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Lock babel configuration back to IE 9 support (ES5) #5033

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merged 1 commit into from
Sep 19, 2018
Merged

Lock babel configuration back to IE 9 support (ES5) #5033

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10 changes: 9 additions & 1 deletion packages/babel-preset-react-app/create.js
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Original file line number Diff line number Diff line change
Expand Up @@ -45,14 +45,22 @@ module.exports = function(api, opts, env) {
require('@babel/preset-env').default,
{
targets: {
node: '6.12',
node: 'current',
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This somehow got goofed during an old merge commit, but current is the behavior we want.

},
},
],
(isEnvProduction || isEnvDevelopment) && [
// Latest stable ECMAScript features
require('@babel/preset-env').default,
{
// We want Create React App to be IE 9 compatible until React itself
// no longer works with IE 9
targets: {
ie: 9,
},
// Users cannot override this behavior because this Babel
// configuration is highly tuned for ES5 support
ignoreBrowserslistConfig: true,
// `entry` transforms `@babel/polyfill` into individual requires for
// the targeted browsers. This is safer than `usage` which performs
// static code analysis to determine what's required.
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