Function transpileFileAndDeps

lib/utils/typescript.js:183–393

(filePath)

  // Recursive function to transpile a file and all its TypeScript dependencies
  const transpileFileAndDeps = (filePath) => {
    // Already transpiled, skip
    if (transpiledFiles.has(filePath)) {
      return
    }

    // Transpile this file
    let jsContent = transpileTS(filePath)

    // Find all TypeScript imports in this file (both ESM imports and require() calls)
    const importRegex = /from\s+['"]([^'"]+?)['"]/g
    const requireRegex = /require\s*\(\s*['"]([^'"]+?)['"]\s*\)/g
    let match
    const imports = []

    while ((match = importRegex.exec(jsContent)) !== null) {
      imports.push({ path: match[1], type: 'import' })
    }

    while ((match = requireRegex.exec(jsContent)) !== null) {
      imports.push({ path: match[1], type: 'require' })
    }

    // Get the base directory for this file
    const fileBaseDir = path.dirname(filePath)

    // Recursively transpile each imported TypeScript file
    for (const { path: importPath } of imports) {
      let importedPath = importPath

      // Check if this is a path alias
      const resolvedAlias = resolveTsPathAlias(importPath, tsConfig, configDir)
      if (resolvedAlias) {
        importedPath = resolvedAlias
      } else if (importPath.startsWith('.')) {
        importedPath = path.resolve(fileBaseDir, importPath)
      } else {
        continue
      }

      // Handle .js extensions that might actually be .ts files
      if (importedPath.endsWith('.js')) {
        const tsVersion = importedPath.replace(/\.js$/, '.ts')
        if (fs.existsSync(tsVersion)) {
          importedPath = tsVersion
        }
      }

      // Check for standard module extensions to determine if we should try adding .ts
      const ext = path.extname(importedPath)
      const standardExtensions = ['.js', '.mjs', '.cjs', '.json', '.node']
      const hasStandardExtension = standardExtensions.includes(ext.toLowerCase())

      // If it doesn't end with .ts and doesn't have a standard extension, try adding .ts
      if (!importedPath.endsWith('.ts') && !hasStandardExtension) {
        const tsPath = importedPath + '.ts'
        if (fs.existsSync(tsPath)) {
          importedPath = tsPath