Update jsonld dep, separate out sha256digest code into browser and RN.

Author: dmitrizagidulin

lib/sha256digest-reactnative.js

@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2021 Digital Bazaar, Inc. All rights reserved.
+ */
+'use strict';
+
+const crypto = require('isomorphic-webcrypto');
+require('fast-text-encoding');
+
+module.exports = {
+  /**
+   * Hashes a string of data using SHA-256.
+   *
+   * @param {string} string - the string to hash.
+   *
+   * @return {Uint8Array} the hash digest.
+   */
+  async sha256digest({string}) {
+    const bytes = new TextEncoder().encode(string);
+    return new Uint8Array(
+      await crypto.subtle.digest('SHA-256', bytes)
+    );
+  }
+};

package.json

@@ -30,7 +30,9 @@
   ],
   "dependencies": {
     "@digitalbazaar/security-context": "^1.0.0",
-    "jsonld": "digitalbazaar/jsonld.js#v5.2.1-rc1",
+    "fast-text-encoding": "^1.0.3",
+    "isomorphic-webcrypto": "^2.3.8",
+    "jsonld": "digitalbazaar/jsonld.js#v5.2.1-rc2",
     "serialize-error": "^8.0.1"
   },
   "devDependencies": {
@@ -79,6 +81,13 @@
   },
   "browser": {
     "crypto": false,
-    "./lib/sha256digest.js": "./lib/sha256digest-browser.js"
+    "./lib/sha256digest.js": "./lib/sha256digest-browser.js",
+    "fast-text-encoding": false,
+    "isomorphic-webcrypto": false
+  },
+  "react-native": {
+    "crypto": false,
+    "./lib/sha256digest.js": "./lib/sha256digest-reactnative.js",
+    "./lib/sha256digest-browser.js": false
   }
 }