fix(build): treeshakability and correct types for commonjs (#294)

Author: ValeraS

gulpfile.js

@@ -8,6 +8,8 @@ const rimraf = require('rimraf');
 
 const BUILD_DIR = path.resolve('build');
 
+const {version, sideEffects} = require('./package.json');
+
 task('clean', (done) => {
     rimraf.sync(BUILD_DIR);
     done();
@@ -49,7 +51,11 @@ async function compileTs(modules = false) {
             .pipe(
                 utils.addVirtualFile({
                     fileName: 'package.json',
-                    text: JSON.stringify({type: modules ? 'module' : 'commonjs'}),
+                    text: JSON.stringify({
+                        version,
+                        type: modules ? 'module' : 'commonjs',
+                        sideEffects,
+                    }),
                 }),
             )
             .pipe(dest(path.resolve(BUILD_DIR, moduleType)))

package.json

@@ -9,14 +9,24 @@
   },
   "exports": {
     ".": {
-      "types": "./build/esm/index.d.ts",
-      "require": "./build/cjs/index.js",
-      "import": "./build/esm/index.js"
+      "import": {
+        "types": "./build/esm/index.d.ts",
+        "default": "./build/esm/index.js"
+      },
+      "require": {
+        "types": "./build/cjs/index.d.ts",
+        "default": "./build/cjs/index.js"
+      }
     },
     "./helpers": {
-      "types": "./build/esm/helpers.d.ts",
-      "require": "./build/cjs/helpers.js",
-      "import": "./build/esm/helpers.js"
+      "import": {
+        "types": "./build/esm/helpers.d.ts",
+        "default": "./build/esm/helpers.js"
+      },
+      "require": {
+        "types": "./build/cjs/helpers.d.ts",
+        "default": "./build/cjs/helpers.js"
+      }
     }
   },
   "files": [