diff --git a/package-lock.json b/package-lock.json
index 646b0ed97..153c75778 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -16,6 +16,7 @@
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         "@rollup/plugin-node-resolve": "^13.1.3",
         "chai": "4.3.6",
+        "chokidar-cli": "^3.0.0",
         "gh-release": "^6.0.1",
         "highlight.js": "^11.4.0",
         "http-server": "^14.1.0",
@@ -37,8 +38,7 @@
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         "snazzy": "^9.0.0",
-        "uglify-js": "^3.15.1",
-        "watch": "^1.0.2"
+        "uglify-js": "^3.15.1"
       },
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         "leaflet": "^1.0.0"
@@ -1442,6 +1442,15 @@
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+      "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-5.3.1.tgz",
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+      "dev": true,
+      "engines": {
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@@ -1541,6 +1550,108 @@
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+    "node_modules/chokidar-cli": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/chokidar-cli/-/chokidar-cli-3.0.0.tgz",
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+        "lodash.debounce": "^4.0.8",
+        "lodash.throttle": "^4.1.1",
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+      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-4.1.0.tgz",
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+      "dev": true,
+      "engines": {
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+      "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-7.0.3.tgz",
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+      "dev": true
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+      "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-2.0.0.tgz",
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+      "dev": true,
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+      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-5.2.0.tgz",
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+      },
+      "engines": {
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+      }
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+    "node_modules/chokidar-cli/node_modules/y18n": {
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/y18n/-/y18n-4.0.3.tgz",
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+      "dev": true
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+    "node_modules/chokidar-cli/node_modules/yargs": {
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+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-13.3.2.tgz",
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+      "dev": true,
+      "dependencies": {
+        "cliui": "^5.0.0",
+        "find-up": "^3.0.0",
+        "get-caller-file": "^2.0.1",
+        "require-directory": "^2.1.1",
+        "require-main-filename": "^2.0.0",
+        "set-blocking": "^2.0.0",
+        "string-width": "^3.0.0",
+        "which-module": "^2.0.0",
+        "y18n": "^4.0.0",
+        "yargs-parser": "^13.1.2"
+      }
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+    "node_modules/chokidar-cli/node_modules/yargs-parser": {
+      "version": "13.1.2",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-13.1.2.tgz",
+      "integrity": "sha512-3lbsNRf/j+A4QuSZfDRA7HRSfWrzO0YjqTJd5kjAq37Zep1CEgaYmrH9Q3GwPiB9cHyd1Y1UwggGhJGoxipbzg==",
+      "dev": true,
+      "dependencies": {
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+        "decamelize": "^1.2.0"
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       "resolved": "https://registry.npmjs.org/ci-info/-/ci-info-2.0.0.tgz",
@@ -1592,6 +1703,93 @@
         "node": ">= 10"
       }
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+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/cliui/-/cliui-5.0.0.tgz",
+      "integrity": "sha512-PYeGSEmmHM6zvoef2w8TPzlrnNpXIjTipYK780YswmIP9vjxmd6Y2a3CB2Ks6/AU8NHjZugXvo8w3oWM2qnwXA==",
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+        "strip-ansi": "^5.2.0",
+        "wrap-ansi": "^5.1.0"
