diff --git a/README.md b/README.md
index 60241fc..c903c09 100755
--- a/README.md
+++ b/README.md
@@ -1,24 +1,35 @@
-
-A minimal no-dependency library for making node based UIs.
+A minimal, un-opinionated, extensible library for making interactive UIs.
 
 ## Development
+
 Install all dependencies:
+
 ```
-npm run install 
+npm run install
 ```
 
 Test the library in a vanilla Js website:
+
 ```
 npm run dev-vanilla
-``` 
+```
 
 Test the library in a React website:
+
 ```
 npm run dev-react
-``` 
-
+```
 
+## Testing
 
+Run end-to-end tests:
 
+```
+npm run test:e2e
+```
 
+Run unit tests:
 
+```
+npm run test:ut
+```
diff --git a/demo/react/vite.config.mjs b/demo/react/vite.config.mjs
index 441eb61..77aef25 100644
--- a/demo/react/vite.config.mjs
+++ b/demo/react/vite.config.mjs
@@ -8,7 +8,6 @@ export default defineConfig(({ command, mode }) => {
       port: 3002,
       open: false,
       strictPort: true,
-
       preTransformRequests: false,
     },
   };
diff --git a/demo/vanilla/demo.mjs b/demo/vanilla/demo.mjs
index 817a7f4..9ecfece 100644
--- a/demo/vanilla/demo.mjs
+++ b/demo/vanilla/demo.mjs
@@ -1,6 +1,6 @@
 import SnapLine from "./lib/snapline.mjs";
 
-const sl = new SnapLine("node-editor");
+const sl = new SnapLine();
 
 let addNodeMenu = null;
 
