Add node modules and compiled JavaScript from main (#54)

Co-authored-by: Oliver King <oking3@uncc.edu>

node_modules/jose/lib/help/get_key.js

@@ -0,0 +1,35 @@
+const errors = require('../errors')
+const Key = require('../jwk/key/base')
+const importKey = require('../jwk/import')
+const { KeyStore } = require('../jwks/keystore')
+
+module.exports = (input, keyStoreAllowed = false) => {
+  if (input instanceof Key) {
+    return input
+  }
+
+  if (input instanceof KeyStore) {
+    if (!keyStoreAllowed) {
+      throw new TypeError('key argument for this operation must not be a JWKS.KeyStore instance')
+    }
+
+    return input
+  }
+
+  try {
+    return importKey(input)
+  } catch (err) {
+    if (err instanceof errors.JOSEError && !(err instanceof errors.JWKImportFailed)) {
+      throw err
+    }
+
+    let msg
+    if (keyStoreAllowed) {
+      msg = 'key must be an instance of a key instantiated by JWK.asKey, a valid JWK.asKey input, or a JWKS.KeyStore instance'
+    } else {
+      msg = 'key must be an instance of a key instantiated by JWK.asKey, or a valid JWK.asKey input'
+    }
+
+    throw new TypeError(msg)
+  }
+}