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+    "node_modules/cliui/node_modules/ansi-regex": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-4.1.0.tgz",
+      "integrity": "sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg==",
+      "dev": true,
+      "engines": {
+        "node": ">=6"
+      }
+    },
+    "node_modules/cliui/node_modules/ansi-styles": {
+      "version": "3.2.1",
+      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
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+      "version": "7.0.3",
+      "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-7.0.3.tgz",
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+      "dev": true
+    },
+    "node_modules/cliui/node_modules/is-fullwidth-code-point": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-2.0.0.tgz",
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+      "dev": true,
+      "engines": {
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+        "strip-ansi": "^5.1.0"
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+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-5.2.0.tgz",
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+      },
+      "engines": {
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+      }
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+    "node_modules/cliui/node_modules/wrap-ansi": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-5.1.0.tgz",
+      "integrity": "sha512-QC1/iN/2/RPVJ5jYK8BGttj5z83LmSKmvbvrXPNCLZSEb32KKVDJDl/MOt2N01qU2H/FkzEa9PKto1BqDjtd7Q==",
+      "dev": true,
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+        "string-width": "^3.0.0",
+        "strip-ansi": "^5.0.0"
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     "node_modules/clone": {
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       "resolved": "https://registry.npmjs.org/clone/-/clone-1.0.4.tgz",
@@ -1860,6 +2058,15 @@
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+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/decamelize/-/decamelize-1.2.0.tgz",
+      "integrity": "sha1-9lNNFRSCabIDUue+4m9QH5oZEpA=",
+      "dev": true,
+      "engines": {
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@@ -4872,12 +5070,24 @@
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+    "node_modules/lodash.debounce": {
+      "version": "4.0.8",
+      "resolved": "https://registry.npmjs.org/lodash.debounce/-/lodash.debounce-4.0.8.tgz",
+      "integrity": "sha1-gteb/zCmfEAF/9XiUVMArZyk168=",
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       "integrity": "sha1-LRd/ZS+jHpObRDjVNBSZ36OCXpk=",
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+    "node_modules/lodash.throttle": {
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/lodash.throttle/-/lodash.throttle-4.1.1.tgz",
+      "integrity": "sha1-wj6RtxAkKscMN/HhzaknTMOb8vQ=",
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@@ -5045,12 +5255,6 @@
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@@ -6674,6 +6878,12 @@
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@@ -6935,6 +7145,12 @@
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+      "integrity": "sha1-BF+XgtARrppoA93TgrJDkrPYkPc=",
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@@ -8135,6 +8335,12 @@
         "url": "https://github.com/sponsors/ljharb"
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+      "integrity": "sha1-2e8H3Od7mQK4o6j6SzHD4/fm6Ho=",
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@@ -9552,6 +9764,92 @@
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+          "dev": true
+        },
+        "yargs": {
+          "version": "13.3.2",
+          "resolved": "https://registry.npmjs.org/yargs/-/yargs-13.3.2.tgz",
+          "integrity": "sha512-AX3Zw5iPruN5ie6xGRIDgqkT+ZhnRlZMLMHAs8tg7nRruy2Nb+i5o9bwghAogtM08q1dpr2LVoS8KSTMYpWXUw==",
+          "dev": true,
+          "requires": {
+            "cliui": "^5.0.0",
+            "find-up": "^3.0.0",
+            "get-caller-file": "^2.0.1",
+            "require-directory": "^2.1.1",
+            "require-main-filename": "^2.0.0",
+            "set-blocking": "^2.0.0",
+            "string-width": "^3.0.0",
+            "which-module": "^2.0.0",
+            "y18n": "^4.0.0",
+            "yargs-parser": "^13.1.2"
