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add builtins assumptions #2283

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add builtins assumptions #2283

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c334d26
add builtins assumptions
JLHwung Jun 25, 2020
be90656
Update docs/caveats.md
JLHwung Aug 4, 2020
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12 changes: 8 additions & 4 deletions docs/caveats.md
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Expand Up @@ -10,14 +10,18 @@ Babel feature requirements by using [@babel/polyfill](polyfill.md).

You may alternatively/selectively include what you need:

| Feature | Requirements |
| --------------------------- | ------------------------------------------------------------------------------------- |
| Feature | Requirements |
| --------------------------- | ------------------------------------------------------------------------------------------------------- |
| Async functions, Generators | [regenerator runtime](https://github.com/facebook/regenerator/tree/master/packages/regenerator-runtime) |
| Array destructuring, For Of | `Symbol`, `prototype[Symbol.iterator]` |
| Spread | `Array.from` |
| Array destructuring, For Of | `Symbol`, `prototype[Symbol.iterator]` |
| Spread | `Array.from` |

There is also the `loose` option for some of these plugins.

## Built-ins

Babel assumes that built-ins (e.g. `Array`, `WeakMap` and others) are not modified in a spec-incompliant way. That said, Babel still accepts proper polyfills of built-ins.
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## Classes

Built-in classes such as `Date`, `Array`, `DOM` etc cannot be properly subclassed
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12 changes: 8 additions & 4 deletions website/versioned_docs/version-6.26.3/caveats.md
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Expand Up @@ -11,14 +11,18 @@ Babel feature requirements by using [babel-polyfill](polyfill.md).

You may alternatively/selectively include what you need:

| Feature | Requirements |
| --------------------------- | ------------------------------------------------------------------------------------- |
| Feature | Requirements |
| --------------------------- | ------------------------------------------------------------------------------------------------------- |
| Async functions, Generators | [regenerator runtime](https://github.com/facebook/regenerator/tree/master/packages/regenerator-runtime) |
| Array destructuring, For Of | `Symbol`, `prototype[Symbol.iterator]` |
| Spread | `Array.from` |
| Array destructuring, For Of | `Symbol`, `prototype[Symbol.iterator]` |
| Spread | `Array.from` |

There is also the `loose` option for some of these plugins.

## Built-ins

Babel assumes that built-ins (e.g. `Array`, `WeakMap` and others) are not modified in a spec-incompliant way. That said, Babel still accepts proper polyfills of built-ins.

## Classes

Built-in classes such as `Date`, `Array`, `DOM` etc cannot be properly subclassed
Expand Down
12 changes: 8 additions & 4 deletions website/versioned_docs/version-7.0.0/caveats.md
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Expand Up @@ -11,14 +11,18 @@ Babel feature requirements by using [@babel/polyfill](polyfill.md).

You may alternatively/selectively include what you need:

| Feature | Requirements |
| --------------------------- | ------------------------------------------------------------------------------------- |
| Feature | Requirements |
| --------------------------- | ------------------------------------------------------------------------------------------------------- |
| Async functions, Generators | [regenerator runtime](https://github.com/facebook/regenerator/tree/master/packages/regenerator-runtime) |
| Array destructuring, For Of | `Symbol`, `prototype[Symbol.iterator]` |
| Spread | `Array.from` |
| Array destructuring, For Of | `Symbol`, `prototype[Symbol.iterator]` |
| Spread | `Array.from` |

There is also the `loose` option for some of these plugins.

## Built-ins

Babel assumes that built-ins (e.g. `Array`, `WeakMap` and others) are not modified in a spec-incompliant way. That said, Babel still accepts proper polyfills of built-ins.

## Classes

Built-in classes such as `Date`, `Array`, `DOM` etc cannot be properly subclassed
Expand Down