array2[0];
|
|
}
|
|
|
|
export function findIntersectionWithSet<T>(array: T[], set: Set<T>): T[] {
|
|
return array.filter((a) => set.has(a));
|
|
}
|
|
|
|
export function split<T extends any>(array: T[], chunkSize: number) {
|
|
const result: T[][] = [];
|
|
for (let i = 0; i < array.length; i += chunkSize) {
|
|
result.push(array.slice(i, i + chunkSize));
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
export function cloneDeep<T>(value: T): T {
|
|
if (typeof value !== 'object') {
|
|
return value;
|
|
}
|
|
|
|
if (Array.isArray(value)) {
|
|
return value.map(cloneDeep) as typeof value;
|
|
}
|
|
|
|
return Object.keys(value).reduce((acc, key) => {
|
|
acc[key as keyof T] = cloneDeep(value[key as keyof T]);
|
|
return acc;
|
|
}, {} as T);
|
|
}
|
|
|
|
export function findLast<T>(array: Array<T>, predicate: (value: T, index: number, obj: T[]) => boolean): T | undefined {
|
|
let cursor = array.length;
|
|
|
|
while (cursor--) {
|
|
if (predicate(array[cursor], cursor, array)) {
|
|
return array[cursor];
|
|
}
|
|
}
|
|
|
|
return undefined;
|
|
}
|