Adapted build scripts

package.json

@@ -79,14 +79,15 @@
   },
   "scripts": {
     "benchmark": "node benchmarks",
-    "build": "tsc && ncp spec/test_data dist",
+    "build": "npm run build:tests & npm run build:esm",
+    "build:esm": "rollup -c",
+    "build:tests": "tsc",
     "clean": "rimraf *~ #* *classifier.json dist io_spec/tmp/*.json coverage",
     "test_io": "jasmine --random=false io_spec/*_spec.js",
-    "test": "cross-env NODE_PATH=.:./dist jasmine --random=false dist/spec/*_spec.js",
+    "test": "cross-env NODE_PATH=. jasmine --random=false dist/cjs/spec/*_spec.js",
     "coverage": "nyc --no-clean npm run test && nyc --no-clean npm run test_io",
     "test_browser": "cross-env NODE_PATH=. node ./node_modules/gulp/bin/gulp.js",
-    "lint": "eslint . --ext .ts",
-    "build_esm": "rollup -c"
+    "lint": "eslint . --ext .ts"
   },
   "license": "MIT",
   "author": "Chris Umbel <[email protected]>",

spec/test_esm_bundle/test_imports.mjs

@@ -0,0 +1 @@
+import natural from '../../dist/esm/index.js'

tsconfig.json

@@ -10,16 +10,17 @@
     "baseUrl": "./",
     "moduleResolution": "node",
     "allowJs": true,
-    "outDir": "./dist",
+    "outDir": "./dist/cjs",
     "esModuleInterop": true,
     "forceConsistentCasingInFileNames": true,
     "strict": true
   },
   "include": [
     "lib/natural/**/*.ts",
     "spec/*.ts",
-    "io_spec/*.ts"
-, "lib/natural/analyzers/SenType.ts"  ],
+    "io_spec/*.ts",
+    "lib/natural/analyzers/SenType.ts"
+  ],
   "exclude": [
     "./node_modules"
   ]