Switch from path polyfill to rollup-plugin-node-builtins

Rollu  doesn't appear to like the path polyfill on npm, since it uses 
Node.js various environment features that Rollup doesn't provide

package-lock.json

@@ -27,6 +27,29 @@
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+    "@joseph184/browserify-fs": {
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+      "resolved": "https://registry.npmjs.org/@joseph184/browserify-fs/-/browserify-fs-1.0.1.tgz",
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+      "dev": true,
+      "requires": {
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+        "level-js": "^4.0.0",
+        "levelup": "^4.0.0"
+      }
+    },
+    "@joseph184/rollup-plugin-node-builtins": {
+      "version": "2.1.4",
+      "resolved": "https://registry.npmjs.org/@joseph184/rollup-plugin-node-builtins/-/rollup-plugin-node-builtins-2.1.4.tgz",
+      "integrity": "sha512-6H9XlZyv0YO1dr7L6qDyzJGOcMC/AGCZRHTbvezC2PUAo1EDU3azCbpqHanOnaP+KKOXjHeEdhrLb9daCR0Grg==",
+      "dev": true,
+      "requires": {
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+        "buffer-es6": "^4.9.2",
+        "crypto-browserify": "^3.11.0",
+        "process-es6": "^0.11.2"
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+    },
     "@tensorflow/tfjs": {
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       "resolved": "https://registry.npmjs.org/@tensorflow/tfjs/-/tfjs-1.2.3.tgz",
@@ -174,6 +197,16 @@
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+    "abstract-leveldown": {
+      "version": "6.0.3",
+      "resolved": "https://registry.npmjs.org/abstract-leveldown/-/abstract-leveldown-6.0.3.tgz",
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+      "dev": true,
+      "requires": {
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+        "xtend": "~4.0.0"
+      }
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       "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.2.0.tgz",
@@ -247,6 +280,17 @@
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       "integrity": "sha1-qJS3XUvE9s1nnvMkSp/Y9Gri1Cg="
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+      "resolved": "https://registry.npmjs.org/asn1.js/-/asn1.js-4.10.1.tgz",
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+      "dev": true,
+      "requires": {
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+        "inherits": "^2.0.1",
+        "minimalistic-assert": "^1.0.0"
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       "resolved": "https://registry.npmjs.org/assign-symbols/-/assign-symbols-1.0.0.tgz",
@@ -363,6 +407,12 @@
         "safe-buffer": "^5.1.1"
       }
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+      "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.8.tgz",
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+      "dev": true
+    },
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       "resolved": "https://registry.npmjs.org/boolbase/-/boolbase-1.0.0.tgz",
@@ -405,6 +455,74 @@
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+      "resolved": "https://registry.npmjs.org/brorand/-/brorand-1.1.0.tgz",
+      "integrity": "sha1-EsJe/kCkXjwyPrhnWgoM5XsiNx8=",
+      "dev": true
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+    "browserify-aes": {
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+      "resolved": "https://registry.npmjs.org/browserify-aes/-/browserify-aes-1.2.0.tgz",
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+      "dev": true,
+      "requires": {
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+        "cipher-base": "^1.0.0",
+        "create-hash": "^1.1.0",
+        "evp_bytestokey": "^1.0.3",
+        "inherits": "^2.0.1",
+        "safe-buffer": "^5.0.1"
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+    "browserify-cipher": {
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+      "resolved": "https://registry.npmjs.org/browserify-cipher/-/browserify-cipher-1.0.1.tgz",
+      "integrity": "sha512-sPhkz0ARKbf4rRQt2hTpAHqn47X3llLkUGn+xEJzLjwY8LRs2p0v7ljvI5EyoRO/mexrNunNECisZs+gw2zz1w==",
+      "dev": true,
+      "requires": {
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+        "browserify-des": "^1.0.0",
+        "evp_bytestokey": "^1.0.0"
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+    "browserify-des": {
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+      "resolved": "https://registry.npmjs.org/browserify-des/-/browserify-des-1.0.2.tgz",
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+      "dev": true,
+      "requires": {
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+        "des.js": "^1.0.0",
+        "inherits": "^2.0.1",
+        "safe-buffer": "^5.1.2"
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+    "browserify-rsa": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/browserify-rsa/-/browserify-rsa-4.0.1.tgz",
+      "integrity": "sha1-IeCr+vbyApzy+vsTNWenAdQTVSQ=",
+      "dev": true,
+      "requires": {
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+        "randombytes": "^2.0.1"
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+    },
+    "browserify-sign": {
+      "version": "4.0.4",
+      "resolved": "https://registry.npmjs.org/browserify-sign/-/browserify-sign-4.0.4.tgz",
