Making JavaScript typeof() work - typescript demo

type-of-demo.ts

import typeOf from './type-of';

const shallowCompare: (source: Record<string, unknown | unknown[]>, target: Record<string, unknown | unknown[]>): boolean => {
    if (typeOf(source) !== typeOf(target)) {
      return false;
    }

    return Object.keys(source).every((key) => {
      if (typeOf(source[key]) !== typeOf(target[key])) {
        return false;
      }

      if (Array.isArray(source[key])) {
        return (source[key] as unknown[]).length === (target[key] as unknown[]).length;
      }

      return source[key] === target[key];
    });
  },
};

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