+          }
+        },
+        "yargs-parser": {
+          "version": "13.1.2",
+          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-13.1.2.tgz",
+          "integrity": "sha512-3lbsNRf/j+A4QuSZfDRA7HRSfWrzO0YjqTJd5kjAq37Zep1CEgaYmrH9Q3GwPiB9cHyd1Y1UwggGhJGoxipbzg==",
+          "dev": true,
+          "requires": {
+            "camelcase": "^5.0.0",
+            "decamelize": "^1.2.0"
+          }
+        }
+      }
+    },
     "ci-info": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/ci-info/-/ci-info-2.0.0.tgz",
@@ -9585,6 +9883,77 @@
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       "dev": true
     },
+    "cliui": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/cliui/-/cliui-5.0.0.tgz",
+      "integrity": "sha512-PYeGSEmmHM6zvoef2w8TPzlrnNpXIjTipYK780YswmIP9vjxmd6Y2a3CB2Ks6/AU8NHjZugXvo8w3oWM2qnwXA==",
+      "dev": true,
+      "requires": {
+        "string-width": "^3.1.0",
+        "strip-ansi": "^5.2.0",
+        "wrap-ansi": "^5.1.0"
+      },
+      "dependencies": {
+        "ansi-regex": {
+          "version": "4.1.0",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-4.1.0.tgz",
+          "integrity": "sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg==",
+          "dev": true
+        },
+        "ansi-styles": {
+          "version": "3.2.1",
+          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
+          "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
+          "dev": true,
+          "requires": {
+            "color-convert": "^1.9.0"
+          }
+        },
+        "emoji-regex": {
+          "version": "7.0.3",
+          "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-7.0.3.tgz",
+          "integrity": "sha512-CwBLREIQ7LvYFB0WyRvwhq5N5qPhc6PMjD6bYggFlI5YyDgl+0vxq5VHbMOFqLg7hfWzmu8T5Z1QofhmTIhItA==",
+          "dev": true
+        },
+        "is-fullwidth-code-point": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-2.0.0.tgz",
+          "integrity": "sha1-o7MKXE8ZkYMWeqq5O+764937ZU8=",
+          "dev": true
+        },
+        "string-width": {
+          "version": "3.1.0",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-3.1.0.tgz",
+          "integrity": "sha512-vafcv6KjVZKSgz06oM/H6GDBrAtz8vdhQakGjFIvNrHA6y3HCF1CInLy+QLq8dTJPQ1b+KDUqDFctkdRW44e1w==",
+          "dev": true,
+          "requires": {
+            "emoji-regex": "^7.0.1",
+            "is-fullwidth-code-point": "^2.0.0",
+            "strip-ansi": "^5.1.0"
+          }
+        },
+        "strip-ansi": {
+          "version": "5.2.0",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-5.2.0.tgz",
+          "integrity": "sha512-DuRs1gKbBqsMKIZlrffwlug8MHkcnpjs5VPmL1PAh+mA30U0DTotfDZ0d2UUsXpPmPmMMJ6W773MaA3J+lbiWA==",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "^4.1.0"
+          }
+        },
+        "wrap-ansi": {
+          "version": "5.1.0",
+          "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-5.1.0.tgz",
+          "integrity": "sha512-QC1/iN/2/RPVJ5jYK8BGttj5z83LmSKmvbvrXPNCLZSEb32KKVDJDl/MOt2N01qU2H/FkzEa9PKto1BqDjtd7Q==",
+          "dev": true,
+          "requires": {
+            "ansi-styles": "^3.2.0",
+            "string-width": "^3.0.0",
+            "strip-ansi": "^5.0.0"
+          }
+        }
+      }
+    },
     "clone": {
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/clone/-/clone-1.0.4.tgz",
@@ -9809,6 +10178,12 @@
       "integrity": "sha1-IwdjLUwEOCuN+KMvcLiVBG1SdF8=",
       "dev": true
     },
+    "decamelize": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/decamelize/-/decamelize-1.2.0.tgz",
+      "integrity": "sha1-9lNNFRSCabIDUue+4m9QH5oZEpA=",
+      "dev": true
+    },
     "decompress-response": {
       "version": "6.0.0",
       "resolved": "https://registry.npmjs.org/decompress-response/-/decompress-response-6.0.0.tgz",
@@ -10686,15 +11061,6 @@
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       "dev": true
     },
-    "exec-sh": {
-      "version": "0.2.2",
-      "resolved": "https://registry.npmjs.org/exec-sh/-/exec-sh-0.2.2.tgz",
-      "integrity": "sha512-FIUCJz1RbuS0FKTdaAafAByGS0CPvU3R0MeHxgtl+djzCc//F8HakL8GzmVNZanasTbTAY/3DRFA0KpVqj/eAw==",
-      "dev": true,
-      "requires": {
