Function resolveTsPathAlias

lib/utils/typescript.js:30–57

* Resolve TypeScript path alias to actual file path * @param {string} importPath - Import path with alias (e.g., '#config/urls') * @param {object} tsConfig - Parsed tsconfig.json * @param {string} configDir - Directory containing tsconfig.json * @returns {string|null} - Resolved file path or nul

(importPath, tsConfig, configDir)

 * @returns {string|null} - Resolved file path or null if not an alias
 */
function resolveTsPathAlias(importPath, tsConfig, configDir) {
  if (!tsConfig || !tsConfig.compilerOptions || !tsConfig.compilerOptions.paths) {
    return null
  }

  const paths = tsConfig.compilerOptions.paths

  for (const [pattern, targets] of Object.entries(paths)) {
    if (!targets || targets.length === 0) {
      continue
    }

    const patternRegex = new RegExp(
      '^' + pattern.replace(/\*/g, '(.*)') + '$'
    )
    const match = importPath.match(patternRegex)

    if (match) {
      const wildcard = match[1] || ''
      const target = targets[0]
      const resolvedTarget = target.replace(/\*/g, wildcard)

      return path.resolve(configDir, resolvedTarget)
    }
  }

  return null
}

/**
 * Transpile TypeScript files to ES modules with CommonJS shim support