feat: add browser support

.babelrc

@@ -0,0 +1,4 @@
+{
+  "presets": ["es2015"],
+  "plugins": ["babel-plugin-add-module-exports"]
+}

.eslintignore

@@ -1 +1,2 @@
 coverage/
+dist/index.js

.gitignore

@@ -7,3 +7,4 @@ docs/build/
 /docs/README.intermediate.md
 .tags*
 /jsdoc-out/
+/dist/

karma.conf.js

@@ -1,18 +1,32 @@
 module.exports = function (karma) {
   karma.set({
-
-    frameworks: [ 'browserify', 'mocha' ],
-    files: ['test/*Spec.js'],
+    frameworks: [ 'mocha' ],
+    files: ['test/index.js'],
     preprocessors: {
-      'test/*Spec.js': [ 'browserify' ]
+      'test/index.js': [ 'webpack', 'sourcemap' ]
+    },
+
+    webpack: {
+      devtool: 'inline-source-map',
+      module: {
+        loaders: [
+          { test: /\.js$/, exclude: /node_modules|dist/, loader: 'babel' },
+          { test: /\.json$/, loader: 'json-loader' }
+        ],
+        noParse: [
+          /sinon/
+        ]
+      },
+      resolve: {
+        alias: { sinon: 'sinon/pkg/sinon' }
+      },
+      node: {
+        fs: 'empty'
+      }
     },
 
-    browserify: {
-      debug: true,
-      transform: [
-        'brfs',
-        [ 'babelify', { presets: 'es2015', plugins: 'transform-runtime' } ]
-      ]
+    webpackMiddleware: {
+      stats: 'errors-only'
     },
 
     browsers: [ 'PhantomJS' ]

package.json

@@ -3,21 +3,25 @@
   "version": "3.2.0",
   "description": "Implementation of Interledger condition validation and fulfillment",
   "main": "index.js",
+  "browser": "./dist/index.js",
   "directories": {
     "test": "test"
   },
   "dependencies": {
     "asn1": "^0.2.3",
+    "core-js": "^2.4.1",
     "oer-utils": "^1.2.0",
     "tweetnacl": "^0.14.1"
   },
   "devDependencies": {
+    "babel-loader": "^6.2.7",
+    "babel-plugin-add-module-exports": "^0.2.1",
     "babel-plugin-transform-runtime": "^6.7.5",
+    "babel-polyfill": "^6.16.0",
     "babel-preset-es2015": "^6.9.0",
     "babel-runtime": "^6.9.0",
     "babelify": "^7.2.0",
     "brfs": "^1.4.3",
-    "browserify": "^13.0.1",
     "chai": "^3.2.0",
     "cz-conventional-changelog": "^1.1.5",
     "eslint": "^3.1.1",
@@ -28,20 +32,25 @@
     "interledger-jsdoc-template": "^2.0.0",
     "istanbul-harmony": "^0.3.16",
     "jsdoc": "^3.4.0",
+    "json-loader": "^0.5.4",
     "karma": "^1.1.0",
-    "karma-browserify": "^5.0.5",
     "karma-mocha": "^1.1.0",
     "karma-phantomjs-launcher": "^1.0.0",
+    "karma-sourcemap-loader": "^0.3.7",
+    "karma-webpack": "^1.8.0",
     "md-toc-filter": "^0.9.0",
     "mocha": "^3.0.0",
     "phantomjs-prebuilt": "^2.1.5",
     "readme-to-test": "justmoon/readme-to-test#feature/st-improvements",
     "sinon": "^1.17.4",
     "validate-commit-msg": "^2.1.0",
-    "watchify": "^3.7.0"
+    "watchify": "^3.7.0",
+    "webpack": "^2.1.0-beta.25"
   },
   "scripts": {
     "lint": "eslint .",
+    "build:web": "webpack --config webpack.config.js",
+    "prepublish": "npm run build:web",
     "test:readme": "readme-to-test",
     "test:specs": "NODE_ENV=unit node node_modules/.bin/istanbul test -- _mocha",
     "test:phantom": "karma start --single-run",

src/lib/condition.js

@@ -12,6 +12,7 @@ const MissingDataError = require('../errors/missing-data-error')
 const base64url = require('../util/base64url')
 const Reader = require('oer-utils/reader')
 const Writer = require('oer-utils/writer')
+const isInteger = require('core-js/library/fn/number/is-integer')
 