+      "integrity": "sha1-qk62jl17ZYuqa/alfmMMvXqT0pg=",
+      "dev": true,
+      "requires": {
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+        "browserify-rsa": "^4.0.0",
+        "create-hash": "^1.1.0",
+        "create-hmac": "^1.1.2",
+        "elliptic": "^6.0.0",
+        "inherits": "^2.0.1",
+        "parse-asn1": "^5.0.0"
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     "browserslist": {
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       "resolved": "https://registry.npmjs.org/browserslist/-/browserslist-4.6.6.tgz",
@@ -416,11 +534,23 @@
         "node-releases": "^1.1.25"
       }
     },
+    "buffer-es6": {
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+      "resolved": "https://registry.npmjs.org/buffer-es6/-/buffer-es6-4.9.3.tgz",
+      "integrity": "sha1-8mNHuC33b9N+GLy1KIxJcM/VxAQ=",
+      "dev": true
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       "resolved": "https://registry.npmjs.org/buffer-from/-/buffer-from-1.1.1.tgz",
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+    "buffer-xor": {
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+      "resolved": "https://registry.npmjs.org/buffer-xor/-/buffer-xor-1.0.3.tgz",
+      "integrity": "sha1-JuYe0UIvtw3ULm42cp7VHYVf6Nk=",
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+      "resolved": "https://registry.npmjs.org/cipher-base/-/cipher-base-1.0.4.tgz",
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+      "dev": true,
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@@ -544,6 +684,12 @@
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+      "resolved": "https://registry.npmjs.org/clone/-/clone-0.1.19.tgz",
+      "integrity": "sha1-YT+2hjmyaklKxTJT4Vsaa9iK2oU=",
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@@ -663,6 +809,62 @@
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+      "resolved": "https://registry.npmjs.org/create-ecdh/-/create-ecdh-4.0.3.tgz",
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+      "dev": true,
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+      "resolved": "https://registry.npmjs.org/create-hash/-/create-hash-1.2.0.tgz",
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+      "dev": true,
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+        "inherits": "^2.0.1",
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+      "resolved": "https://registry.npmjs.org/create-hmac/-/create-hmac-1.1.7.tgz",
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+        "inherits": "^2.0.1",
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+      "dev": true,
+      "requires": {
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+        "browserify-sign": "^4.0.0",
+        "create-ecdh": "^4.0.0",
+        "create-hash": "^1.1.0",
+        "create-hmac": "^1.1.0",
+        "diffie-hellman": "^5.0.0",
+        "inherits": "^2.0.1",
+        "pbkdf2": "^3.0.3",
+        "public-encrypt": "^4.0.0",
+        "randombytes": "^2.0.0",
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     "css-color-names": {
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+    "deferred-leveldown": {
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+      "resolved": "https://registry.npmjs.org/deferred-leveldown/-/deferred-leveldown-5.1.0.tgz",
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+      "dev": true,
+      "requires": {
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@@ -1005,6 +1217,27 @@
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+      "integrity": "sha1-wHTS4qpqipoH29YfmhXCzYPsjsw=",
+      "dev": true,
+      "requires": {
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+        "minimalistic-assert": "^1.0.0"
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+      "resolved": "https://registry.npmjs.org/diffie-hellman/-/diffie-hellman-5.0.3.tgz",
+      "integrity": "sha512-kqag/Nl+f3GwyK25fhUMYj81BUOrZ9IuJsjIcDE5icNM9FJHAVm3VcUDxdLPoQtTuUylWm6ZIknYJwwaPxsUzg==",
+      "dev": true,
+      "requires": {
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+        "miller-rabin": "^4.0.0",
+        "randombytes": "^2.0.0"
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       "dev": true
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+    "elliptic": {
+      "version": "6.5.0",
+      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.0.tgz",
+      "integrity": "sha512-eFOJTMyCYb7xtE/caJ6JJu+bhi67WCYNbkGSknu20pmM8Ke/bqOfdnZWxyoGN26JgfxTbXrsCkEw4KheCT/KGg==",
+      "dev": true,
+      "requires": {
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+        "brorand": "^1.0.1",
+        "hash.js": "^1.0.0",
+        "hmac-drbg": "^1.0.0",
+        "inherits": "^2.0.1",
+        "minimalistic-assert": "^1.0.0",
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       "dev": true
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+    "errno": {
+      "version": "0.1.7",
+      "resolved": "https://registry.npmjs.org/errno/-/errno-0.1.7.tgz",
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+      "dev": true,
+      "requires": {
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@@ -1208,6 +1465,16 @@
