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diff --git a/@linaria/babel.config.js b/@linaria/babel.config.js
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+/*
+ * The following environments are supported:
+ *
+ * (unspecified): Produces ES module output, no language features
+ *   (except non-standard ones) are transpiled.
+ * "legacy": Produces CommonJS output, uses @babel/preset-env to target
+ *   Node.js 10 and specific browsers.
+ * "test": Used by Jest, produces CommonJS output, targetting
+ *   the current Node.js version.
+ */
+
+/*
+ * Configuration for the legacy build
+ */
+
+const commonJSTargets = {
+  browsers: ['last 2 versions', 'not op_mini all', 'not dead'],
+  node: '10',
+};
+
+module.exports = {
+  presets: ['@babel/preset-typescript'],
+  plugins: ['@babel/plugin-proposal-class-properties'],
+  env: {
+    legacy: {
+      presets: [
+        [
+          '@babel/preset-env',
+          {
+            targets: {
+              node: commonJSTargets.node,
+            },
+          },
+        ],
+      ],
+    },
+    test: {
+      presets: [
+        [
+          '@babel/preset-env',
+          {
+            targets: {
+              node: '10',
+            },
+          },
+        ],
+      ],
+    },
+  },
+  overrides: [
+    {
+      /**
+       * only react and core packages are targeted to be run in the browser
+       */
+      test: /\/packages\/((react)|(core))\//,
+      presets: ['@babel/preset-react'],
+      env: {
+        legacy: {
+          presets: [
+            [
+              '@babel/preset-env',
+              {
+                targets: {
+                  browsers: commonJSTargets.browsers,
+                },
+                loose: true,
+                // our styled component should not need to use any polyfill. We do not include core-js in dependencies. However, we leave this to detect if future changes would not introduce any need for polyfill
+                useBuiltIns: 'usage',
+                // Even core-js doesn't remember IE11
+                exclude: [
+                  /es\.array\.(?:filter|for-each|index-of|join|reduce|slice)/,
+                  'es.function.name',
+                  'es.object.keys',
+                  'web.dom-collections.for-each',
+                ],
+                corejs: 3,
+                // this is used to test if we do not introduced core-js polyfill
+                debug: process.env.DEBUG_CORE_JS === 'true',
+              },
+            ],
+          ],
+        },
+      },
+    },
+    {
+      /**
+       * we have to transpile JSX in tests
+       */
+      test: /\/((__tests__)|(__fixtures__))\//,
+      presets: ['@babel/preset-react'],
+    },
+  ],
+};