diff --git a/.gitignore b/.gitignore
index bd1919c2a..1e1acfc70 100644
--- a/.gitignore
+++ b/.gitignore
@@ -40,5 +40,3 @@ site/build
 # Built Files
 dist
 
-# so semistandard doesnt lint the folder during CI
-travis_phantomjs
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index c507aac98..000000000
--- a/.travis.yml
+++ /dev/null
@@ -1,15 +0,0 @@
-language: node_js
-sudo: false
-notifications:
-  email: false
-node_js:
-  - node
-cache:
-  directories: # Cache dependencies
-    - node_modules
-before_script:
-  - npm prune
-script:
-  - npm run test:ci
-addons:
-  chrome: stable
\ No newline at end of file
diff --git a/karma.conf.js b/karma.conf.js
index d6fe2a92d..c41acf037 100644
--- a/karma.conf.js
+++ b/karma.conf.js
@@ -1,6 +1,4 @@
 // Karma configuration
-// Generated on Fri May 30 2014 15:44:45 GMT-0400 (EDT)
-
 module.exports = function (config) {
   var configuration = {
 
@@ -39,37 +37,64 @@ module.exports = function (config) {
     // web server port
     port: 9876,
 
-    // enable / disable colors in the output (reporters and logs)
-    colors: true,
-
     // level of logging
     // possible values: config.LOG_DISABLE || config.LOG_ERROR || config.LOG_WARN || config.LOG_INFO || config.LOG_DEBUG
     logLevel: config.LOG_WARN,
 
+    // enable / disable colors in the output (reporters and logs)
+    colors: true,
+
     // enable / disable watching file and executing tests whenever any file changes
-    autoWatch: true,
+    autoWatch: false,
 
     // start these browsers
     // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
-    browsers: [
-      'Chrome'
-      // 'ChromeCanary',
-      // 'Firefox',
-      // 'Safari',
-      // 'PhantomJS'
-    ],
+    browsers: ['Chrome1280x1024'],
 
     customLaunchers: {
-      Chrome_travis_ci: {
+      Chrome1280x1024: {
         base: 'ChromeHeadless',
-        flags: ['--no-sandbox']
+        // increased viewport is required for some tests (TODO fix tests)
+        // https://github.com/Leaflet/Leaflet/issues/7113#issuecomment-619528577
+        flags: ['--window-size=1280,1024']
+      },
+      FirefoxTouch: {
+        base: 'FirefoxHeadless',
+        prefs: {
+          'dom.w3c_touch_events.enabled': 1
+        }
+      },
+      FirefoxNoTouch: {
+        base: 'FirefoxHeadless',
+        prefs: {
+          'dom.w3c_touch_events.enabled': 0
+        }
+      },
+      IE10: {
+        base: 'IE',
+        'x-ua-compatible': 'IE=EmulateIE10'
       }
     },
 
+    concurrency: 1,
+
+    // If browser does not capture in given timeout [ms], kill it
+    captureTimeout: 60000,
+
+    // Timeout for the client socket connection [ms].