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+      "resolved": "https://registry.npmjs.org/evp_bytestokey/-/evp_bytestokey-1.0.3.tgz",
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+      "dev": true,
+      "requires": {
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+      "integrity": "sha1-C+4AUBiusmDQo6865ljdATbsG5k=",
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+    "fwd-stream": {
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+      "resolved": "https://registry.npmjs.org/fwd-stream/-/fwd-stream-1.0.4.tgz",
+      "integrity": "sha1-7Sgcq+1G/uz5Ie4y3ExQs3KsfPo=",
+      "dev": true,
+      "requires": {
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+          "integrity": "sha1-ihis/Kmo9Bd+Cav8YDiTmwXR7t8=",
+          "dev": true
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+        "readable-stream": {
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+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-1.0.34.tgz",
+          "integrity": "sha1-Elgg40vIQtLyqq+v5MKRbuMsFXw=",
+          "dev": true,
+          "requires": {
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+            "inherits": "~2.0.1",
+            "isarray": "0.0.1",
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@@ -1506,6 +1814,26 @@
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+      "integrity": "sha1-X8hoaEfs1zSZQDMZprCj8/auSRg=",
+      "dev": true,
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+    "hash.js": {
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+      "resolved": "https://registry.npmjs.org/hash.js/-/hash.js-1.1.7.tgz",
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+      "dev": true,
+      "requires": {
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     },
+    "randombytes": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/randombytes/-/randombytes-2.1.0.tgz",
+      "integrity": "sha512-vYl3iOX+4CKUWuxGi9Ukhie6fsqXqS9FE2Zaic4tNFD2N2QQaXOMFbuKK4QmDHC0JO6B1Zp41J0LpT0oR68amQ==",
+      "dev": true,
+      "requires": {
+        "safe-buffer": "^5.1.0"
+      }
+    },
+    "randomfill": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/randomfill/-/randomfill-1.0.4.tgz",
+      "integrity": "sha512-87lcbR8+MhcWcUiQ+9e+Rwx8MyR2P7qnt15ynUlbm3TU/fjbgz4GsvfSUDTemtCCtVCqb4ZcEFlyPNTh9bBTLw==",
+      "dev": true,
+      "requires": {
+        "randombytes": "^2.0.5",
+        "safe-buffer": "^5.1.0"
+      }
+    },
     "read-cache": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/read-cache/-/read-cache-1.0.0.tgz",
@@ -3135,6 +3801,16 @@
         "glob": "^7.1.3"
       }
     },
+    "ripemd160": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/ripemd160/-/ripemd160-2.0.2.tgz",
+      "integrity": "sha512-ii4iagi25WusVoiC4B4lq7pbXfAp3D9v5CwfkY33vffw2+pkDjY1D8GaN7spsxvCSx8dkPqOZCEZyfxcmJG2IA==",
+      "dev": true,
+      "requires": {
+        "hash-base": "^3.0.0",
+        "inherits": "^2.0.1"
+      }
+    },
     "rollup": {
       "version": "1.17.0",
       "resolved": "https://registry.npmjs.org/rollup/-/rollup-1.17.0.tgz",
@@ -3280,6 +3956,16 @@
         }
       }
     },
+    "sha.js": {
+      "version": "2.4.11",
+      "resolved": "https://registry.npmjs.org/sha.js/-/sha.js-2.4.11.tgz",
+      "integrity": "sha512-QMEp5B7cftE7APOjk5Y6xgrbWu+WkLVQwk8JNjZ8nKRciZaByEW6MubieAiToS7+dwvrjGhH8jRXz3MVd0AYqQ==",
+      "dev": true,
+      "requires": {
+        "inherits": "^2.0.1",
+        "safe-buffer": "^5.0.1"
+      }
+    },
     "simple-mqtt-client": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/simple-mqtt-client/-/simple-mqtt-client-1.0.1.tgz",
@@ -3559,6 +4245,12 @@
       "integrity": "sha1-6Kr8CsGFW0Zmkp7X3RJ1311sgRs=",
       "dev": true
     },
+    "string-range": {
+      "version": "1.2.2",
+      "resolved": "https://registry.npmjs.org/string-range/-/string-range-1.2.2.tgz",
+      "integrity": "sha1-qJPtNH5yKZvIO++78qaSqNI51d0=",
+      "dev": true
+    },
     "string_decoder": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
@@ -3740,6 +4432,15 @@
       "resolved": "https://registry.npmjs.org/typedarray/-/typedarray-0.0.6.tgz",
       "integrity": "sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c="
     },
+    "typedarray-to-buffer": {
+      "version": "3.1.5",
+      "resolved": "https://registry.npmjs.org/typedarray-to-buffer/-/typedarray-to-buffer-3.1.5.tgz",
+      "integrity": "sha512-zdu8XMNEDepKKR+XYOXAVPtWui0ly0NtohUscw+UmaHiAWT8hrV1rr//H6V+0DvJ3OQ19S979M0laLfX8rm82Q==",
+      "dev": true,
+      "requires": {
+        "is-typedarray": "^1.0.0"
+      }
+    },
     "ultron": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/ultron/-/ultron-1.1.1.tgz",
@@ -3839,14 +4540,6 @@
       "resolved": "https://registry.npmjs.org/use/-/use-3.1.1.tgz",
       "integrity": "sha512-cwESVXlO3url9YWlFW/TA9cshCEhtu7IKJ/p5soJ/gGpj7vbvFrAY/eIioQ6Dw23KjZhYgiIo8HOs1nQ2vr/oQ=="
     },
-    "util": {
-      "version": "0.10.4",
-      "resolved": "https://registry.npmjs.org/util/-/util-0.10.4.tgz",
-      "integrity": "sha512-0Pm9hTQ3se5ll1XihRic3FDIku70C+iHUdT/W926rSgHV5QgXsYbKZN8MSC3tJtSkhuROzvsQjAaFENRXr+19A==",
-      "requires": {
-        "inherits": "2.0.3"
-      }
-    },
     "util-deprecate": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",

