message: Guard against wasm not being supported
diff: @@ -93,7 +93,7 @@ Blake2b.prototype.digest = function (enc) {
  // libsodium compat
  Blake2b.prototype.final = Blake2b.prototype.digest
  -Blake2b.WASM = wasm.buffer
  +Blake2b.WASM = wasm && wasm.buffer
  Blake2b.SUPPORTED = typeof WebAssembly !== 'undefined'
  Blake2b.ready = function (cb) {
  