babel: Switch to static config to enable caching (#2359)

Author: IvanGoncharov

.babelrc

@@ -0,0 +1,27 @@
+{
+  "presets": [["@babel/preset-env", { "targets": { "node": "current" } }]],
+  "plugins": [
+    "./resources/inline-invariant",
+    "@babel/plugin-transform-flow-strip-types"
+  ],
+  "overrides": [
+    {
+      "exclude": ["**/__tests__/**/*", "**/__fixtures__/**/*"],
+      "presets": ["@babel/preset-env"],
+      "plugins": [
+        ["@babel/plugin-transform-classes", { "loose": true }],
+        ["@babel/plugin-transform-destructuring", { "loose": true }],
+        ["@babel/plugin-transform-spread", { "loose": true }],
+        ["@babel/plugin-transform-for-of", { "assumeArray": true }]
+      ],
+      "env": {
+        "cjs": {
+          "presets": [["@babel/preset-env", { "modules": "commonjs" }]]
+        },
+        "mjs": {
+          "presets": [["@babel/preset-env", { "modules": false }]]
+        }
+      }
+    }
+  ]
+}