+    browserSocketTimeout: 30000,
+
     // Continuous Integration mode
     // if true, Karma captures browsers, runs the tests and exits
     singleRun: true,
 
+    client: {
+      mocha: {
+        // eslint-disable-next-line no-undef
+        forbidOnly: process.env.CI || false
+      }
+    },
+
     // Configure the coverage reporters
     coverageReporter: {
       reporters: [
@@ -83,9 +108,5 @@ module.exports = function (config) {
     }
   };
 
-  if (process.env.TRAVIS) {
-    configuration.browsers = ['Chrome_travis_ci'];
-  }
-
   config.set(configuration);
 };
diff --git a/package-lock.json b/package-lock.json
index 033420f63..081cbc0c5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -21,12 +21,20 @@
         "highlight.js": "^11.4.0",
         "http-server": "^14.1.0",
         "husky": "^1.1.1",
-        "karma": "^6.3.16",
+        "karma": "^6.3.18",
         "karma-chai-sinon": "^0.1.5",
-        "karma-chrome-launcher": "^3.1.0",
+        "karma-chrome-launcher": "^3.1.1",
         "karma-coverage": "^2.2.0",
+        "karma-edge-launcher": "^0.4.2",
+        "karma-expect": "^1.1.3",
+        "karma-firefox-launcher": "^2.1.2",
+        "karma-ie-launcher": "^1.0.0",
         "karma-mocha": "^2.0.1",
         "karma-mocha-reporter": "^2.2.5",
+        "karma-rollup-preprocessor": "^7.0.8",
+        "karma-safari-launcher": "~1.0.0",
+        "karma-sinon": "^1.0.5",
+        "karma-sinon-chai": "^2.0.2",
         "karma-sourcemap-loader": "^0.3.8",
         "leaflet": "^1.6.0",
         "mkdirp": "^1.0.4",
@@ -449,6 +457,15 @@
         "node": ">=6.9.0"
       }
     },
+    "node_modules/@colors/colors": {
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/@colors/colors/-/colors-1.5.0.tgz",
+      "integrity": "sha512-ooWCrlZP11i8GImSjTHYHLkvFDP48nS4+204nGb1RiX/WXYHmJA2III9/e2DWVabCESdW7hBAEzHRqUn9OUVvQ==",
+      "dev": true,
+      "engines": {
+        "node": ">=0.1.90"
+      }
+    },
     "node_modules/@istanbuljs/schema": {
       "version": "0.1.3",
       "resolved": "https://registry.npmjs.org/@istanbuljs/schema/-/schema-0.1.3.tgz",
@@ -1069,9 +1086,9 @@
       }
     },
     "node_modules/async": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/async/-/async-3.2.0.tgz",
-      "integrity": "sha512-TR2mEZFVOj2pLStYxLht7TyfuRzaydfpxr3k9RpHIzMgw7A64dzsdqCxH1WJyQdoe8T10nDXd9wnEigmiuHIZw==",
+      "version": "3.2.4",
+      "resolved": "https://registry.npmjs.org/async/-/async-3.2.4.tgz",
+      "integrity": "sha512-iAB+JbDEGXhyIUavoDl9WP/Jj106Kz9DEn1DPgYw5ruDn0e3Wgi3sKFm55sASdGBNOQB8F59d9qQ7deqrHA8wQ==",
       "dev": true
     },
     "node_modules/balanced-match": {
@@ -1841,15 +1858,6 @@
         "color-support": "bin.js"
       }
     },
-    "node_modules/colors": {
-      "version": "1.4.0",
-      "resolved": "https://registry.npmjs.org/colors/-/colors-1.4.0.tgz",
-      "integrity": "sha512-a+UqTh4kgZg/SlGvfbzDHpgRu7AAQOmmqRHJnxhRZICKFUT91brVhNNt58CMWU9PsBbv3PDCZUHbVxuDiH2mtA==",
-      "dev": true,
-      "engines": {
-        "node": ">=0.1.90"
-      }
-    },
     "node_modules/commander": {
       "version": "2.20.3",
       "resolved": "https://registry.npmjs.org/commander/-/commander-2.20.3.tgz",
@@ -1918,7 +1926,7 @@
