fix: set moduleResolution to Node16 (#750)

* fix: set moduleResolution to Node16

* fix: use file urls

* chore: add types

src/module-loader.ts

@@ -15,12 +15,6 @@ const getPackageType = require('get-package-type')
 // eslint-disable-next-line camelcase
 const s_EXTENSIONS: string[] = ['.ts', '.js', '.mjs', '.cjs']
 
-/**
- * Provides a mechanism to use dynamic import / import() with tsconfig -> module: commonJS as otherwise import() gets
- * transpiled to require().
- */
-const _importDynamic = new Function('modulePath', 'return import(modulePath)') // eslint-disable-line no-new-func
-
 /**
  * Provides a static class with several utility methods to work with Oclif config / plugin to load ESM or CJS Node
  * modules and source files.
@@ -46,12 +40,12 @@ export default class ModuleLoader {
    * @returns {Promise<*>} The entire ESM module from dynamic import or CJS module by require.
    */
   static async load(config: IConfig|IPlugin, modulePath: string): Promise<any> {
-    let filePath
-    let isESM
+    let filePath: string | undefined
+    let isESM: boolean | undefined
     try {
       ({isESM, filePath} = ModuleLoader.resolvePath(config, modulePath))
-      // It is important to await on _importDynamic to catch the error code.
-      return isESM ? await _importDynamic(url.pathToFileURL(filePath)) : require(filePath)
+      // It is important to await on import to catch the error code.
+      return isESM ? await import(url.pathToFileURL(filePath).href) : require(filePath)
     } catch (error: any) {
       if (error.code === 'MODULE_NOT_FOUND' || error.code === 'ERR_MODULE_NOT_FOUND') {
         throw new ModuleLoadError(`${isESM ? 'import()' : 'require'} failed to load ${filePath || modulePath}`)
@@ -79,11 +73,11 @@ export default class ModuleLoader {
    *                                                                   file path and whether the module is ESM.
    */
   static async loadWithData(config: IConfig|IPlugin, modulePath: string): Promise<{isESM: boolean; module: any; filePath: string}> {
-    let filePath
-    let isESM
+    let filePath: string | undefined
+    let isESM: boolean | undefined
     try {
       ({isESM, filePath} = ModuleLoader.resolvePath(config, modulePath))
-      const module = isESM ? await _importDynamic(url.pathToFileURL(filePath)) : require(filePath)
+      const module = isESM ? await import(url.pathToFileURL(filePath).href) : require(filePath)
       return {isESM, module, filePath}
     } catch (error: any) {
       if (error.code === 'MODULE_NOT_FOUND' || error.code === 'ERR_MODULE_NOT_FOUND') {

tsconfig.json

@@ -13,6 +13,7 @@
     "target": "es2020",
     "allowSyntheticDefaultImports": true,
     "noErrorTruncation": true,
+    "moduleResolution": "Node16"
   },
   "include": [
     "./src/**/*"