svelte-map-reduce-store/dic.js

```typescript import { MapReduce } from 'svelte-map-reduce-store';

import { inPlaceSort } from './fast-sort';
export function sort(value) {
  if (!(value instanceof Array)) {
    const list = [];
    for (const id in value) {
      const item = value[id];
      item._id = id;
      list.push(item);
    }
    value = list;
  }
  return inPlaceSort(value);
}
export function group_sort(data, cb, ...cbs) {
  if (!cbs.length) return cb(data);
  if (data instanceof Array) {
    for (const o of data) {
      group_sort(o, ...cbs);
    }
  } else {
    const list = [];
    for (const idx in data) {
      const item = group_sort(data[idx], ...cbs);
      item._id = idx;
      list.push(item);
    }
    data = list;
  }
  return cb(data);
}
export function dic(o, ...levels) {
  for (let i = 0; i < levels.length; i += 2) {
    const id = levels[i];
    const format = levels[i + 1];
    if (!o[id]) o[id] = format;
    o = o[id];
  }
  return o;
}
/*
type Head<T extends readonly unknown[] | string> = T extends string
  ? T extends `${infer F}${string}`
    ? F
    : T extends ''
    ? ''
    : string
  : T extends readonly [infer U, ...infer _]
  ? U
  : T[0] | undefined

type Tail<T extends string | readonly unknown[]> = T extends string
  ? T extends `${string}${infer R}`
    ? R
    : T extends ''
    ? ''
    : string
  : T extends readonly [unknown, ...infer R]
  ? R
  : T

type Head<T extends readonly unknown[]> = T extends readonly [infer U, ...infer _]
  ? U
  : T[0] | undefined

type Tail<T extends readonly unknown[]> = T extends readonly [unknown, ...infer R]
  ? R
  : T
*/