     "node_modules/console-control-strings": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/console-control-strings/-/console-control-strings-1.1.0.tgz",
-      "integrity": "sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4=",
+      "integrity": "sha512-ty/fTekppD2fIwRvnZAVdeOiGd1c7YXEixbgJTNzqcxJWKQnjJ/V1bNEEE6hygpM3WjwHFUVK6HTjWSzV4a8sQ==",
       "dev": true
     },
     "node_modules/contains-path": {
@@ -2040,6 +2048,12 @@
         "node": ">=4.0"
       }
     },
+    "node_modules/debounce": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/debounce/-/debounce-1.2.1.tgz",
+      "integrity": "sha512-XRRe6Glud4rd/ZGQfiV1ruXSfbvfJedlV9Y6zOlP+2K04vBYiJEte6stfFkCP03aMnY5tsipamumUjL14fofug==",
+      "dev": true
+    },
     "node_modules/debug": {
       "version": "3.2.7",
       "resolved": "https://registry.npmjs.org/debug/-/debug-3.2.7.tgz",
@@ -2275,6 +2289,12 @@
         "node": ">= 6"
       }
     },
+    "node_modules/edge-launcher": {
+      "version": "1.2.2",
+      "resolved": "https://registry.npmjs.org/edge-launcher/-/edge-launcher-1.2.2.tgz",
+      "integrity": "sha512-JcD5WBi3BHZXXVSSeEhl6sYO8g5cuynk/hifBzds2Bp4JdzCGLNMHgMCKu5DvrO1yatMgF0goFsxXRGus0yh1g==",
+      "dev": true
+    },
     "node_modules/ee-first": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/ee-first/-/ee-first-1.1.1.tgz",
@@ -3216,6 +3236,12 @@
       "integrity": "sha512-rlaVLnVxtxvoyLsQQFBx53YmXHDxRIzzTLbdfxqi4yocpSjAxXwkU0cScM5JgSKMqEhrZpnvQ2D9gjylR0AimQ==",
       "dev": true
     },
+    "node_modules/expect.js": {
+      "version": "0.3.1",
+      "resolved": "https://registry.npmjs.org/expect.js/-/expect.js-0.3.1.tgz",
+      "integrity": "sha512-okDF/FAPEul1ZFLae4hrgpIqAeapoo5TRdcg/lD0iN9S3GWrBFIJwNezGH1DMtIz+RxU4RrFmMq7WUUvDg3J6A==",
+      "dev": true
+    },
     "node_modules/extend": {
       "version": "3.0.2",
       "resolved": "https://registry.npmjs.org/extend/-/extend-3.0.2.tgz",
@@ -3458,23 +3484,22 @@
       "dev": true
     },
     "node_modules/gauge": {
-      "version": "3.0.2",
-      "resolved": "https://registry.npmjs.org/gauge/-/gauge-3.0.2.tgz",
-      "integrity": "sha512-+5J6MS/5XksCuXq++uFRsnUd7Ovu1XenbeuIuNRJxYWjgQbPuFhT14lAvsWfqfAmnwluf1OwMjz39HjfLPci0Q==",
+      "version": "4.0.4",
+      "resolved": "https://registry.npmjs.org/gauge/-/gauge-4.0.4.tgz",
+      "integrity": "sha512-f9m+BEN5jkg6a0fZjleidjN51VE1X+mPFQ2DJ0uv1V39oCLCbsGe6yjbBnp7eK7z/+GAon99a3nHuqbuuthyPg==",
       "dev": true,
       "dependencies": {
         "aproba": "^1.0.3 || ^2.0.0",
-        "color-support": "^1.1.2",
-        "console-control-strings": "^1.0.0",
+        "color-support": "^1.1.3",
+        "console-control-strings": "^1.1.0",
         "has-unicode": "^2.0.1",
-        "object-assign": "^4.1.1",
-        "signal-exit": "^3.0.0",
+        "signal-exit": "^3.0.7",
         "string-width": "^4.2.3",
         "strip-ansi": "^6.0.1",
-        "wide-align": "^1.1.2"
+        "wide-align": "^1.1.5"
       },
       "engines": {
-        "node": ">=10"
+        "node": "^12.13.0 || ^14.15.0 || >=16.0.0"
       }
     },
     "node_modules/gensync": {
@@ -3556,16 +3581,15 @@
       }
     },
     "node_modules/gh-release": {
-      "version": "6.0.1",
