change ts target to es5, module system to commonjs. add a script to

clean the build on windows.

Author: sbazerque

package.json

@@ -12,8 +12,9 @@
     "url": "https://github.com/hyperhyperspace/hyperhyperspace-core.git"
   },
   "scripts": {
-    "build": "ttsc",
+    "build": "npx ttsc",
     "clean": "rm -rf ./dist/*",
+    "winclean": "if exist dist (rmdir dist /s /q) && mkdir dist",
     "test": "npx jest"
   },
   "devDependencies": {

tsconfig.json

@@ -4,8 +4,8 @@
 
     /* Basic Options */
     "incremental": true,                   /* Enable incremental compilation */
-    "target": "es2015",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */
-    "module": "ESNext",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */
+    "target": "es5",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */
+    "module": "commonjs",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */
     "lib": ["dom", "esnext"],                             /* Specify library files to be included in the compilation. */
     // "allowJs": true,                       /* Allow javascript files to be compiled. */
     // "checkJs": true,                       /* Report errors in .js files. */