sodium is now a peerDependency making it easier to use it in a browse…

…r env without the need of installing also sodium

package.json

@@ -36,8 +36,10 @@
   "dependencies": {
     "bignumber.js": "^4.0.4",
     "bytebuffer": "^5.0.1",
-    "is-empty": "^1.2.0",
-    "sodium": "^2.0.1"
+    "is-empty": "^1.2.0"
+  },
+  "peerDependencies": {
+    "sodium": "^2.0.3"
   },
   "devDependencies": {
     "@types/bytebuffer": "^5.0.33",
@@ -50,7 +52,6 @@
     "chai": "^4.1.0",
     "coveralls": "^3.0.0",
     "empty-module": "0.0.2",
-    "js-nacl": "^1.2.2",
     "karma": "^1.7.0",
     "karma-chai": "^0.1.0",
     "karma-chrome-launcher": "^2.2.0",

src/trxTypes/BaseTx.ts

@@ -1,7 +1,7 @@
 import BigNumber from 'bignumber.js';
 import * as ByteBuffer from 'bytebuffer';
 import * as empty from 'is-empty';
-import {api as sodium} from 'sodium';
+import {api as sodium} from '../utils/sodium';
 
 import {bigNumberFromBuffer, bigNumberToBuffer} from '../utils/bignumber';
 import {toSha256} from '../utils/sha256';

src/utils/sodium.ts

@@ -0,0 +1,12 @@
+let toExport;
+// tslint:disable no-var-requires
+try {
+  toExport = require('sodium');
+  if (typeof(toExport) === 'undefined' || typeof(toExport.api) === 'undefined') {
+    throw new Error('switch to JS implementation');
+  }
+} catch (err) {
+  // Sodium does not exist.
+  toExport = require('../browser/sodium');
+}
+export const api = toExport.api;

src/wallet.ts

@@ -1,5 +1,5 @@
-import {api as sodium} from 'sodium';
 import {toSha256} from './utils/sha256';
+import {api as sodium} from './utils/sodium';
 // tslint:disable-next-line no-var-requires
 /**
  * Generic Abstract Wallet.

webpack.config.js

@@ -27,7 +27,7 @@ const commonConfig = {
   resolve: {
     extensions: [".tsx", ".ts", ".js"],
     alias     : {
-      'sodium': path.resolve(__dirname, 'src/browser/sodium.ts'),
+      'sodium': 'empty-module',
       'crypto': 'empty-module',
       './utils/sha256': path.resolve(__dirname, 'src/browser/sha256.ts'),
       '../utils/sha256': path.resolve(__dirname, 'src/browser/sha256.ts'),