switch to rollup to tackle large bundle size

gulpfile.js

@@ -2,12 +2,7 @@
 
 var gulp = require('gulp');
 var jshint = require('gulp-jshint');
-var exec = require('gulp-exec');
 var stylish = require('jshint-stylish');
-var browserify = require('gulp-browserify');
-var uglify = require('gulp-uglify');
-var rename = require('gulp-rename');
-var replace = require('gulp-replace');
 var coveralls = require('gulp-coveralls');
 var istanbul = require('gulp-istanbul');
 var mocha = require('gulp-mocha');
@@ -46,30 +41,6 @@ function lint(src){
     .pipe(jshint.reporter(stylish));
 }
 
-gulp.task('dist', function(){
-  return Promise.all([
-    gulp.src([paths.index])
-      .pipe(browserify({
-        insertGlobals : true,
-        debug: true,
-        standalone: 'objectHash'
-      }))
-      // Hack: See https://github.com/puleos/object-hash/issues/71.
-      // It's probably better to replace gulp-browserify altogether instead.
-      .pipe(replace(/_global.crypto/g, 'false'))
-      .pipe(rename('object_hash.js'))
-      .pipe(uglify())
-      .pipe(gulp.dest('./dist')),
-    gulp.src([paths.tests])
-      // Hack: browserify seems to not support async-await.
-      // It's probably better to replace gulp-browserify altogether instead.
-      .pipe(replace(/async function/g, 'function'))
-      .pipe(browserify())
-      .pipe(rename('object_hash_test.js'))
-      .pipe(gulp.dest('./dist'))
-  ]);
-});
-
 gulp.task('pre-test', function() {
   return preTest([paths.index]);
 });

index.js

@@ -1,6 +1,7 @@
 'use strict';
 
-var crypto = require('crypto');
+var getHashes = require('crypto').getHashes;
+var createHash = require('crypto').createHash;
 
 /**
  * Exported function
@@ -54,7 +55,7 @@ exports.keysMD5 = function(object){
 };
 
 // Internals
-var hashes = crypto.getHashes ? crypto.getHashes().slice() : ['sha1', 'md5'];
+var hashes = getHashes ? getHashes().slice() : ['sha1', 'md5'];
 hashes.push('passthrough');
 var encodings = ['buffer', 'hex', 'binary', 'base64'];
 
@@ -117,7 +118,7 @@ function hash(object, options) {
   var hashingStream;
 
   if (options.algorithm !== 'passthrough') {
-    hashingStream = crypto.createHash(options.algorithm);
+    hashingStream = createHash(options.algorithm);
   } else {
     hashingStream = new PassThrough();
   }

package.json

@@ -17,8 +17,8 @@
     "url": "https://github.com/puleos/object-hash/issues"
   },
   "scripts": {
-    "test": "node ./node_modules/.bin/mocha test",
-    "prepublish": "gulp dist"
+    "test": "gulp test",
+    "prepublish": "rollup -c",
   },
   "author": "Scott Puleo <[email protected]>",
   "files": [
@@ -27,23 +27,19 @@
   ],
   "license": "MIT",
   "devDependencies": {
-    "browserify": "^16.2.3",
     "gulp": "^4.0.0",
-    "gulp-browserify": "^0.5.1",
     "gulp-coveralls": "^0.1.4",
-    "gulp-exec": "^3.0.1",
     "gulp-istanbul": "^1.1.3",
     "gulp-jshint": "^2.0.0",
     "gulp-mocha": "^5.0.0",
-    "gulp-rename": "^1.2.0",
-    "gulp-replace": "^1.0.0",
-    "gulp-uglify": "^3.0.0",
     "jshint": "^2.8.0",
     "jshint-stylish": "^2.1.0",
     "karma": "^4.2.0",
     "karma-chrome-launcher": "^2.2.0",
     "karma-mocha": "^1.3.0",
-    "mocha": "^6.2.0"
+    "mocha": "^6.2.0",
+    "rollup": "^2.6.0",
+    "rollup-plugin-uglify": "^6.0.4"
   },
   "engines": {
     "node": ">= 6"

rollup.config.js

@@ -0,0 +1,11 @@
+import { uglify } from "rollup-plugin-uglify";
+
+export default {
+  input: 'index.js',
+  output: {
+    file: 'dist/object_hash.js',
+    format: 'umd',
+    compact: true,
+  },
+  plugins: [uglify()]
+};