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# @aws-crypto/supports-web-crypto
Functions to check web crypto support for browsers.
## Usage
```
import {supportsWebCrypto} from '@aws-crypto/supports-web-crypto';
if (supportsWebCrypto(window)) {
// window.crypto.subtle.encrypt will exist
}
```
## supportsWebCrypto
Used to make sure `window.crypto.subtle` exists and implements crypto functions
as well as a cryptographic secure random source exists.
## supportsSecureRandom
Used to make sure that a cryptographic secure random source exists.
Does not check for `window.crypto.subtle`.
## supportsSubtleCrypto
## supportsZeroByteGCM
## Test
`npm test`