diff --git a/package-lock.json b/package-lock.json
index 853ca37..5976c3d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -20,6 +20,7 @@
         "concurrently": "^8.2.2",
         "eslint": "^8.57.0",
         "jest": "^29.7.0",
+        "jest-environment-jsdom": "^29.7.0",
         "jest-puppeteer": "^10.0.1",
         "prettier": "3.3.2",
         "puppeteer": "^22.13.0",
@@ -2271,6 +2272,15 @@
         "@sinonjs/commons": "^3.0.0"
       }
     },
+    "node_modules/@tootallnate/once": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/@tootallnate/once/-/once-2.0.0.tgz",
+      "integrity": "sha512-XCuKFP5PS55gnMVu3dty8KPatLqUoy/ZYzDzAGCQ8JNFCkLXzmI7vNHCR+XpbZaMWQK/vQubr7PkYq8g470J/A==",
+      "dev": true,
+      "engines": {
+        "node": ">= 10"
+      }
+    },
     "node_modules/@tootallnate/quickjs-emscripten": {
       "version": "0.23.0",
       "resolved": "https://registry.npmjs.org/@tootallnate/quickjs-emscripten/-/quickjs-emscripten-0.23.0.tgz",
@@ -2382,6 +2392,17 @@
         "@types/istanbul-lib-report": "*"
       }
     },
+    "node_modules/@types/jsdom": {
+      "version": "20.0.1",
+      "resolved": "https://registry.npmjs.org/@types/jsdom/-/jsdom-20.0.1.tgz",
+      "integrity": "sha512-d0r18sZPmMQr1eG35u12FZfhIXNrnsPU/g5wvRKCUf/tOGilKKwYMYGqh33BNR6ba+2gkHw1EUiHoN3mn7E5IQ==",
+      "dev": true,
+      "dependencies": {
+        "@types/node": "*",
+        "@types/tough-cookie": "*",
+        "parse5": "^7.0.0"
+      }
+    },
     "node_modules/@types/json-schema": {
       "version": "7.0.15",
       "resolved": "https://registry.npmjs.org/@types/json-schema/-/json-schema-7.0.15.tgz",
@@ -2403,6 +2424,12 @@
       "integrity": "sha512-9aEbYZ3TbYMznPdcdr3SmIrLXwC/AKZXQeCf9Pgao5CKb8CyHuEX5jzWPTkvregvhRJHcpRO6BFoGW9ycaOkYw==",
       "dev": true
     },
+    "node_modules/@types/tough-cookie": {
+      "version": "4.0.5",
+      "resolved": "https://registry.npmjs.org/@types/tough-cookie/-/tough-cookie-4.0.5.tgz",
+      "integrity": "sha512-/Ad8+nIOV7Rl++6f1BdKxFSMgmoqEoYbHRpPcx3JEfv8VRsQe9Z4mCXeJBzxs7mbHY/XOZZuXlRNfhpVPbs6ZA==",
+      "dev": true
+    },
     "node_modules/@types/yargs": {
       "version": "17.0.32",
       "resolved": "https://registry.npmjs.org/@types/yargs/-/yargs-17.0.32.tgz",
@@ -2692,6 +2719,13 @@
       "integrity": "sha512-g5QiLIfbg3pLuYUJPlisNKY+epQJTcMDsOnVNkscrDP1oi7vmJnzOANYJI/1pZcVJ6umUkBv3aFtlg1UvUHGzA==",
       "dev": true
     },
+    "node_modules/abab": {
+      "version": "2.0.6",
+      "resolved": "https://registry.npmjs.org/abab/-/abab-2.0.6.tgz",
+      "integrity": "sha512-j2afSsaIENvHZN2B8GOpF566vZ5WVk5opAiMTvWgaQT8DkbOqsTfvNAvHoRGU2zzP8cPoqys+xHTRDWW8L+/BA==",
+      "deprecated": "Use your platform's native atob() and btoa() methods instead",
+      "dev": true
+    },
     "node_modules/accepts": {
       "version": "1.3.8",
       "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.8.tgz",
@@ -2717,6 +2751,16 @@
         "node": ">=0.4.0"
       }
     },
+    "node_modules/acorn-globals": {
+      "version": "7.0.1",
+      "resolved": "https://registry.npmjs.org/acorn-globals/-/acorn-globals-7.0.1.tgz",
+      "integrity": "sha512-umOSDSDrfHbTNPuNpC2NSnnA3LUrqpevPb4T9jRx4MagXNS0rs+gwiTcAvqCRmsD6utzsrzNt+ebm00SNWiC3Q==",
+      "dev": true,
+      "dependencies": {
+        "acorn": "^8.1.0",
+        "acorn-walk": "^8.0.2"
+      }
+    },
     "node_modules/acorn-jsx": {
       "version": "5.3.2",
       "resolved": "https://registry.npmjs.org/acorn-jsx/-/acorn-jsx-5.3.2.tgz",
@@ -2726,6 +2770,18 @@
         "acorn": "^6.0.0 || ^7.0.0 || ^8.0.0"
       }
     },
+    "node_modules/acorn-walk": {
+      "version": "8.3.3",
+      "resolved": "https://registry.npmjs.org/acorn-walk/-/acorn-walk-8.3.3.tgz",
+      "integrity": "sha512-MxXdReSRhGO7VlFe1bRG/oI7/mdLV9B9JJT0N8vZOhF7gFRR5l3M8W9G8JxmKV+JC5mGqJ0QvqfSOLsCPa4nUw==",
+      "dev": true,
+      "dependencies": {
+        "acorn": "^8.11.0"
+      },
+      "engines": {
+        "node": ">=0.4.0"
+      }
+    },
     "node_modules/agent-base": {
       "version": "7.1.1",
