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interface.js

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import { readdir, writeFile, readFile } from 'fs/promises'

import fs from 'fs'

import { basename, resolve } from 'path'

// Directory to scan for JSON files

const dirPath = resolve('src/i18n/en')

// Output file path

const outputFilePath = resolve('src/types/i18next.d.ts')

// Default namespace

const defaultNamespace = 'common'

async function generateKeys(source) {

const ret = []

for await (const key of Object.keys(source)) {

typeof source[key] === 'string'

? ret.push(`"${key}":string;`)

: ret.push(`"${key}":{\n${await generateKeys(source[key])}\n};`)

}

return ret.join('\n')

}

;(async () => {

try {

console.log(

'██╗ ██╗ █████╗ ███╗ ██╗\n██║███║██╔══██╗████╗ ██║\n██║╚██║╚█████╔╝██╔██╗ ██║\n██║ ██║██╔══██╗██║╚██╗██║\n██║ ██║╚█████╔╝██║ ╚████║\n╚═╝ ╚═╝ ╚════╝ ╚═╝ ╚═══╝',

)

// Read all files in the directory

const files = await readdir(dirPath)

// Filter for .json files

const jsonFiles = files.filter(file => file.endsWith('.json'))

if (jsonFiles.length === 0) {

console.error('No JSON files found in the directory.')

return

}

// Generate imports and resources object entries

let types = ''

let resources = ''

for await (const file of jsonFiles) {

const sanitizedName = basename(file, '.json').replace(/\./g, '')

const json = await readFile(resolve(dirPath, file), 'utf-8')

resources += `'${basename(file, '.json')}': ${sanitizedName}, `

const nsKeys = await generateKeys(JSON.parse(json))

types += `export interface ${sanitizedName}{\n${nsKeys}\n};\n`

}

// Generate the TypeScript declaration file content

const content = `

// This file is autogenerated

import 'i18next';

declare module 'i18next' {

${types}

interface CustomTypeOptions {

defaultNS: '${defaultNamespace}';

resources: { ${resources} }

};

}

`.trim()

// Write the generated content to the file

await writeFile(outputFilePath, content, 'utf-8')

console.log(`Generated TypeScript declaration file for i18n dictionaries at ${outputFilePath} `)

} catch (error) {

console.error('Error generating TypeScript declaration file:', error)

}

})()