Add encryptor types (#293)

* add encryptor types

* test: refactor tests

* refactor: rename KeyEncryptor to ExportableKeyEncryptor

* docs: add encryptor type jsdocs

* refactor: use json type instead of generic

* refactor: MockEncryptor implements ExportableKeyEncryptor

* docs: fix typo

* refactor: rename unsupported key export error enum

* refactor: use persistAllKeyrings to recreate vault

* refactor: remove unused method from type

* refactor: make encryptor and cacheEncryptionKey private

* apply @mcmire suggestions

Co-authored-by: Elliot Winkler <[email protected]>

* chore: bump browser-passworder

* refactor: salt must be defined when key is present

* refactor: unlockKeyrings tests

* refactor: KeyringControllerState type

* refactor: enforce encryptor and cacheEncryptionKey types

---------

Co-authored-by: Elliot Winkler <[email protected]>

jest.config.js

@@ -41,10 +41,10 @@ module.exports = {
   // An object that configures minimum threshold enforcement for coverage results
   coverageThreshold: {
     global: {
-      branches: 71.42,
-      functions: 92.85,
-      lines: 90.68,
-      statements: 90.9,
+      branches: 79.41,
+      functions: 93.22,
+      lines: 91.5,
+      statements: 91.69,
     },
   },
   preset: 'ts-jest',

package.json

@@ -44,12 +44,12 @@
   },
   "dependencies": {
     "@ethereumjs/tx": "^4.2.0",
-    "@metamask/browser-passworder": "^4.1.0",
+    "@metamask/browser-passworder": "^4.2.0",
     "@metamask/eth-hd-keyring": "^7.0.1",
     "@metamask/eth-sig-util": "^7.0.0",
     "@metamask/eth-simple-keyring": "^6.0.1",
     "@metamask/obs-store": "^8.1.0",
-    "@metamask/utils": "^8.1.0"
+    "@metamask/utils": "^8.2.0"
   },
   "devDependencies": {
     "@ethereumjs/wallet": "^2.0.0",