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407/**
* This script compares i18n keys between current branch (flat JSON) and main branch (nested TS).
*
* It checks:
* 1. All namespaces from main branch have corresponding JSON files
* 2. No TS files exist in current branch (all should be converted to JSON)
* 3. All keys from main branch exist in current branch
* 4. Values for existing keys haven't changed
* 5. Lists newly added keys and values
*
* Usage: npx tsx scripts/analyze-i18n-diff.ts
*/
import { execSync } from 'node:child_process'
import * as fs from 'node:fs'
import * as path from 'node:path'
import { fileURLToPath } from 'node:url'
const __filename = fileURLToPath(import.meta.url)
const __dirname = path.dirname(__filename)
const I18N_DIR = path.join(__dirname, '../i18n/en-US')
const LOCALE = 'en-US'
type TranslationValue = string | string[]
type FlatTranslation = {
[key: string]: TranslationValue
}
type NestedTranslation = {
[key: string]: string | string[] | NestedTranslation
}
type AnalysisResult = {
file: string
missingKeys: string[]
changedValues: { key: string, oldValue: TranslationValue, newValue: TranslationValue }[]
newKeys: { key: string, value: TranslationValue }[]
}
/**
* Flatten nested object to dot-separated keys
* Arrays are preserved as-is (not split into .0, .1, etc.)
*/
function flattenObject(obj: NestedTranslation, prefix = ''): FlatTranslation {
const result: FlatTranslation = {}
for (const [key, value] of Object.entries(obj)) {
const newKey = prefix ? `${prefix}.${key}` : key
if (typeof value === 'string') {
result[newKey] = value
}
else if (Array.isArray(value)) {
// Preserve arrays as-is
result[newKey] = value as string[]
}
else if (typeof value === 'object' && value !== null) {
Object.assign(result, flattenObject(value as NestedTranslation, newKey))
}
}
return result
}
/**
* Compare two translation values (string or array)
*/
function valuesEqual(a: TranslationValue, b: TranslationValue): boolean {
if (typeof a === 'string' && typeof b === 'string') {
return a === b
}
if (Array.isArray(a) && Array.isArray(b)) {
if (a.length !== b.length)
return false
return a.every((item, index) => item === b[index])
}
return false
}
/**
* Format value for display
*/
function formatValue(value: TranslationValue): string {
if (Array.isArray(value)) {
return `[${value.map(v => `"${v}"`).join(', ')}]`
}
return `"${value}"`
}
/**
* Parse TS file content to extract the translation object
*/
function parseTsContent(content: string): NestedTranslation {
// Remove 'const translation = ' and 'export default translation'
let cleaned = content
.replace(/const\s+translation\s*=\s*/, '')
.replace(/export\s+default\s+translation\s*(?:;\s*)?$/, '')
.trim()
// Remove trailing semicolon if present
if (cleaned.endsWith(';'))
cleaned = cleaned.slice(0, -1)
// Use Function constructor to safely evaluate the object literal
// This handles JS object syntax like unquoted keys, template literals, etc.
try {
// eslint-disable-next-line no-new-func
const fn = new Function(`return (${cleaned})`)
return fn() as NestedTranslation
}
catch (e) {
console.error('Failed to parse TS content:', e)
console.error('Content preview:', cleaned.slice(0, 200))
return {}
}
}
/**
* Get file content from main branch
*/
function getMainBranchFile(filePath: string): string | null {
try {
const relativePath = `./i18n/${LOCALE}/${filePath}`
return execSync(`git show main:${relativePath}`, {
encoding: 'utf-8',
stdio: ['pipe', 'pipe', 'pipe'],
})
}
catch {
return null
}
}
/**
* Get list of translation files
*/
function getTranslationFiles(): string[] {
const files = fs.readdirSync(I18N_DIR)
return files.filter(f => f.endsWith('.json')).map(f => f.replace('.json', ''))
}
/**
* Get list of namespaces from main branch (ts files)
*/
function getMainBranchNamespaces(): string[] {
try {
const relativePath = `./i18n/${LOCALE}`
const output = execSync(`git ls-tree --name-only main ${relativePath}/`, {
encoding: 'utf-8',
stdio: ['pipe', 'pipe', 'pipe'],
})
return output
.trim()
.split('\n')
.filter(f => f.endsWith('.ts'))
.map(f => path.basename(f, '.ts'))
}
catch {
return []
}
}
type NamespaceCheckResult = {
mainNamespaces: string[]
currentJsonFiles: string[]
currentTsFiles: string[]
missingJsonFiles: string[]
unexpectedTsFiles: string[]
}
/**
* Check namespace file consistency between main and current branch
*/
function checkNamespaceFiles(): NamespaceCheckResult {
const mainNamespaces = getMainBranchNamespaces()
const currentFiles = fs.readdirSync(I18N_DIR)
const currentJsonFiles = currentFiles
.filter(f => f.endsWith('.json'))
.map(f => f.replace('.json', ''))
const currentTsFiles = currentFiles
.filter(f => f.endsWith('.ts'))
.map(f => f.replace('.ts', ''))
// Check which namespaces from main are missing json files
const missingJsonFiles = mainNamespaces.filter(ns => !currentJsonFiles.includes(ns))
// ts files should not exist in current branch
const unexpectedTsFiles = currentTsFiles
return {
mainNamespaces,
currentJsonFiles,
currentTsFiles,
missingJsonFiles,
unexpectedTsFiles,
}
}
/**
* Analyze a single translation file
*/
function analyzeFile(baseName: string): AnalysisResult {
const result: AnalysisResult = {
file: baseName,
missingKeys: [],
changedValues: [],
newKeys: [],
}
// Read current branch JSON file
const jsonPath = path.join(I18N_DIR, `${baseName}.json`)
const currentContent = JSON.parse(fs.readFileSync(jsonPath, 'utf-8')) as Record<string, TranslationValue>
// Read main branch TS file
const tsContent = getMainBranchFile(`${baseName}.ts`)
if (!tsContent) {
// New file, all keys are new
for (const [key, value] of Object.entries(currentContent)) {
result.newKeys.push({ key, value })
}
return result
}
// Parse and flatten the TS content
const nestedObj = parseTsContent(tsContent)
const mainFlat = flattenObject(nestedObj)
// Check for missing keys (in main but not in current)
for (const key of Object.keys(mainFlat)) {
if (!(key in currentContent)) {
result.missingKeys.push(key)
}
}
// Check for changed values
for (const [key, oldValue] of Object.entries(mainFlat)) {
if (key in currentContent && !valuesEqual(currentContent[key], oldValue)) {
result.changedValues.push({
key,
oldValue,
newValue: currentContent[key],
})
}
}
// Find new keys (in current but not in main)
for (const [key, value] of Object.entries(currentContent)) {
if (!(key in mainFlat)) {
result.newKeys.push({ key, value })
}
}
return result
}
/**
* Main analysis function
*/
function main() {
console.log('🔍 Analyzing i18n differences between current branch (flat JSON) and main branch (nested TS)...\n')
// Check namespace file consistency first
console.log('📂 Checking namespace files...')
