fix(babel-preset-gatsby): Add corejs to config (#12781)

* Add corejs to babel-preset-gatsby's config Fixes #12744 * bump @babel/preset-env to 7.4.1 to allow corejs config value
gatsbyjs · Mar 23, 2019 · 4b49da1 · 4b49da1
1 parent c248734
commit 4b49da1
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diff --git a/packages/babel-preset-gatsby/package.json b/packages/babel-preset-gatsby/package.json
@@ -6,7 +6,7 @@
     "@babel/plugin-proposal-class-properties": "^7.0.0",
     "@babel/plugin-syntax-dynamic-import": "^7.0.0",
     "@babel/plugin-transform-runtime": "^7.0.0",
-    "@babel/preset-env": "^7.0.0",
+    "@babel/preset-env": "^7.4.1",
     "@babel/preset-react": "^7.0.0",
     "babel-plugin-macros": "^2.4.2"
   },

diff --git a/packages/babel-preset-gatsby/src/__tests__/index.js b/packages/babel-preset-gatsby/src/__tests__/index.js
@@ -8,6 +8,7 @@ it(`Specifies proper presets and plugins for test stage`, () => {
     [
       expect.stringContaining(path.join(`@babel`, `preset-env`)),
       {
+        corejs: 2,
         loose: true,
         modules: `commonjs`,
         useBuiltIns: `usage`,
@@ -62,6 +63,7 @@ it(`Specifies proper presets and plugins for build-html stage`, () => {
     [
       expect.stringContaining(path.join(`@babel`, `preset-env`)),
       {
+        corejs: 2,
         loose: true,
         modules: false,
         useBuiltIns: `usage`,
@@ -109,6 +111,7 @@ it(`Allows to configure browser targets`, () => {
   expect(presets[0]).toEqual([
     expect.stringContaining(path.join(`@babel`, `preset-env`)),
     {
+      corejs: 2,
       loose: true,
       modules: false,
       useBuiltIns: `usage`,

diff --git a/packages/babel-preset-gatsby/src/index.js b/packages/babel-preset-gatsby/src/index.js
@@ -45,6 +45,7 @@ module.exports = function preset(_, options = {}) {
       [
         resolve(`@babel/preset-env`),
         {
+          corejs: 2,
           loose: true,
           modules: stage === `test` ? `commonjs` : false,
           useBuiltIns: `usage`,