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# @solana/assertions

This package contains utilities for asserting that a JavaScript environment supports certain features necessary for the operation of the Solana JavaScript SDK.

## Functions

`assertDigestCapabilityIsAvailable()`

Throws an exception unless `crypto.subtle.digest()` is available in the current JavaScript environment.

`assertKeyExporterIsAvailable()`

Throws an exception unless `crypto.subtle.exportKey()` is available in the current JavaScript environment.

`assertKeyGenerationIsAvailable()`

Throws an exception unless `crypto.subtle.generateKey()` is available in the current JavaScript environment and has support for the `Ed25519` curve.

`assertSigningCapabilityIsAvailable()`

Throws an exception unless `crypto.subtle.sign()` is available in the current JavaScript environment.

`assertVerificationCapabilityIsAvailable()`

Throws an exception unless `crypto.subtle.sign()` is available in the current JavaScript environment.