-        "merge": "^1.2.0"
-      }
-    },
     "extend": {
       "version": "3.0.2",
       "resolved": "https://registry.npmjs.org/extend/-/extend-3.0.2.tgz",
@@ -12106,12 +12472,24 @@
       "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==",
       "dev": true
     },
+    "lodash.debounce": {
+      "version": "4.0.8",
+      "resolved": "https://registry.npmjs.org/lodash.debounce/-/lodash.debounce-4.0.8.tgz",
+      "integrity": "sha1-gteb/zCmfEAF/9XiUVMArZyk168=",
+      "dev": true
+    },
     "lodash.get": {
       "version": "4.4.2",
       "resolved": "https://registry.npmjs.org/lodash.get/-/lodash.get-4.4.2.tgz",
       "integrity": "sha1-LRd/ZS+jHpObRDjVNBSZ36OCXpk=",
       "dev": true
     },
+    "lodash.throttle": {
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/lodash.throttle/-/lodash.throttle-4.1.1.tgz",
+      "integrity": "sha1-wj6RtxAkKscMN/HhzaknTMOb8vQ=",
+      "dev": true
+    },
     "log-symbols": {
       "version": "2.2.0",
       "resolved": "https://registry.npmjs.org/log-symbols/-/log-symbols-2.2.0.tgz",
@@ -12238,12 +12616,6 @@
       "integrity": "sha1-htcJCzDORV1j+64S3aUaR93K+bI=",
       "dev": true
     },
-    "merge": {
-      "version": "1.2.1",
-      "resolved": "https://registry.npmjs.org/merge/-/merge-1.2.1.tgz",
-      "integrity": "sha512-VjFo4P5Whtj4vsLzsYBu5ayHhoHJ0UqNm7ibvShmbmoz7tGi0vXaoJbGdB+GmDMLUdg8DpQXEIeVDAe8MaABvQ==",
-      "dev": true
-    },
     "merge-stream": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/merge-stream/-/merge-stream-2.0.0.tgz",
@@ -13463,6 +13835,12 @@
       "integrity": "sha1-jGStX9MNqxyXbiNE/+f3kqam30I=",
       "dev": true
     },
+    "require-main-filename": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/require-main-filename/-/require-main-filename-2.0.0.tgz",
+      "integrity": "sha512-NKN5kMDylKuldxYLSUfrbo5Tuzh4hd+2E8NPPX02mZtn1VuREQToYe/ZdlJy+J3uCpfaiGF05e7B8W0iXbQHmg==",
+      "dev": true
+    },
     "requires-port": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/requires-port/-/requires-port-1.0.0.tgz",
@@ -13654,6 +14032,12 @@
         "randombytes": "^2.1.0"
       }
     },
+    "set-blocking": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/set-blocking/-/set-blocking-2.0.0.tgz",
+      "integrity": "sha1-BF+XgtARrppoA93TgrJDkrPYkPc=",
+      "dev": true
+    },
     "setprototypeof": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.1.1.tgz",
@@ -14487,16 +14871,6 @@
       "integrity": "sha1-wGavtYK7HLQSjWDqkjkulNXp2+w=",
       "dev": true
     },
-    "watch": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/watch/-/watch-1.0.2.tgz",
-      "integrity": "sha1-NApxe952Vyb6CqB9ch4BR6VR3ww=",
-      "dev": true,
-      "requires": {
-        "exec-sh": "^0.2.0",
-        "minimist": "^1.2.0"
-      }
-    },
     "wcwidth": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/wcwidth/-/wcwidth-1.0.1.tgz",
@@ -14564,6 +14938,12 @@
         "is-symbol": "^1.0.3"
       }
     },
+    "which-module": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/which-module/-/which-module-2.0.0.tgz",
+      "integrity": "sha1-2e8H3Od7mQK4o6j6SzHD4/fm6Ho=",
+      "dev": true
+    },
     "wide-align": {
       "version": "1.1.5",
       "resolved": "https://registry.npmjs.org/wide-align/-/wide-align-1.1.5.tgz",
diff --git a/package.json b/package.json
index 2ce1f2542..14c87ca82 100644
--- a/package.json
+++ b/package.json
@@ -20,6 +20,7 @@
     "@rollup/plugin-json": "^4.1.0",
     "@rollup/plugin-node-resolve": "^13.1.3",
     "chai": "4.3.6",
+    "chokidar-cli": "^3.0.0",
     "gh-release": "^6.0.1",
     "highlight.js": "^11.4.0",
     "http-server": "^14.1.0",
@@ -41,8 +42,7 @@
     "sinon": "^13.0.1",
     "sinon-chai": "3.7.0",
     "snazzy": "^9.0.0",
-    "uglify-js": "^3.15.1",
-    "watch": "^1.0.2"
+    "uglify-js": "^3.15.1"
   },
   "files": [
     "src/**/*.js",
@@ -86,7 +86,7 @@
     "precommit": "npm run lint",
     "fix": "semistandard --fix",
     "release": "./scripts/release.sh",
-    "start-watch": "watch \"npm run build\" src",
+    "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",
@@ -103,4 +103,4 @@
     ]
   },
   "unpkg": "dist/esri-leaflet-debug.js"
-}
+}
\ No newline at end of file