-      "resolved": "https://registry.npmjs.org/gh-release/-/gh-release-6.0.1.tgz",
-      "integrity": "sha512-irUYo1j7GjXzE8xsUyIvFX8SA7vNwO0pywd1a0NqkLHMh3595yurPEwnuj7SrkDOyqGu5lU9F50/7G3c6PHhmw==",
+      "version": "6.0.4",
+      "resolved": "https://registry.npmjs.org/gh-release/-/gh-release-6.0.4.tgz",
+      "integrity": "sha512-6djoVxTUpbw9GZ/mveNjp5j/IDPY3KACscSlmNwwfkR+EQCNTSgGRywb0TRaQdA36RnwtcNOWEaLwB5ez7jSRg==",
       "dev": true,
       "dependencies": {
         "@octokit/rest": "^18.0.9",
-        "chalk": "^4.1.0",
         "changelog-parser": "^2.0.0",
         "deep-extend": "^0.6.0",
-        "gauge": "^v3.0.1",
+        "gauge": "^v4.0.4",
         "gh-release-assets": "^2.0.0",
         "ghauth": "^5.0.0",
         "github-url-to-object": "^4.0.4",
@@ -3578,7 +3602,7 @@
         "gh-release": "bin/cli.js"
       },
       "engines": {
-        "node": ">=10.0.0"
+        "node": ">=12"
       }
     },
     "node_modules/gh-release-assets": {
@@ -3802,7 +3826,7 @@
     "node_modules/has-unicode": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/has-unicode/-/has-unicode-2.0.1.tgz",
-      "integrity": "sha1-4Ob+aijPUROIVeCG0Wkedx3iqLk=",
+      "integrity": "sha512-8Rf9Y83NBReMnx0gFzA8JImQACstCYWUplepDa9xprwwtmgEZUF0h/i5xSA625zB/I37EtrswSST6OXxwaaIJQ==",
       "dev": true
     },
     "node_modules/has-yarn": {
@@ -4255,6 +4279,21 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/is-docker": {
+      "version": "2.2.1",
+      "resolved": "https://registry.npmjs.org/is-docker/-/is-docker-2.2.1.tgz",
+      "integrity": "sha512-F+i2BKsFrH66iaUFc0woD8sLy8getkwTwtOBjvs56Cx4CgJDeKQeqfz8wAYiSb8JOprWhHH5p77PbmYCvvUuXQ==",
+      "dev": true,
+      "bin": {
+        "is-docker": "cli.js"
+      },
+      "engines": {
+        "node": ">=8"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
     "node_modules/is-extglob": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/is-extglob/-/is-extglob-2.1.1.tgz",
@@ -4500,6 +4539,18 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/is-wsl": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/is-wsl/-/is-wsl-2.2.0.tgz",
+      "integrity": "sha512-fKzAra0rGJUUBwGBgNkHZuToZcn+TtXHpeCgmkMJMMYx1sQDYaCSyjJBSCa2nH1DGm7s3n1oBnohoVTBaN7Lww==",
+      "dev": true,
+      "dependencies": {
+        "is-docker": "^2.0.0"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/is-yarn-global": {
       "version": "0.3.0",
       "resolved": "https://registry.npmjs.org/is-yarn-global/-/is-yarn-global-0.3.0.tgz",
@@ -4744,15 +4795,15 @@
       "dev": true
     },
     "node_modules/karma": {
-      "version": "6.3.16",
-      "resolved": "https://registry.npmjs.org/karma/-/karma-6.3.16.tgz",
-      "integrity": "sha512-nEU50jLvDe5yvXqkEJRf8IuvddUkOY2x5Xc4WXHz6dxINgGDrgD2uqQWeVrJs4hbfNaotn+HQ1LZJ4yOXrL7xQ==",
+      "version": "6.4.0",
+      "resolved": "https://registry.npmjs.org/karma/-/karma-6.4.0.tgz",
+      "integrity": "sha512-s8m7z0IF5g/bS5ONT7wsOavhW4i4aFkzD4u4wgzAQWT4HGUeWI3i21cK2Yz6jndMAeHETp5XuNsRoyGJZXVd4w==",
       "dev": true,
       "dependencies": {
+        "@colors/colors": "1.5.0",
         "body-parser": "^1.19.0",
         "braces": "^3.0.2",
         "chokidar": "^3.5.1",
-        "colors": "1.4.0",
         "connect": "^3.7.0",
         "di": "^0.0.1",
