Support inline enum and update rollup/terser version to latest.

.eslintrc.json

@@ -27,9 +27,7 @@
         "no-mixed-spaces-and-tabs": "off",
         "no-cond-assign": "off",
         "import/no-extraneous-dependencies": ["error"],
-        "@typescript-eslint/explicit-function-return-type": [
-            "error"
-        ],
+        "@typescript-eslint/explicit-function-return-type": ["error", { "allowIIFEs": true }],
         "@typescript-eslint/ban-types": [
             "error",
             {
@@ -47,6 +45,16 @@
         "semi": [
             "error",
             "always"
+        ],
+        "indent": [
+            "error", 4, {
+                "SwitchCase": 0,
+                "ignoredNodes": [
+                    "FunctionExpression > .params[decorators.length > 0]",
+                    "FunctionExpression > .params > :matches(Decorator, :not(:first-child))",
+                    "ClassBody.body > PropertyDefinition[decorators.length > 0] > .key"
+                ]
+              }
         ]
     }
 }

modules/build-engine/package.json

@@ -26,6 +26,12 @@
     "@babel/parser": "^7.20.13",
     "@babel/traverse": "^7.20.13",
 
+    "magic-string": "^0.30.10",
+    "@rollup/plugin-replace": "5.0.7",
+    "@rollup/pluginutils": "5.1.0",
+    "ast-kit": "1.0.0",
+    "fast-glob": "3.3.2",
+
     "@types/resolve": "^1.20.2",
     "dedent": "^0.7.0",
     "fs-extra": "~11.1.1",

modules/build-engine/src/engine-js/babel-plugins/decorator-parser.ts

@@ -15,9 +15,9 @@
 /// type definitions varies by versions
 // import * as t from '@babel/types';
 declare namespace t {
     type Identifier = any;
     type Import = any;
     type StringLiteral = any;
     type SequenceExpression = any;
     type ClassDeclaration = any;
     type ObjectExpression = any;
@@ -344,7 +344,10 @@
                 }
 
 
-                const currentClassName = nodePath.node.id.name;
+                const currentClassName = nodePath.node.id?.name;
+                if (!currentClassName) {
+                    return;
+                }
                 const classDecoratorNodes: any[] | undefined | null = nodePath.node.decorators;
                 let classDecoratorResults: DecoratorParseResult[] = [];
                 if (!classDecoratorNodes) { // filter #3, no decorators for current class

modules/build-engine/src/engine-js/index.ts

@@ -11,6 +11,7 @@ import { externalWasmLoader } from './rollup-plugins/external-wasm-loader';
 import { StatsQuery } from '@ccbuild/stats-query';
 import { filePathToModuleRequest } from '@ccbuild/utils';
 import { rpNamedChunk } from './rollup-plugins/systemjs-named-register-plugin';
+import { rpInlineEnum } from './rollup-plugins/inline-enum';
 
 // import babel
 import babel = Transformer.core;
@@ -28,7 +29,7 @@ import RollupBabelInputPluginOptions = Bundler.plugins.babel.RollupBabelInputPlu
 import json = Bundler.plugins.json;
 import resolve = Bundler.plugins.nodeResolve;
 import commonjs = Bundler.plugins.commonjs;
-import rpTerser = Bundler.plugins.terser.terser;
+import rpTerser = Bundler.plugins.terser;
 import rpVirtual = Bundler.plugins.virtual;
 import { ModuleQuery } from '@ccbuild/modularize';
 // import rpProgress = Bundler.plugins.progress;
@@ -241,6 +242,12 @@ export async function buildJsEngine(options: Required<buildEngine.Options>): Pro
         ));
     }
 
+    const inlineEnumPlugins = await rpInlineEnum({ 
+        scanDir: ps.join(engineRoot, 'cocos'),
+        // exclude: ['*.jsb.ts'],
+        // scanPattern: '**/*.{cts,mts,ts,tsx}'
+    });
+
     rollupPlugins.push(
         externalWasmLoader({
             externalRoot: ps.join(engineRoot, 'native/external'),
@@ -297,7 +304,13 @@ export async function buildJsEngine(options: Required<buildEngine.Options>): Pro
             ],
             sourceMap: false,
         }),
+    );
+
+    if (options.inlineEnum) {
+        rollupPlugins.push(...inlineEnumPlugins);
+    }
 
+    rollupPlugins.push(
         rpBabel({
             skipPreflightCheck: true,
             ...babelOptions,
@@ -325,10 +338,14 @@ export async function buildJsEngine(options: Required<buildEngine.Options>): Pro
                 unsafe_methods: true,
                 passes: 2,  // first: remove deadcodes and const objects, second: drop variables
             },
-            mangle: doUglify,
-            keep_fnames: !doUglify,
+            mangle: {
+                properties: {
+                    regex: /^[a-zA-Z_][a-zA-Z0-9_]{3,}\$$/,
+                }
+            },
+            keep_fnames: false,
             output: {
-                beautify: !doUglify,
+                beautify: false,
             },
 
             // https://github.com/rollup/rollup/issues/3315