console.log('='.repeat(60))
const nsCheck = checkNamespaceFiles()
console.log(`Namespaces in main branch (ts files): ${nsCheck.mainNamespaces.length}`)
console.log(`JSON files in current branch: ${nsCheck.currentJsonFiles.length}`)
console.log(`TS files in current branch: ${nsCheck.currentTsFiles.length}`)
let hasNamespaceError = false
if (nsCheck.missingJsonFiles.length > 0) {
console.log('\n❌ Missing JSON files (namespace exists in main but no corresponding JSON):')
for (const ns of nsCheck.missingJsonFiles) {
console.log(` - ${ns}.json (was ${ns}.ts in main)`)
}
hasNamespaceError = true
}
else {
console.log('\n✅ All namespaces from main branch have corresponding JSON files')
}
if (nsCheck.unexpectedTsFiles.length > 0) {
console.log('\n❌ Unexpected TS files (should be deleted):')
for (const ns of nsCheck.unexpectedTsFiles) {
console.log(` - ${ns}.ts`)
}
hasNamespaceError = true
}
else {
console.log('✅ No TS files in current branch (all converted to JSON)')
}
console.log()
const files = getTranslationFiles()
const allResults: AnalysisResult[] = []
let totalMissing = 0
let totalChanged = 0
let totalNew = 0
for (const file of files) {
const result = analyzeFile(file)
allResults.push(result)
totalMissing += result.missingKeys.length
totalChanged += result.changedValues.length
totalNew += result.newKeys.length
}
// Summary
console.log('📊 Key Analysis Summary')
console.log('='.repeat(60))
console.log(`Total files analyzed: ${files.length}`)
console.log(`Missing keys (in main but not in current): ${totalMissing}`)
console.log(`Changed values: ${totalChanged}`)
console.log(`New keys: ${totalNew}`)
console.log()
// Detailed report
if (totalMissing > 0) {
console.log('\n❌ MISSING KEYS (exist in main but not in current branch)')
console.log('='.repeat(60))
for (const result of allResults) {
if (result.missingKeys.length > 0) {
console.log(`\n📁 ${result.file}:`)
for (const key of result.missingKeys) {
console.log(` - ${key}`)
}
}
}
}
if (totalChanged > 0) {
console.log('\n⚠️ CHANGED VALUES (same key, different value)')
console.log('='.repeat(60))
for (const result of allResults) {
if (result.changedValues.length > 0) {
console.log(`\n📁 ${result.file}:`)
for (const { key, oldValue, newValue } of result.changedValues) {
console.log(` Key: ${key}`)
console.log(` Old: ${formatValue(oldValue)}`)
console.log(` New: ${formatValue(newValue)}`)
console.log()
}
}
}
}
if (totalNew > 0) {
console.log('\n✨ NEW KEYS (exist in current branch but not in main)')
console.log('='.repeat(60))
for (const result of allResults) {
if (result.newKeys.length > 0) {
console.log(`\n📁 ${result.file}:`)
for (const { key, value } of result.newKeys) {
console.log(` + ${key}: ${formatValue(value)}`)
}
}
}
}
// Write detailed report to JSON file
const reportPath = path.join(__dirname, '../i18n-analysis-report.json')
fs.writeFileSync(reportPath, JSON.stringify({
summary: {
totalFiles: files.length,
missingKeys: totalMissing,
changedValues: totalChanged,
newKeys: totalNew,
},
namespaceCheck: {
mainNamespaces: nsCheck.mainNamespaces,
currentJsonFiles: nsCheck.currentJsonFiles,
missingJsonFiles: nsCheck.missingJsonFiles,
unexpectedTsFiles: nsCheck.unexpectedTsFiles,
},
details: allResults,
}, null, 2))
console.log(`\n📄 Detailed report written to: i18n-analysis-report.json`)
// Exit with error code if there are issues
if (hasNamespaceError) {
console.log('\n⚠️ Warning: Namespace file issues detected!')
process.exit(1)
}
if (totalMissing > 0) {
console.log('\n⚠️ Warning: Some keys are missing in the current branch!')
process.exit(1)
}
console.log('\n✅ All namespace files and keys from main branch exist in current branch.')
}
main()