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docs: update README example and REPL link (#11799)

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Huáng Jùnliàng 2020-07-06 20:21:38 -04:00 committed by GitHub
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README.md
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@ -63,19 +63,21 @@ Babel is a tool that helps you write code in the latest version of JavaScript. W
**In**
```js
// ES2015 arrow function
[1, 2, 3].map((n) => n + 1);
// ES2020 nullish coalescing
function greet(input) {
return input ?? "Hello world";
}
```
**Out**
```js
[1, 2, 3].map(function(n) {
return n + 1;
});
function greet(input) {
return input != null ? input : "Hello world";
}
```
Try it out at our [REPL](https://babeljs.io/repl/build/main#?code_lz=NoRgNATGDMC6B0BbAhgBwBQDsAEBeAfNjgNTYgCUA3EA&lineWrap=true&presets=es2015%2Ces2016%2Ces2017&version=7.0.0-beta.2).
Try it out at our [REPL](https://babel.dev/repl#?browsers=defaults%2C%20not%20ie%2011&loose=true&code_lz=GYVwdgxgLglg9mABAcwE4FN1QBQzABxCgEpEBvAKEUQyhFST0KkQH5XEAiACXQBs-cRAHc4qPgBNOAbgoBfIA&shippedProposals=true&sourceType=script&lineWrap=true&presets=env%2Cenv&prettier=true).
## FAQ