feat: convert the whole project into ESM

BREAKING CHANGE:
- by default, client project emit ESM and for clarity preset-essentials has been renamed to preset-esm
- ts-node is removed in favor of a more powerful and less buggy tsx

README.md

@@ -38,7 +38,7 @@
 
 [**FULL DOCUMENTATION IS AVAILABLE HERE**](https://github.com/alvis/presetter/blob/master/README.md)
 
-1. Bootstrap your project with `presetter-preset-essentials` & `presetter-preset-rollup`
+1. Bootstrap your project with `presetter-preset-esm` & `presetter-preset-rollup`
 
 ```shell
 npx presetter use presetter-preset presetter-preset-rollup
@@ -72,7 +72,7 @@ For NodeJS to import the correct export, remember to specify the following in yo
 
 ## Project Structure
 
-After installation, your project file structure should resemble the following or with more configuration files if you also installed other presets such as [`presetter-preset-essentials`](https://github.com/alvis/presetter/blob/master/packages/preset-essentials).
+After installation, your project file structure should resemble the following or with more configuration files if you also installed other presets such as [`presetter-preset-esm`](https://github.com/alvis/presetter/blob/master/packages/preset-essentials).
 
 Implement your business logic under `source` and prepare tests under `spec`.
 
@@ -108,7 +108,7 @@ interface PresetterRC {
   name: string | string[];
   /** additional configuration passed to the preset for generating the configuration files */
   config?: {
-    //  ┌─ configuration for other tools via other presets (e.g. presetter-preset-essentials)
+    //  ┌─ configuration for other tools via other presets (e.g. presetter-preset-esm)
     // ...
 
     /** additional configuration for rollup */

package.json

@@ -17,6 +17,7 @@
   },
   "main": "lib/index.js",
   "types": "lib/index.d.ts",
+  "type": "module",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/alvis/presetter.git"
@@ -48,7 +49,6 @@
   },
   "devDependencies": {
     "presetter": "file:../presetter",
-    "presetter-preset-strict": "file:../preset-strict",
     "type-fest": "^2.0.0"
   },
   "dependencies": {

source/index.ts

@@ -13,7 +13,8 @@
  * -------------------------------------------------------------------------
  */
 
-import { resolve } from 'node:path';
+import { dirname, resolve } from 'node:path';
+import { fileURLToPath } from 'node:url';
 
 import { loadFile, template } from 'presetter';
 
@@ -23,9 +24,11 @@ import type { PresetAsset } from 'presetter-types';
 
 import type { RollupConfig } from './rollup';
 
+const DIR = fileURLToPath(dirname(import.meta.url));
+
 // paths to the template directory
-const TEMPLATES = resolve(__dirname, '..', 'templates');
-const CONFIGS = resolve(__dirname, '..', 'configs');
+const TEMPLATES = resolve(DIR, '..', 'templates');
+const CONFIGS = resolve(DIR, '..', 'configs');
 
 /** config for this preset */
 export type PresetConfig = {

spec/index.spec.ts

@@ -13,21 +13,28 @@
  * -------------------------------------------------------------------------
  */
 
-import { readdirSync } from 'node:fs';
-import { resolve } from 'node:path';
-import { loadDynamicMap, resolveContext } from 'presetter';
+import { existsSync, readdirSync } from 'node:fs';
+import { dirname, resolve } from 'node:path';
+import * as pathNode from 'node:path';
+import { fileURLToPath } from 'node:url';
 
-import getPresetAsset from '#index';
+import { jest } from '@jest/globals';
 
-jest.mock('node:path', () => ({
-  __esModule: true,
-  ...jest.requireActual('node:path'),
-  resolve: jest.fn(jest.requireActual('node:path').resolve),
+const __dir = fileURLToPath(dirname(import.meta.url));
+
+jest.unstable_mockModule('node:path', () => ({
+  ...pathNode,
+  // spy on resolve to check if a template is referenced
+  resolve: jest.fn(resolve),
 }));
 
+const { resolve: resolveSpyed } = await import('node:path');
+const { loadDynamicMap, resolveContext } = await import('presetter');
+
+const { default: getPresetAsset } = await import('#index');
 describe('fn:getPresetAsset', () => {
   it('use all templates', async () => {
-    const asset = getPresetAsset();
+    const asset = await getPresetAsset();
     const context = await resolveContext({
       graph: [{ name: 'preset', asset, nodes: [] }],
       context: {
@@ -40,16 +47,16 @@ describe('fn:getPresetAsset', () => {
     await loadDynamicMap(asset.supplementaryConfig, context);
     await loadDynamicMap(asset.template, context);
 
-    const TEMPLATES = resolve(__dirname, '..', 'templates');
-    const allTemplates = readdirSync(TEMPLATES);
-    const CONFIGS = resolve(__dirname, '..', 'configs');
-    const supplementaryConfig = readdirSync(CONFIGS);
+    const CONFIGS = resolve(__dir, '..', 'configs');
+    const configs = (existsSync(CONFIGS) && readdirSync(CONFIGS)) || [];
+    const TEMPLATES = resolve(__dir, '..', 'templates');
+    const templates = (existsSync(TEMPLATES) && readdirSync(TEMPLATES)) || [];
 
-    for (const path of allTemplates) {
-      expect(resolve).toBeCalledWith(TEMPLATES, path);
+    for (const path of configs) {
+      expect(resolveSpyed).toBeCalledWith(CONFIGS, path);
     }
-    for (const path of supplementaryConfig) {
-      expect(resolve).toBeCalledWith(CONFIGS, path);
+    for (const path of templates) {
+      expect(resolveSpyed).toBeCalledWith(TEMPLATES, path);
     }
   });
 });