chore: add jest with esm and include a simple test

jest.config.ts

@@ -0,0 +1,28 @@
+import type { Config } from '@jest/types'
+
+// see https://jestjs.io/docs/ecmascript-modules
+
+// Sync object
+const config: Config.InitialOptions = {
+  verbose: true,
+  testMatch: [
+    '**/__tests__/**/*.+(ts|tsx|js)',
+    '**/?(*.)+(spec|test).+(ts|tsx|js)',
+  ],
+  moduleDirectories: [
+    'node_modules',
+    'src',
+  ],
+  moduleFileExtensions: ['ts', 'js'],
+  extensionsToTreatAsEsm: ['.ts'],
+  transform: {
+    '^.+\\.ts$': 'ts-jest',
+  },
+  globals: {
+    'ts-jest': {
+      useESM: true,
+    },
+  },
+}
+
+export default config

package.json

@@ -23,17 +23,23 @@
 	"bugs": "https://github.com/iconify/collections-json/issues",
 	"scripts": {
 		"build": "rimraf dist && tsup src/index.ts --format cjs,esm --dts",
-		"test": "esno src/test.ts"
+		"test": "cross-env NODE_OPTIONS=--experimental-vm-modules npx jest"
 	},
 	"dependencies": {
 		"upath": "^2.0.1"
 	},
 	"devDependencies": {
 		"@antfu/eslint-config": "^0.9.0",
+		"@types/jest": "^27.0.1",
 		"@types/node": "^16.9.1",
 		"@typescript-eslint/eslint-plugin": "^4.31.0",
+		"cross-env": "^7.0.3",
 		"eslint": "^7.32.0",
 		"esno": "^0.9.1",
+		"jest": "^27.2.0",
+		"jest-each": "^27.2.0",
+		"ts-jest": "^27.0.5",
+		"ts-node": "^10.2.1",
 		"tsup": "^4.14.0",
 		"typescript": "^4.4.3"
 	}

src/locate.test.ts

@@ -0,0 +1,12 @@
+import { resolve } from 'path'
+import { locate } from '../dist'
+
+const cwd = process.cwd()
+
+describe('locate', () => {
+  test('mdi resolves the json collection', () => {
+    const received = locate('mdi') as string
+    const expected = resolve(cwd, 'json/', 'mdi.json').replace(/\\/g, '/')
+    expect(received).toBe(expected)
+  })
+})

src/test.ts

@@ -1,12 +0,0 @@
-import { lookupCollection, locate, lookupCollections } from '.'
-
-const test = async(): Promise<void> => {
-  const fa = locate('fa')
-  console.log(fa)
-  const faLib = await lookupCollection('fa')
-  console.log(faLib)
-  const allCollections = await lookupCollections()
-  console.log(allCollections.fa)
-}
-
-test()

tsconfig.json

@@ -1,7 +1,8 @@
 {
   "compilerOptions": {
+    "baseUrl": ".",
     "module": "ESNext",
-    "target": "es2017",
+    "target": "ESNext",
     "lib": ["ESNext"],
     "esModuleInterop": true,
     "strict": true,