package.json

@@ -29,13 +29,13 @@
 		"chroma-js": "^2.0.4",
 		"debug": "^4.1.1",
 		"leaflet": "^1.5.1",
-		"path": "^0.12.7",
 		"postcss-copy": "^7.1.0",
 		"postcss-import": "^12.0.1",
 		"rollup-plugin-terser": "^5.1.1",
 		"simple-mqtt-client": "^1.0.1"
 	},
 	"devDependencies": {
+		"@joseph184/rollup-plugin-node-builtins": "^2.1.4",
 		"@types/better-sqlite3": "^5.4.0",
 		"@types/chroma-js": "^1.4.1",
 		"@types/leaflet": "^1.4.6",

rollup.config.js

@@ -7,12 +7,15 @@ import commonjs from 'rollup-plugin-commonjs';
 import postcss from 'rollup-plugin-postcss';
 import { terser } from "rollup-plugin-terser";
 import replace from 'rollup-plugin-replace';
+import builtins from '@joseph184/rollup-plugin-node-builtins';
 // import json from 'rollup-plugin-json';
 
 import postcss_import from 'postcss-import';
 import postcss_copy from 'postcss-copy';
 
 let plugins = [
+	builtins(),
+	
 	resolve({
 		mainFields: [
 			// use "module" field for ES6 module if possible
@@ -34,9 +37,6 @@ let plugins = [
 
 		// not all files you want to resolve are .js files
 		extensions: ['.mjs', '.js', '.jsx', '.json'], // Default: [ '.mjs', '.js', '.json', '.node' ]
-		
-		// Use the polyfills we've installed as dependencies instead of the Node.js natives, since those aren't available in the browser
-		preferBuiltins: false
 	}),
 	
 	// json({