elk/scripts/cleanup-translations.ts

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import { Buffer } from 'node:buffer'
import { flatten, unflatten } from 'flat'
import { createResolver } from '@nuxt/kit'
import fs from 'fs-extra'
import { currentLocales } from '../config/i18n'
const resolver = createResolver(import.meta.url)
const sourceLanguageLocale = currentLocales.find(l => l.code === 'en-US')!
function merge(src: Record<string, any>, dst: Record<string, any>) {
for (const key in src) {
if (typeof src[key] === 'object') {
if (!dst[key])
dst[key] = {}
merge(src[key], dst[key])
}
else {
dst[key] = src[key]
}
}
}
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const sourceFiles = sourceLanguageLocale.files ? sourceLanguageLocale.files : [sourceLanguageLocale.file!]
const sourceTranslations: Record<string, string> = {}
for (const file of sourceFiles) {
const data = JSON.parse(Buffer.from(
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await fs.readFile(resolver.resolve(`../locales/${file as string}`), 'utf-8'),
).toString()) as Record<string, unknown>
merge(flatten(data), sourceTranslations)
}
async function removeOutdatedTranslations() {
for (const locale of currentLocales.filter(l => l.code !== 'en-US')) {
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const files = locale.files ? locale.files as string[] : [locale.file as string]
for (const file of files) {
const path = resolver.resolve(`../locales/${file}`)
const data = JSON.parse(Buffer.from(
await fs.readFile(path, 'utf-8'),
).toString())
const targetTranslations: Record<string, string> = flatten(data)
for (const key in targetTranslations) {
if (!sourceTranslations[key])
delete targetTranslations[key]
}
const unflattened = unflatten(targetTranslations)
await fs.writeFile(
path,
`${JSON.stringify(unflattened, null, 2)}\n`,
{ encoding: 'utf-8' },
)
}
}
}
removeOutdatedTranslations()