add passthrough env variable to allow testing of native streams, also…

… adds coverage

.gitignore

@@ -1,2 +1,4 @@
 node_modules/
 .zuul.yml
+.nyc_output
+coverage

build/test-replacements.js

@@ -83,6 +83,7 @@ module.exports['common.js'] = [
 
     // for streams2 on node 0.11
     // and dtrace in 0.10
+    // and coverage in all
   , [
         /^(  for \(var x in global\) \{|function leakedGlobals\(\) \{)$/m
       ,   '  /*<replacement>*/\n'
@@ -92,6 +93,8 @@ module.exports['common.js'] = [
         + '    knownGlobals.push(DTRACE_NET_SOCKET_READ);\n'
         + '  if (typeof DTRACE_NET_SOCKET_WRITE == \'function\')\n'
         + '    knownGlobals.push(DTRACE_NET_SOCKET_WRITE);\n'
+        + '  if (global.__coverage__)\n'
+        + '    knownGlobals.push(__coverage__);\n'
         + '  /*</replacement>*/\n\n$1'
     ]
 

package.json

@@ -6,20 +6,26 @@
   "dependencies": {
     "core-util-is": "~1.0.0",
     "inherits": "~2.0.1",
+    "inline-process-browser": "~2.0.1",
     "isarray": "~1.0.0",
     "process-nextick-args": "~1.0.6",
     "string_decoder": "~0.10.x",
+    "unreachable-branch-transform": "~0.5.0",
     "util-deprecate": "~1.0.1"
   },
   "devDependencies": {
-    "tap": "~0.2.6",
+    "nyc": "^6.4.0",
+    "tap": "~0.7.1",
     "tape": "~4.5.1",
     "zuul": "~3.9.0"
   },
   "scripts": {
     "test": "tap test/parallel/*.js test/ours/*.js",
     "browser": "npm run write-zuul && zuul -- test/browser.js",
-    "write-zuul": "printf \"ui: tape\nbrowsers:\n  - name: $BROWSER_NAME\n    version: $BROWSER_VERSION\n\">.zuul.yml"
+    "write-zuul": "printf \"ui: tape\nbrowsers:\n  - name: $BROWSER_NAME\n    version: $BROWSER_VERSION\n\">.zuul.yml",
+    "local": "zuul --local -- test/browser.js",
+    "cover": "nyc npm test",
+    "report": "nyc report --reporter=lcov"
   },
   "repository": {
     "type": "git",
@@ -33,5 +39,14 @@
   "browser": {
     "util": false
   },
+  "nyc": {
+   "include": ["lib/**.js"]
+ },
+  "browserify": {
+    "transform": [
+      "inline-process-browser",
+      "unreachable-branch-transform"
+    ]
+  },
   "license": "MIT"
 }

readable.js

@@ -10,3 +10,9 @@ exports.Writable = require('./lib/_stream_writable.js');
 exports.Duplex = require('./lib/_stream_duplex.js');
 exports.Transform = require('./lib/_stream_transform.js');
 exports.PassThrough = require('./lib/_stream_passthrough.js');
+
+// inline-process-browser and unreachable-branch-transform make sure this is
+// removed in browserify builds
+if (!process.browser && process.env.READABLE_STREAM === 'disable') {
+  module.exports = require('stream');
+}

test/common.js

@@ -329,6 +329,7 @@ if (global.Symbol) {
 if (typeof constructor == 'function') knownGlobals.push(constructor);
 if (typeof DTRACE_NET_SOCKET_READ == 'function') knownGlobals.push(DTRACE_NET_SOCKET_READ);
 if (typeof DTRACE_NET_SOCKET_WRITE == 'function') knownGlobals.push(DTRACE_NET_SOCKET_WRITE);
+if (global.__coverage__) knownGlobals.push(__coverage__);
 /*</replacement>*/
 
 function leakedGlobals() {