Update babel config (#10855)

package.json

@@ -149,7 +149,7 @@
     "lint:eslint": "cross-env EFF_NO_LINK_RULES=true eslint . --format friendly",
     "lint:changelog": "node ./scripts/lint-changelog.js",
     "lint:prettier": "prettier . \"!test*\" --check",
-    "lint:dist": "eslint --no-eslintrc --no-ignore --no-inline-config --env=es6,browser --parser-options=ecmaVersion:2018 \"dist/!(bin-prettier|index|third-party).js\"",
+    "lint:dist": "eslint --no-eslintrc --no-ignore --no-inline-config --env=es6,browser --parser-options=ecmaVersion:2019 \"dist/!(bin-prettier|index|third-party).js\"",
     "lint:spellcheck": "cspell \"**/*\" \".github/**/*\"",
     "lint:deps": "node ./scripts/check-deps.js",
     "fix": "run-s fix:eslint fix:prettier",

scripts/build/build.js

@@ -22,7 +22,7 @@ process.on("unhandledRejection", (err) => {
   process.exit(1);
 });
 
-const CACHE_VERSION = "v33"; // This need update when updating build scripts
+const CACHE_VERSION = "v34"; // This need update when updating build scripts
 const statusConfig = [
   { color: "bgYellow", text: "CACHED" },
   { color: "bgGreen", text: "DONE" },

scripts/build/bundler.js

@@ -83,6 +83,9 @@ function webpackNativeShims(config, modules) {
 function getBabelConfig(bundle) {
   const config = {
     babelrc: false,
+    assumptions: {
+      setSpreadProperties: true,
+    },
     sourceType: "unambiguous",
     plugins: bundle.babelPlugins || [],
     compact: bundle.type === "plugin" ? false : "auto",
@@ -104,7 +107,7 @@ function getBabelConfig(bundle) {
   }
   config.presets = [
     [
-      require.resolve("@babel/preset-env"),
+      "@babel/preset-env",
       {
         targets,
         exclude: [
@@ -114,7 +117,6 @@ function getBabelConfig(bundle) {
           "es.string.replace",
           "es.symbol.description",
           "es.typed-array.*",
-          "transform-async-to-generator",
           "web.*",
         ],
         modules: false,
@@ -126,13 +128,10 @@ function getBabelConfig(bundle) {
       },
     ],
   ];
-  config.plugins.push(
-    [
-      require.resolve("@babel/plugin-proposal-object-rest-spread"),
-      { loose: true, useBuiltIns: true },
-    ],
-    require.resolve("@babel/plugin-proposal-optional-catch-binding")
-  );
+  config.plugins.push([
+    "@babel/plugin-proposal-object-rest-spread",
+    { useBuiltIns: true },
+  ]);
   return config;
 }