intl-fallback-symbol/README.md

ECMA-402 Intl spec's internal `FallbackSymbol`

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ECMA-402 Intl spec's internal `FallbackSymbol`.

This Symbol is well-known - shared across realms.

It is present in the following engines with the description `"IntlLegacyConstructedSymbol"` ([spec](https://tc39.es/ecma402/#intl-object)):
 - node >= 16
 - Chrome >= 91
 - Safari >= 14.1
 - Firefox >= 54

It is present in the following engines with the description `"IntlFallback"`: <sub>(The [ES2017 Intl spec](https://402.ecma-international.org/4.0/#intl-object) did not specify a description)</sub>
- node >=8 <16
- Chrome 57 - 90

When it is present, the package will export it; when not, it will export `undefined`.

## Example

```js
var IntlFallbackSymbol = require('intl-fallback-symbol');

var assert = require('assert');

assert(typeof IntlFallbackSymbol === 'symbol');
```

## Tests
Simply clone the repo, `npm install`, and run `npm test`

[package-url]: https://npmjs.org/package/intl-fallback-symbol
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