Intlayer

import type { LocalesValues } from '@intlayer/types'; /** * Get the output file path by replacing the base locale with the target locale * * This function handles two types of replacements: * 1. Actual locale values (e.g., `/en/` → `/fr/`) * 2. Template placeholders (e.g., `{{baseLocale}}` → `{{locale}}`, `{{baseLocaleName}}` → `{{localeName}}`) * * Replacement patterns: * - `/baseLocale/` → `/locale/` * - `\baseLocale\` → `\locale\` * - `_baseLocale.` → `_locale.` * - `baseLocale_` → `locale_` * - `.baseLocaleName.` → `.localeName.` * - `{{baseLocale}}` → `{{locale}}` * - `{{baseLocaleName}}` → `{{localeName}}` * * If no patterns match, appends `.locale` to the file extension. * * @param filePath - The input file path * @param locale - The target locale * @param baseLocale - The base locale to replace * @returns The output file path with locale replacements */ export const getOutputFilePath = ( filePath: string, locale: LocalesValues, baseLocale: LocalesValues ): string => { if (!filePath || !locale || !baseLocale) { throw new Error('filePath, locale, and baseLocale are required'); } let outputFilePath = filePath; // Define replacement patterns with global flag to replace all occurrences const replacements = [ // Template placeholders (processed first) { pattern: /\{\{baseLocale\}\}/g, replacement: '{{locale}}', }, { pattern: /\{\{baseLocaleName\}\}/g, replacement: '{{localeName}}', }, // Path separators (most specific first) { // Unix path separators pattern: new RegExp(`/${baseLocale}/`, 'g'), replacement: `/${locale}/`, }, { // Windows path separators pattern: new RegExp(`\\\\${baseLocale}\\\\`, 'g'), replacement: `\\${locale}\\`, }, // File naming patterns { // file_en.md → file_fr.md pattern: new RegExp(`_${baseLocale}\\.`, 'g'), replacement: `_${locale}.`, }, { // /file_en.md → /file_fr.md pattern: new RegExp(`/${baseLocale}_`, 'g'), replacement: `/${locale}_`, }, { // Start of filename pattern en_guide.md → fr_guide.md (or after path separator) pattern: new RegExp(`(^|[\\/])${baseLocale}_`, 'g'), replacement: `$1${locale}_`, }, { // Dot delimited pattern guide.en.md → guide.fr.md pattern: new RegExp(`\\.${baseLocale}\\.`, 'g'), replacement: `.${locale}.`, }, ]; // Apply all replacements for (const { pattern, replacement } of replacements) { outputFilePath = outputFilePath.replace(pattern, replacement); } // If no changes were made, append locale as extension if (outputFilePath === filePath) { const lastDotIndex = filePath.lastIndexOf('.'); if (lastDotIndex > 0) { // Insert locale before the file extension return `${filePath.slice(0, lastDotIndex)}.${locale}${filePath.slice(lastDotIndex)}`; } else { // No extension found, just append return `${filePath}.${locale}`; } } return outputFilePath; };