fix: should inline enum in emited js

Author: johnsoncodehk

build.js

@@ -28,9 +28,16 @@ const typesProgram = ts.createProgram({
 const readFile = ts.sys.readFile;
 ts.sys.readFile = (fileName) => {
 	if (path.basename(fileName) === 'system.ts') {
-		return readFile(fileName)
-			.replace(`export const enum ReactiveFlags {`, `export const ReactiveFlags = {`)
-			.replace(/(\w+) = (\d+),/g, `$1: $2,`);
+		return readFile(fileName) + `
+export const ReactiveFlags = {
+	None: 0,
+	Mutable: 1,
+	Watching: 2,
+	RecursedCheck: 4,
+	Recursed: 8,
+	Dirty: 16,
+	Pending: 32,
+};`;
 	}
 	return readFile(fileName);
 }