fix: onChange 参数可以为 `undefined`

[nia3y]

This is

• [x] bug fix
• [x] TypeScript definition update

Background and solution

select 的 onChange 参数定义的类型不能为 undefined，但是当显示 clear icon，并点击清空选项时，会调用 onChange 事件，通过 console.log 打印出来的 value 和 option 为 undefined

function CustomSelect({ children, ...rest }: SelectProps) {
  return (
    <>
      <Select
        {...rest}
        onChange={(value, option) => {
          // 提示类型都不能为 undefined，
          // 但是当点击 clear icon 时，打印出的 value 和 option 为 undefined
          console.log(value, option);
          rest.onChange?.(value, option);
        }}
      >
        {children}
      </Select>
      <button
        onClick={() => {
          rest.onChange?.(undefined, []); // 类型错误，提示 value 不能为 undefined
          rest.onChange?.("male", undefined); // 类型错误 option 不能为 undefined
        }}
      >
        扩展按钮
      </button>
    </>
  );
}

demo

https://codesandbox.io/s/gallant-worker-ik998?file=/src/App.tsx

[vercel[bot]]

This pull request is being automatically deployed with Vercel (learn more).
To see the status of your deployment, click below or on the icon next to each commit.

🔍 Inspect: https://vercel.com/react-component/select/4tJtnLdztUEWRR8SX2HzFQd5aBZt
✅ Preview: https://select-git-fork-nia3y-patch-1-react-component.vercel.app

[codecov[bot]]

Codecov Report

Merging #666 (eef08ee) into master (95aa5b9) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #666   +/-   ##
=======================================
  Coverage   99.11%   99.11%           
=======================================
  Files          20       20           
  Lines        1013     1013           
  Branches      345      346    +1     
=======================================
  Hits         1004     1004           
  Misses          8        8           
  Partials        1        1           

Impacted Files	Coverage Δ
src/generate.tsx	99.39% <ø> (ø)
src/interface/generator.ts	100.00% <ø> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update 95aa5b9...eef08ee. Read the comment docs.