 // Regex for validating conditions
 //
@@ -214,7 +215,7 @@ class Condition {
    * @param {Number} Maximum fulfillment payload length in bytes.
    */
   setMaxFulfillmentLength (maxFulfillmentLength) {
-    if (!Number.isInteger(maxFulfillmentLength)) {
+    if (!isInteger(maxFulfillmentLength)) {
       throw new TypeError('Fulfillment length must be an integer')
     } else if (maxFulfillmentLength < 0) {
       throw new TypeError('Fulfillment length must be positive or zero')

src/types/threshold-sha256.js

@@ -11,6 +11,7 @@ const Predictor = require('oer-utils/predictor')
 const Writer = require('oer-utils/writer')
 const MissingDataError = require('../errors/missing-data-error')
 const ParseError = require('../errors/parse-error')
+const isInteger = require('core-js/library/fn/number/is-integer')
 
 const EMPTY_BUFFER = new Buffer(0)
 
@@ -71,7 +72,7 @@ class ThresholdSha256 extends BaseSha256 {
 
     if (typeof weight === 'undefined') {
       weight = 1
-    } else if (!Number.isInteger(weight) || weight < 1) {
+    } else if (!isInteger(weight) || weight < 1) {
       throw new TypeError('Invalid weight, not an integer: ' + weight)
     }
 
@@ -105,7 +106,7 @@ class ThresholdSha256 extends BaseSha256 {
 
     if (typeof weight === 'undefined') {
       weight = 1
-    } else if (!Number.isInteger(weight)) {
+    } else if (!isInteger(weight)) {
       throw new Error('Invalid weight, not an integer: ' + weight)
     }
 
@@ -127,7 +128,7 @@ class ThresholdSha256 extends BaseSha256 {
    * @param {Number} threshold Integer threshold
    */
   setThreshold (threshold) {
-    if (!Number.isInteger(threshold) || threshold < 1) {
+    if (!isInteger(threshold) || threshold < 1) {
       throw new TypeError('Threshold must be a integer greater than zero, was: ' +
         threshold)
     }

test/fulfillmentSpec.js

@@ -9,23 +9,23 @@ describe('Fulfillment', function () {
     it('successfully parses the minimal fulfillment', function () {
       const fulfillment = Fulfillment.fromUri('cf:0:')
 
-      assert.equal(fulfillment.constructor.name, 'PreimageSha256')
+      assert.equal(fulfillment.constructor, cc.PreimageSha256)
       assert.equal(fulfillment.preimage.toString('hex'), '')
     })
 
     it('successfully parses a basic fulfillment', function () {
       const fulfillment = Fulfillment.fromUri('cf:0:UNhY4JhezH9gQYqvDMWrWH9CwlcKiECVqejMrND2VFw')
 
       const expectedPreimage = new Buffer('UNhY4JhezH9gQYqvDMWrWH9CwlcKiECVqejMrND2VFw=', 'base64')
-      assert.equal(fulfillment.constructor.name, 'PreimageSha256')
+      assert.equal(fulfillment.constructor, cc.PreimageSha256)
       assert.equal(fulfillment.preimage.toString('hex'), expectedPreimage.toString('hex'))
     })
 
     it('successfully parses a fulfillment with base64url characters', function () {
       const fulfillment = Fulfillment.fromUri('cf:0:-u_6')
 
       const expectedPreimage = new Buffer('+u/6', 'base64')
-      assert.equal(fulfillment.constructor.name, 'PreimageSha256')
+      assert.equal(fulfillment.constructor, cc.PreimageSha256)
       assert.equal(fulfillment.preimage.toString('hex'), expectedPreimage.toString('hex'))
     })
 
@@ -99,7 +99,7 @@ describe('Fulfillment', function () {
     it('successfully parses the minimal fulfillment', function () {
       const fulfillment = Fulfillment.fromBinary(new Buffer('000000', 'hex'))
 
