Add node subpath export (#741)

Author: Borewit

package.json

@@ -15,16 +15,22 @@
 		".": {
 			"node": {
 				"types": "./index.d.ts",
-				"import": "./index.js"
+				"import": "./index.js",
+				"module-sync": "./index.js"
 			},
 			"default": {
 				"types": "./core.d.ts",
-				"import": "./core.js"
+				"import": "./core.js",
+				"module-sync": "./core.js"
 			}
 		},
 		"./core": {
 			"types": "./core.d.ts",
-			"import": "./core.js"
+			"default": "./core.js"
+		},
+		"./node": {
+			"types": "./index.d.ts",
+			"default": "./index.js"
 		}
 	},
 	"sideEffects": false,