chore(node): add karma launchers for Edge, IE, and Safari

DEVELOPERS.md

@@ -119,17 +119,14 @@ tests once on Chrome run:
 yarn grunt test:unit
 ```
 
-To run the tests on other browsers (Chrome and Firefox are pre-configured) use:
+To run the tests on other browsers use the command line flag:
 
 ```shell
 yarn grunt test:unit --browsers=Chrome,Firefox
 ```
 
 **Note:** there should be _no spaces between browsers_. `Chrome, Firefox` is INVALID.
 
-If you want to test locally on Safari, Internet Explorer, or Edge, you must install 
-the respective `karma-<browser>-launcher` from npm.
-
 If you have a Saucelabs or Browserstack account, you can also run the unit tests on these services
 via our pre-defined customLaunchers. See the [karma config file](/karma-shared.conf.js) for all pre-configured browsers.
 

package.json

@@ -65,9 +65,12 @@
     "karma": "^2.0.0",
     "karma-browserstack-launcher": "^1.2.0",
     "karma-chrome-launcher": "^2.1.1",
+    "karma-edge-launcher": "^0.4.2",
     "karma-firefox-launcher": "^1.0.1",
+    "karma-ie-launcher": "^1.0.0",
     "karma-jasmine": "^1.1.0",
     "karma-junit-reporter": "^1.2.0",
+    "karma-safari-launcher": "^1.0.0",
     "karma-sauce-launcher": "^1.2.0",
     "karma-script-launcher": "^1.0.0",
     "karma-spec-reporter": "^0.0.31",

yarn.lock

@@ -1816,6 +1816,10 @@ ecc-jsbn@~0.1.1:
   dependencies:
     jsbn "~0.1.0"
 
+edge-launcher@1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/edge-launcher/-/edge-launcher-1.2.2.tgz#eb40aafbd067a6ea76efffab0647bcd5509b37b2"
+
 ee-first@1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/ee-first/-/ee-first-1.1.1.tgz#590c61156b0ae2f4f0255732a158b266bc56b21d"
@@ -3793,10 +3797,22 @@ karma-chrome-launcher@^2.1.1:
     fs-access "^1.0.0"
     which "^1.2.1"
 
+karma-edge-launcher@^0.4.2:
+  version "0.4.2"
+  resolved "https://registry.yarnpkg.com/karma-edge-launcher/-/karma-edge-launcher-0.4.2.tgz#3d9529b09b13c909c5f3ceee12d00e7f9a989b3d"
+  dependencies:
+    edge-launcher "1.2.2"
+
 karma-firefox-launcher@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/karma-firefox-launcher/-/karma-firefox-launcher-1.0.1.tgz#ce58f47c2013a88156d55a5d61337c099cf5bb51"
 
+karma-ie-launcher@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/karma-ie-launcher/-/karma-ie-launcher-1.0.0.tgz#497986842c490190346cd89f5494ca9830c6d59c"
+  dependencies:
+    lodash "^4.6.1"
+
 karma-jasmine@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/karma-jasmine/-/karma-jasmine-1.1.0.tgz#22e4c06bf9a182e5294d1f705e3733811b810acf"
@@ -3808,6 +3824,10 @@ karma-junit-reporter@^1.2.0:
     path-is-absolute "^1.0.0"
     xmlbuilder "8.2.2"
 
+karma-safari-launcher@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/karma-safari-launcher/-/karma-safari-launcher-1.0.0.tgz#96982a2cc47d066aae71c553babb28319115a2ce"
+
 karma-sauce-launcher@^1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/karma-sauce-launcher/-/karma-sauce-launcher-1.2.0.tgz#6f2558ddef3cf56879fa27540c8ae9f8bfd16bca"
@@ -4196,7 +4216,7 @@ lodash@^3.10.1, lodash@~3.10.1:
   version "3.10.1"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-3.10.1.tgz#5bf45e8e49ba4189e17d482789dfd15bd140b7b6"
 
-lodash@^4.15.0, lodash@^4.17.4, lodash@^4.5.0:
+lodash@^4.15.0, lodash@^4.17.4, lodash@^4.5.0, lodash@^4.6.1:
   version "4.17.4"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.4.tgz#78203a4d1c328ae1d86dca6460e369b57f4055ae"