modules: fix browser compilation.

browser/empty.js

@@ -1,2 +1,2 @@
 // Empty module for browserify.
-exports.empty = true;
+exports.unsupported = true;

lib/crypto/crypto.js

@@ -14,7 +14,7 @@ var utils = require('../utils/utils');
 var co = require('../utils/co');
 var native = require('../utils/native').binding;
 var backend = require('./backend');
-var lazy = require('../utils/lazy')(require, exports);
+var lazy = utils.lazy(require, exports);
 
 /**
  * @exports crypto

lib/crypto/ec-elliptic.js

@@ -11,7 +11,7 @@ var assert = require('assert');
 var elliptic = require('elliptic');
 var secp256k1 = elliptic.ec('secp256k1');
 var Signature = require('elliptic/lib/elliptic/ec/signature');
-var curve = elliptic.curve;
+var curve = secp256k1.curve;
 var BN = require('bn.js');
 
 /**

lib/utils/utils.js

@@ -1946,6 +1946,9 @@ utils.U32 = function U32(num) {
 
 utils.lazy = require('./lazy');
 
+if (utils.lazy.unsupported)
+  utils.lazy = function() { return utils.nop; };
+
 /*
  * Expose other objects.
  */

package.json

@@ -68,7 +68,7 @@
     "./lib/http/server": "./browser/empty.js",
     "./lib/http/wallet": "./browser/empty.js",
     "./lib/utils/lazy": "./browser/empty.js",
-    "./lib/crypto/native": "./lib/crypto/empty.js",
+    "./lib/utils/native": "./browser/empty.js",
     "./lib/utils/nfkd": "./lib/utils/nfkd-browser.js",
     "./lib/utils/nexttick": "./lib/utils/nexttick-browser.js",
     "./lib/crypto/backend": "./lib/crypto/backend-browser.js",