extract ModuleFormat type

Author: pacexy

lib/internal/modules/cjs/loader.js

@@ -1108,10 +1108,14 @@ function resolveForCJSWithHooks(specifier, parent, isMain) {
  * @typedef {import('internal/modules/customization_hooks').ModuleLoadResult} ModuleLoadResult;
  */
 
+/**
+ * @typedef {'module'|'commonjs'|'commonjs-typescript'|'module-typescript'|'typescript'} ModuleFormat;
+ */
+
 /**
  * Load the source code of a module based on format.
  * @param {string} filename Filename of the module.
- * @param {string|undefined|null} format Format of the module.
+ * @param {ModuleFormat|undefined|null} format Format of the module.
  * @returns {string|null}
  */
 function defaultLoadImpl(filename, format) {
@@ -1682,7 +1686,7 @@ function wrapSafe(filename, content, cjsModuleInstance, format) {
  * `exports`) to the file. Returns exception, if any.
  * @param {string} content The source code of the module
  * @param {string} filename The file path of the module
- * @param {'module'|'commonjs'|'commonjs-typescript'|'module-typescript'|'typescript'} format Intended format of the module.
+ * @param {ModuleFormat} format Intended format of the module.
  */
 Module.prototype._compile = function(content, filename, format) {
   if (format === 'commonjs-typescript' || format === 'module-typescript' || format === 'typescript') {