         "dom-serialize": "^2.2.1",
@@ -4768,7 +4819,7 @@
         "qjobs": "^1.2.0",
         "range-parser": "^1.2.1",
         "rimraf": "^3.0.2",
-        "socket.io": "^4.2.0",
+        "socket.io": "^4.4.1",
         "source-map": "^0.6.1",
         "tmp": "^0.2.1",
         "ua-parser-js": "^0.7.30",
@@ -4797,9 +4848,9 @@
       }
     },
     "node_modules/karma-chrome-launcher": {
-      "version": "3.1.0",
-      "resolved": "https://registry.npmjs.org/karma-chrome-launcher/-/karma-chrome-launcher-3.1.0.tgz",
-      "integrity": "sha512-3dPs/n7vgz1rxxtynpzZTvb9y/GIaW8xjAwcIGttLbycqoFtI7yo1NGnQi6oFTherRE+GIhCAHZC4vEqWGhNvg==",
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/karma-chrome-launcher/-/karma-chrome-launcher-3.1.1.tgz",
+      "integrity": "sha512-hsIglcq1vtboGPAN+DGCISCFOxW+ZVnIqhDQcCMqqCp+4dmJ0Qpq5QAjkbA0X2L9Mi6OBkHi2Srrbmm7pUKkzQ==",
       "dev": true,
       "dependencies": {
         "which": "^1.2.1"
@@ -4822,6 +4873,67 @@
         "node": ">=10.0.0"
       }
     },
+    "node_modules/karma-edge-launcher": {
+      "version": "0.4.2",
+      "resolved": "https://registry.npmjs.org/karma-edge-launcher/-/karma-edge-launcher-0.4.2.tgz",
+      "integrity": "sha512-YAJZb1fmRcxNhMIWYsjLuxwODBjh2cSHgTW/jkVmdpGguJjLbs9ZgIK/tEJsMQcBLUkO+yO4LBbqYxqgGW2HIw==",
+      "dev": true,
+      "dependencies": {
+        "edge-launcher": "1.2.2"
+      },
+      "engines": {
+        "node": ">=4"
+      },
+      "peerDependencies": {
+        "karma": ">=0.9"
+      }
+    },
+    "node_modules/karma-expect": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/karma-expect/-/karma-expect-1.1.3.tgz",
+      "integrity": "sha512-a4MvikmSLA+G4ikJY6VVGGX2Pmc8eLL+QUXftR7dGMcIt5+qCIotSj7XWifDI5IQVHDnouZgqnQIjZAiFK8oVg==",
+      "dev": true,
+      "dependencies": {
+        "expect.js": "^0.3.1"
+      }
+    },
+    "node_modules/karma-firefox-launcher": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/karma-firefox-launcher/-/karma-firefox-launcher-2.1.2.tgz",
+      "integrity": "sha512-VV9xDQU1QIboTrjtGVD4NCfzIH7n01ZXqy/qpBhnOeGVOkG5JYPEm8kuSd7psHE6WouZaQ9Ool92g8LFweSNMA==",
+      "dev": true,
+      "dependencies": {
+        "is-wsl": "^2.2.0",
+        "which": "^2.0.1"
+      }
+    },
+    "node_modules/karma-firefox-launcher/node_modules/which": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz",
+      "integrity": "sha512-BLI3Tl1TW3Pvl70l3yq3Y64i+awpwXqsGBYWkkqMtnbXgrMD+yj7rhW0kuEDxzJaYXGjEW5ogapKNMEKNMjibA==",
+      "dev": true,
+      "dependencies": {
+        "isexe": "^2.0.0"
+      },
+      "bin": {
+        "node-which": "bin/node-which"
+      },
+      "engines": {
+        "node": ">= 8"
+      }
+    },
+    "node_modules/karma-ie-launcher": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/karma-ie-launcher/-/karma-ie-launcher-1.0.0.tgz",
+      "integrity": "sha512-ts71ke8pHvw6qdRtq0+7VY3ANLoZuUNNkA8abRaWV13QRPNm7TtSOqyszjHUtuwOWKcsSz4tbUtrNICrQC+SXQ==",
+      "dev": true,
+      "dependencies": {
+        "lodash": "^4.6.1"
+      },
+      "peerDependencies": {
+        "karma": ">=0.9"
+      }
+    },
     "node_modules/karma-mocha": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/karma-mocha/-/karma-mocha-2.0.1.tgz",
