eslint: enable extra rules

no-implicit-coercion, no-extra-boolean-cast, no-invalid-this, logical-assignment-operators, no-unmodified-loop-condition

packages/hydrooj/src/init.ts

@@ -18,7 +18,7 @@ if (!global.Hydro) {
         lib: {},
         module: new Proxy({} as any, {
             get(self, key) {
-                if (!self[key]) self[key] = {};
+                self[key] ||= {};
                 return self[key];
             },
         }),