redux-tiles/src/helpers.ts

Library to create and easily compose redux pieces together in less verbose manner

import { isArray, isString } from "./utils";

export function ensureArray(value: string | string[]): string[] {
  return isString(value) ? [value as string] : (value as string[]);
}

export function populateHash(
  hash: any,
  path: string[] | string,
  value: any
): { [key: string]: any } {
  if (isString(path)) {
    return populateHash(hash, [path as string], value);
  }

  if (path.length === 1) {
    hash[path[0]] = value;
    return hash;
  }

  const property: string = path[0];
  if (!hash[property]) {
    hash[property] = {};
  }

  return populateHash(hash[property], path.slice(1), value);
}

export function iterate(tiles: any[] | { [key: string]: any }): any[] {
  return isArray(tiles)
    ? (tiles as any[])
    : Object.keys(tiles).reduce((arr: any[], key: string) => {
        const values: any = (tiles as { [key: string]: any })[key];
        return arr.concat(values);
      }, []);
}

function capitalize(str: string, i: number): string {
  if (i === 0) {
    return str;
  }

  return str[0].toUpperCase() + str.slice(1);
}

export function createType({
  type,
  path
}: {
  type: string | string[];
  path?: null | undefined | string[];
}): string {
  const list: string[] = ensureArray(type).concat(
    path == null ? [] : path.map(String)
  );
  return list.map(capitalize).join("");
}