       "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-7.1.1.tgz",
@@ -4055,6 +4111,30 @@
         "node": ">= 8"
       }
     },
+    "node_modules/cssom": {
+      "version": "0.5.0",
+      "resolved": "https://registry.npmjs.org/cssom/-/cssom-0.5.0.tgz",
+      "integrity": "sha512-iKuQcq+NdHqlAcwUY0o/HL69XQrUaQdMjmStJ8JFmUaiiQErlhrmuigkg/CU4E2J0IyUKUrMAgl36TvN67MqTw==",
+      "dev": true
+    },
+    "node_modules/cssstyle": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/cssstyle/-/cssstyle-2.3.0.tgz",
+      "integrity": "sha512-AZL67abkUzIuvcHqk7c09cezpGNcxUxU4Ioi/05xHk4DQeTkWmGYftIE6ctU6AEt+Gn4n1lDStOtj7FKycP71A==",
+      "dev": true,
+      "dependencies": {
+        "cssom": "~0.3.6"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/cssstyle/node_modules/cssom": {
+      "version": "0.3.8",
+      "resolved": "https://registry.npmjs.org/cssom/-/cssom-0.3.8.tgz",
+      "integrity": "sha512-b0tGHbfegbhPJpxpiBPU2sCkigAqtM9O121le6bbOlgyV+NyGyCmVfJ6QW9eRjz8CpNfWEOYBIMIGRYkLwsIYg==",
+      "dev": true
+    },
     "node_modules/cwd": {
       "version": "0.10.0",
       "resolved": "https://registry.npmjs.org/cwd/-/cwd-0.10.0.tgz",
@@ -4077,6 +4157,20 @@
         "node": ">= 14"
       }
     },
+    "node_modules/data-urls": {
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/data-urls/-/data-urls-3.0.2.tgz",
+      "integrity": "sha512-Jy/tj3ldjZJo63sVAvg6LHt2mHvl4V6AgRAmNDtLdm7faqtsx+aJG42rsyCo9JCoRVKwPFzKlIPx3DIibwSIaQ==",
+      "dev": true,
+      "dependencies": {
+        "abab": "^2.0.6",
+        "whatwg-mimetype": "^3.0.0",
+        "whatwg-url": "^11.0.0"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
     "node_modules/date-fns": {
       "version": "2.30.0",
       "resolved": "https://registry.npmjs.org/date-fns/-/date-fns-2.30.0.tgz",
@@ -4110,6 +4204,12 @@
         }
       }
     },
+    "node_modules/decimal.js": {
+      "version": "10.4.3",
+      "resolved": "https://registry.npmjs.org/decimal.js/-/decimal.js-10.4.3.tgz",
+      "integrity": "sha512-VBBaLc1MgL5XpzgIP7ny5Z6Nx3UrRkIViUkPUdtl9aya5amy3De1gsUUSB1g3+3sExYNjCAsAznmukyxCb1GRA==",
+      "dev": true
+    },
     "node_modules/dedent": {
       "version": "1.5.3",
       "resolved": "https://registry.npmjs.org/dedent/-/dedent-1.5.3.tgz",
@@ -4219,6 +4319,19 @@
         "node": ">=6.0.0"
       }
     },
+    "node_modules/domexception": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/domexception/-/domexception-4.0.0.tgz",
+      "integrity": "sha512-A2is4PLG+eeSfoTMA95/s4pvAoSo2mKtiM5jlHkAVewmiO8ISFTFKZjH7UAM1Atli/OT/7JHOrJRJiMKUZKYBw==",
+      "deprecated": "Use your platform's native DOMException instead",
+      "dev": true,
+      "dependencies": {
+        "webidl-conversions": "^7.0.0"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
     "node_modules/duplexer": {
       "version": "0.1.2",
       "resolved": "https://registry.npmjs.org/duplexer/-/duplexer-0.1.2.tgz",
@@ -4264,6 +4377,18 @@
         "once": "^1.4.0"
       }
     },
+    "node_modules/entities": {
+      "version": "4.5.0",
+      "resolved": "https://registry.npmjs.org/entities/-/entities-4.5.0.tgz",
+      "integrity": "sha512-V0hjH4dGPh9Ao5p0MoRY6BVqtwCjhz6vI5LT8AJ55H+4g9/4vbHx1I54fS0XuclLhDHArPQCiMjDxjaL8fPxhw==",
+      "dev": true,
+      "engines": {
+        "node": ">=0.12"
+      },
+      "funding": {
+        "url": "https://github.com/fb55/entities?sponsor=1"
+      }
+    },
     "node_modules/env-paths": {
       "version": "2.2.1",
       "resolved": "https://registry.npmjs.org/env-paths/-/env-paths-2.2.1.tgz",
@@ -5311,6 +5436,18 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/html-encoding-sniffer": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/html-encoding-sniffer/-/html-encoding-sniffer-3.0.0.tgz",
+      "integrity": "sha512-oWv4T4yJ52iKrufjnyZPkrN0CH3QnrUqdB6In1g5Fe1mia8GmF36gnfNySxoZtxD5+NmYw1EElVXiBk93UeskA==",
+      "dev": true,
+      "dependencies": {
+        "whatwg-encoding": "^2.0.0"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
     "node_modules/html-escaper": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/html-escaper/-/html-escaper-2.0.2.tgz",
