is-nan function
npm install @x-oasis/is-nan
``bash$ npm i @x-oasis/is-nan`
bash$ npm i @x-oasis/is-nan
`typescriptimport isNaN from '@x-oasis/is-nan'`
typescriptimport isNaN from '@x-oasis/is-nan'
`bash$ pnpm test``
bash$ pnpm test