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Building User Interfaces and Functions with TypeScript and React

Refactoring the Sorters Component

Learn how to refactor a React sorting component from a parent-child pattern into an internal state management pattern.

We'll cover the following...

The current Sorters component

Let’s take a look at the current Sorters component below:

TypeScript 3.3.4
import * as React from 'react';
export interface ISortersProps<T> {
  object: T;
  setSortProperty: (property: keyof T) => void;
}
export function Sorters<T> (props: ISortersProps<T>) {
  const { object, setSortProperty } = props;
  return (
    <>
      <label htmlFor="sorters">Sorters - try us too</label>
      <select
        id="sorters"
        onChange={(event) => setSortProperty(event.target.value as any)}
        >
        {Object.keys(object).map(key => {
          return (
            <option key={key} value={key}>
              Sort by '{key}'!
            </option>
          )
        })}
      </select>
    </>
  )
}

Refactoring steps

Now, let’s make the Sorters component responsible for its own state and sorting. A few steps are required to do this:

  • Remove the object prop, and replace it with a data
...