fix(babel): default polyfills need es6.array.iterator for IE (#1769)

close #1642
vuejs · Jul 5, 2018 · bda6dea · bda6dea
1 parent 701d02a
commit bda6dea
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diff --git a/packages/@vue/babel-preset-app/__tests__/babel-preset.spec.js b/packages/@vue/babel-preset-app/__tests__/babel-preset.spec.js
@@ -29,6 +29,8 @@ test('polyfill detection', () => {
  }))
  // default includes
  expect(code).toMatch(`import "core-js/modules/es6.promise"`)
+ // promise polyfill alone doesn't work in IE, needs this as well. fix: #1642
+ expect(code).toMatch(`import "core-js/modules/es6.array.iterator"`)
  // usage-based detection
  expect(code).toMatch(`import "core-js/modules/es6.map"`)
 })

diff --git a/packages/@vue/babel-preset-app/index.js b/packages/@vue/babel-preset-app/index.js
@@ -1,7 +1,10 @@
 const path = require('path')
 
 const defaultPolyfills = [
- 'es6.promise'
+ 'es6.promise',
+ // promise polyfill alone doesn't work in IE,
+ // needs this as well. see: #1642
+ 'es6.array.iterator'
 ]
 
 function getPolyfills (targets, includes, { ignoreBrowserslistConfig, configPath }) {