@@ -4904,6 +5016,55 @@
         "node": ">=4"
       }
     },
+    "node_modules/karma-rollup-preprocessor": {
+      "version": "7.0.8",
+      "resolved": "https://registry.npmjs.org/karma-rollup-preprocessor/-/karma-rollup-preprocessor-7.0.8.tgz",
+      "integrity": "sha512-WiuBCS9qsatJuR17dghiTARBZ7LF+ml+eb7qJXhw7IbsdY0lTWELDRQC/93J9i6636CsAXVBL3VJF4WtaFLZzA==",
+      "dev": true,
+      "dependencies": {
+        "chokidar": "^3.3.1",
+        "debounce": "^1.2.0"
+      },
+      "engines": {
+        "node": ">= 8.0.0"
+      },
+      "peerDependencies": {
+        "rollup": ">= 1.0.0"
+      }
+    },
+    "node_modules/karma-safari-launcher": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/karma-safari-launcher/-/karma-safari-launcher-1.0.0.tgz",
+      "integrity": "sha512-qmypLWd6F2qrDJfAETvXDfxHvKDk+nyIjpH9xIeI3/hENr0U3nuqkxaftq73PfXZ4aOuOChA6SnLW4m4AxfRjQ==",
+      "dev": true,
+      "peerDependencies": {
+        "karma": ">=0.9"
+      }
+    },
+    "node_modules/karma-sinon": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/karma-sinon/-/karma-sinon-1.0.5.tgz",
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+      "version": "1.7.3",
+      "resolved": "https://registry.npmjs.org/shell-quote/-/shell-quote-1.7.3.tgz",
+      "integrity": "sha512-Vpfqwm4EnqGdlsBFNmHhxhElJYrdfcxPThu+ryKS5J8L/fhAwLazFZtq+S+TWZ9ANj2piSQLGj6NQg+lKPmxrw==",
       "dev": true
     },
     "shelljs": {
@@ -14088,9 +14359,9 @@
       }
     },
     "signal-exit": {
-      "version": "3.0.3",
-      "resolved": "https://registry.npmjs.org/signal-exit/-/signal-exit-3.0.3.tgz",
-      "integrity": "sha512-VUJ49FC8U1OxwZLxIbTTrDvLnf/6TDgxZcK8wxR8zs13xpx7xbG60ndBlhNrFi2EMuFRoeDoJO7wthSLq42EjA==",
+      "version": "3.0.7",
+      "resolved": "https://registry.npmjs.org/signal-exit/-/signal-exit-3.0.7.tgz",
+      "integrity": "sha512-wnD2ZE+l+SPC/uoS0vXeE9L1+0wuaMqKlfz9AMUo38JsyLSBWSFcHR1Rri62LZc12vLr1gb3jl7iwQhgwpAbGQ==",
       "dev": true
     },
     "simple-concat": {
diff --git a/package.json b/package.json
index bf5d421d1..50c9c555d 100644
--- a/package.json
+++ b/package.json
@@ -25,12 +25,20 @@
     "highlight.js": "^11.4.0",
     "http-server": "^14.1.0",
     "husky": "^1.1.1",
-    "karma": "^6.3.16",
+    "karma": "^6.3.18",
     "karma-chai-sinon": "^0.1.5",
-    "karma-chrome-launcher": "^3.1.0",
+    "karma-chrome-launcher": "^3.1.1",
     "karma-coverage": "^2.2.0",
+    "karma-edge-launcher": "^0.4.2",
+    "karma-expect": "^1.1.3",
+    "karma-firefox-launcher": "^2.1.2",
+    "karma-ie-launcher": "^1.0.0",
     "karma-mocha": "^2.0.1",
     "karma-mocha-reporter": "^2.2.5",
+    "karma-rollup-preprocessor": "^7.0.8",
+    "karma-safari-launcher": "~1.0.0",
+    "karma-sinon": "^1.0.5",
+    "karma-sinon-chai": "^2.0.2",
     "karma-sourcemap-loader": "^0.3.8",
     "leaflet": "^1.6.0",
     "mkdirp": "^1.0.4",
@@ -89,8 +97,7 @@
     "start-watch": "chokidar src -c \"npm run build\"",
     "start": "run-p start-watch serve",
     "serve": "http-server -p 5000 -c-1 -o",
-    "test": "npm run lint && karma start",
-    "test:ci": "npm run lint && karma start --browsers Chrome_travis_ci"
+    "test": "npm run lint && karma start"
   },
   "semistandard": {
     "globals": [