drop support for ie9 and ie19; closes #3148

Makefile

@@ -21,7 +21,6 @@ mocha.js: $(SRC) browser-entry.js
 	@printf "==> [Browser :: build]\n"
 	mkdir -p ${@D}
 	$(BROWSERIFY) ./browser-entry \
-		--require buffer/:buffer \
 		--plugin ./scripts/dedefine \
 		--ignore 'fs' \
 		--ignore 'glob' \

karma.conf.js

@@ -9,8 +9,6 @@ const browserPlatformPairs = {
   'chrome@latest': 'Windows 8',
   'MicrosoftEdge@latest': 'Windows 10',
   'internet explorer@11.0': 'Windows 8.1',
-  'internet explorer@10.0': 'Windows 8',
-  'internet explorer@9.0': 'Windows 7',
   'firefox@latest': 'Windows 10',
   'safari@latest': 'OS X 10.12'
 };
@@ -39,7 +37,7 @@ module.exports = config => {
           .ignore('fs')
           .ignore('path')
           .ignore('supports-color')
-          .require(path.join(__dirname, 'node_modules', 'buffer'), {expose: 'buffer'})
+          // .require(path.join(__dirname, 'node_modules', 'buffer'), {expose: 'buffer'})
           .on('bundled', (err, content) => {
             if (!err && bundleDirpath) {
               // write bundle to directory for debugging

mocha.sublime-project

@@ -0,0 +1,21 @@
+{
+  "folders":
+  [
+    {
+      "file_exclude_patterns":
+      [
+          "package-lock.json",
+          "yarn.lock",
+          "mocha.js"
+      ],
+      "folder_exclude_patterns":
+      [
+          "distribution",
+          "node_modules",
+          ".tmp",
+          ".git"
+      ],
+      "path": "."
+    }
+  ]
+}

mocha.sublime-workspace

@@ -0,0 +1 @@
+{}

package.json

@@ -323,7 +323,6 @@
   "devDependencies": {
     "assert": "^1.4.1",
     "browserify": "^14.4.0",
-    "buffer": "^4.9.1",
     "coffee-script": "^1.10.0",
     "coveralls": "^3.0.0",
     "cross-spawn": "^5.1.0",
@@ -365,8 +364,7 @@
     "fs": false,
     "glob": false,
     "path": false,
-    "supports-color": false,
-    "buffer": "buffer"
+    "supports-color": false
   },
   "homepage": "https://mochajs.org",
   "logo": "https://cldup.com/S9uQ-cOLYz.svg"