Replace deprecated terser plugin

.nvmrc

@@ -1 +1 @@
-14.15.1
+20.16.0

lib/resolve-dirs-plugin.js

@@ -10,12 +10,12 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-import { posix as pathUtils, isAbsolute } from 'path';
+import { posix, isAbsolute, resolve } from 'path';
 
 export default function resolveDirs(paths) {
   const pathBaseDir = paths.map((path) => [
-    pathUtils.basename(path),
-    pathUtils.dirname(path),
+    posix.basename(path),
+    posix.dirname(path),
   ]);
 
   return {
@@ -31,7 +31,7 @@ export default function resolveDirs(paths) {
         throw new Error(`Couldn't find ${'./' + id}`);
       }
       if (isAbsolute(resolveResult.id)) return resolveResult.id;
-      return pathUtils.resolve(resolveResult.id);
+      return resolve(resolveResult.id);
     },
   };
 }

lib/simple-ts.js

@@ -64,6 +64,7 @@ export default function simpleTS(mainPath, { noBuild, watch } = {}) {
       await new Promise((resolve) => {
         const proc = spawn(tscPath, args, {
           stdio: 'inherit',
+          shell: true,
         });
 
         proc.on('exit', (code) => {