-      assert.equal(fulfillment.constructor.name, 'PreimageSha256')
+      assert.equal(fulfillment.constructor, cc.PreimageSha256)
       assert.equal(fulfillment.preimage.toString('hex'), '')
     })
 
@@ -108,15 +108,15 @@ describe('Fulfillment', function () {
       const fulfillment = Fulfillment.fromBinary(fulfillmentBinary)
 
       const expectedPreimage = new Buffer('UNhY4JhezH9gQYqvDMWrWH9CwlcKiECVqejMrND2VFw=', 'base64')
-      assert.equal(fulfillment.constructor.name, 'PreimageSha256')
+      assert.equal(fulfillment.constructor, cc.PreimageSha256)
       assert.equal(fulfillment.preimage.toString('hex'), expectedPreimage.toString('hex'))
     })
 
     it('successfully parses a fulfillment with base64url characters', function () {
       const fulfillment = Fulfillment.fromBinary(new Buffer('000003faeffa', 'hex'))
 
       const expectedPreimage = new Buffer('+u/6', 'base64')
-      assert.equal(fulfillment.constructor.name, 'PreimageSha256')
+      assert.equal(fulfillment.constructor, cc.PreimageSha256)
       assert.equal(fulfillment.preimage.toString('hex'), expectedPreimage.toString('hex'))
     })
 

test/helpers/salt.js

@@ -3,13 +3,34 @@
 const crypto = require('crypto')
 const sinon = require('sinon')
 
-exports.getSaltHelper = function (salt) {
-  const stub = sinon.stub(crypto, 'randomBytes')
-  stub.withArgs(salt.length).returns(salt)
-
-  return { verify: () => {
-    sinon.assert.calledOnce(stub)
-    sinon.assert.calledWith(stub, salt.length)
-    stub.restore()
-  }}
+if (process.browser) {
+  // In the browser tests
+  exports.getSaltHelper = function (salt) {
+    const stub = sinon.stub(global.crypto, 'getRandomValues', (arr) => {
+      if (arr.length !== salt.byteLength) {
+        // throw new Error('Unexpected call to getRandomValues with length ' +
+        //   arr.length + ', expected: ' + salt.byteLength)
+        arr[arr.length - 1] = 1
+      } else {
+        salt.copy(arr)
+      }
+    })
+
+    return { verify: () => {
+      sinon.assert.called(stub)
+      stub.restore()
+    }}
+  }
+} else {
+  // In the Node.js tests
+  exports.getSaltHelper = function (salt) {
+    const stub = sinon.stub(crypto, 'randomBytes')
+    stub.withArgs(salt.length).returns(salt)
+
+    return { verify: () => {
+      sinon.assert.calledOnce(stub)
+      sinon.assert.calledWith(stub, salt.length)
+      stub.restore()
+    }}
+  }
 }

test/index.js

@@ -0,0 +1,11 @@
+// require all modules ending in "Spec" from the
+// current directory and all subdirectories
+const testsContext = require.context('.', true, /Spec$/)
+testsContext.keys().forEach(function (path) {
+  try {
+    testsContext(path)
+  } catch (err) {
+    console.error('[ERROR] WITH SPEC FILE: ', path)
+    console.error(err)
+  }
+})

test/mocha.opts

@@ -0,0 +1 @@
+test/*Spec.js

webpack.config.js

@@ -0,0 +1,27 @@
+const webpack = require('webpack')
+const path = require('path')
+const UglifyJsPlugin = webpack.optimize.UglifyJsPlugin
+
+module.exports = {
+  devtool: 'inline-source-map',
+  entry: ['babel-polyfill', './index.js'],
+  output: {
+    path: path.join(__dirname, 'dist'),
+    filename: 'index.js',
+    library: 'FiveBellsCondition',
+    libraryTarget: 'umd',
+    umdNamedDefine: true
+  },
+  module: {
+    loaders: [
+      { test: /\.js$/, exclude: /node_modules/, loader: 'babel' },
+      { test: /\.json$/, loader: 'json-loader' }
+    ]
+  },
+  node: {
+    fs: 'empty'
+  },
+  plugins: [
+    new UglifyJsPlugin()
+  ]
+}