test: setup tests environment

esbuild/build.mjs

@@ -11,7 +11,7 @@ const common = {
     bundle: true,
     sourcemap: true,
     target: tsConfig.compilerOptions.target,
-    tsconfig: './tsconfig.json',
+    tsconfig: './tsconfig.publish.json',
 };
 
 build({

package.json

@@ -18,8 +18,8 @@
   "scripts": {
     "build": "run-p build:*",
     "build:js": "./esbuild/build.mjs",
-    "build:declarations": "tsc --emitDeclarationOnly --outDir ./build",
-    "test": "exit 0",
+    "build:declarations": "tsc -p tsconfig.publish.json --emitDeclarationOnly --outDir ./build",
+    "test": "cd tests && npm ci && npm test -- --ci",
     "lint": "lint update && lint",
     "lint:fix": "lint update && lint fix",
     "pre-commit": "lint update && lint-staged",

tests/jest.config.js

@@ -0,0 +1,9 @@
+/** @type {import('jest').Config} */
+module.exports = {
+    testEnvironment: 'jsdom',
+    transformIgnorePatterns: [],
+    snapshotSerializers: ['jest-serializer-html'],
+    transform: {
+        '^.+\\.(j|t)s?$': ['esbuild-jest', {tsconfig: './tsconfig.json'}],
+    },
+};