export.js

const path = require('path')
const fs = require('fs')
const { format } = require('prettier')

const folder = path.resolve(__dirname)
const outputFile = path.resolve(__dirname, 'index.ts')

function generateExport(name, findings) {
    let exportString = 'export {'

    findings.forEach((finding, index) => {
        if (index > 0) exportString += ','
        exportString += `\n	${finding.component}`
    })

    exportString += `\n} from './${name}'`

    return exportString
}

fs.readdir(folder, (err, files) => {
    if (err) return
    const exports = []

    files.forEach((file) => {
        const dirPath = `${folder}/${file}`
        if (!fs.statSync(dirPath).isDirectory()) return

        const filePath = `${dirPath}/index.tsx`
        if (!fs.existsSync(dirPath) || !fs.statSync(filePath).isFile()) return
        const content = fs.readFileSync(filePath, 'utf-8')

        const exportRegExp =
            /export[\s]+(type|const|default|function)[\s]+([a-zA-Z]+):?[\s]+/gm

        const match = [...content.matchAll(exportRegExp)]
        const findings = match.reduce((acc, match) => {
            const newFinding = {
                model: match[1],
                component: match[2],
            }

            acc.push(newFinding)

            return acc
        }, [])

        exports.push(generateExport(file, findings))
    })

    const formatedContent = format(exports.join('\n'))
    fs.writeFileSync(outputFile, formatedContent)
})