@@ -5352,6 +5489,18 @@
         "node": ">=10.17.0"
       }
     },
+    "node_modules/iconv-lite": {
+      "version": "0.6.3",
+      "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.6.3.tgz",
+      "integrity": "sha512-4fCk79wshMdzMp2rH06qWrJE4iolqLhCUH+OiuIgU++RB0+94NlDL81atO7GX55uUKueo0txHNtvEyI6D7WdMw==",
+      "dev": true,
+      "dependencies": {
+        "safer-buffer": ">= 2.1.2 < 3.0.0"
+      },
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/ieee754": {
       "version": "1.2.1",
       "resolved": "https://registry.npmjs.org/ieee754/-/ieee754-1.2.1.tgz",
@@ -5598,6 +5747,12 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/is-potential-custom-element-name": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/is-potential-custom-element-name/-/is-potential-custom-element-name-1.0.1.tgz",
+      "integrity": "sha512-bCYeRA2rVibKZd+s2625gGnGF/t7DSqDs4dP7CrLA1m7jKWz6pps0LpYLJN8Q64HtmPKJ1hrN3nzPNKFEKOUiQ==",
+      "dev": true
+    },
     "node_modules/is-stream": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/is-stream/-/is-stream-2.0.1.tgz",
@@ -6366,6 +6521,33 @@
         "node": ">=8"
       }
     },
+    "node_modules/jest-environment-jsdom": {
+      "version": "29.7.0",
+      "resolved": "https://registry.npmjs.org/jest-environment-jsdom/-/jest-environment-jsdom-29.7.0.tgz",
+      "integrity": "sha512-k9iQbsf9OyOfdzWH8HDmrRT0gSIcX+FLNW7IQq94tFX0gynPwqDTW0Ho6iMVNjGz/nb+l/vW3dWM2bbLLpkbXA==",
+      "dev": true,
+      "dependencies": {
+        "@jest/environment": "^29.7.0",
+        "@jest/fake-timers": "^29.7.0",
+        "@jest/types": "^29.6.3",
+        "@types/jsdom": "^20.0.0",
+        "@types/node": "*",
+        "jest-mock": "^29.7.0",
+        "jest-util": "^29.7.0",
+        "jsdom": "^20.0.0"
+      },
+      "engines": {
+        "node": "^14.15.0 || ^16.10.0 || >=18.0.0"
+      },
+      "peerDependencies": {
+        "canvas": "^2.5.0"
+      },
+      "peerDependenciesMeta": {
+        "canvas": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/jest-environment-node": {
       "version": "29.7.0",
       "resolved": "https://registry.npmjs.org/jest-environment-node/-/jest-environment-node-29.7.0.tgz",
@@ -7529,6 +7711,90 @@
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       "dev": true
     },
+    "node_modules/jsdom": {
+      "version": "20.0.3",
+      "resolved": "https://registry.npmjs.org/jsdom/-/jsdom-20.0.3.tgz",
+      "integrity": "sha512-SYhBvTh89tTfCD/CRdSOm13mOBa42iTaTyfyEWBdKcGdPxPtLFBXuHR8XHb33YNYaP+lLbmSvBTsnoesCNJEsQ==",
+      "dev": true,
+      "dependencies": {
+        "abab": "^2.0.6",
+        "acorn": "^8.8.1",
+        "acorn-globals": "^7.0.0",
+        "cssom": "^0.5.0",
+        "cssstyle": "^2.3.0",
+        "data-urls": "^3.0.2",
+        "decimal.js": "^10.4.2",
+        "domexception": "^4.0.0",
+        "escodegen": "^2.0.0",
+        "form-data": "^4.0.0",
+        "html-encoding-sniffer": "^3.0.0",
+        "http-proxy-agent": "^5.0.0",
+        "https-proxy-agent": "^5.0.1",
+        "is-potential-custom-element-name": "^1.0.1",
+        "nwsapi": "^2.2.2",
+        "parse5": "^7.1.1",
+        "saxes": "^6.0.0",
+        "symbol-tree": "^3.2.4",
+        "tough-cookie": "^4.1.2",
+        "w3c-xmlserializer": "^4.0.0",
+        "webidl-conversions": "^7.0.0",
+        "whatwg-encoding": "^2.0.0",
+        "whatwg-mimetype": "^3.0.0",
+        "whatwg-url": "^11.0.0",
+        "ws": "^8.11.0",
+        "xml-name-validator": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=14"
+      },
+      "peerDependencies": {
+        "canvas": "^2.5.0"
+      },
+      "peerDependenciesMeta": {
+        "canvas": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/jsdom/node_modules/agent-base": {
+      "version": "6.0.2",
+      "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-6.0.2.tgz",
+      "integrity": "sha512-RZNwNclF7+MS/8bDg70amg32dyeZGZxiDuQmZxKLAlQjr3jGyLx+4Kkk58UO7D2QdgFIQCovuSuZESne6RG6XQ==",
+      "dev": true,
+      "dependencies": {
+        "debug": "4"
+      },
+      "engines": {
+        "node": ">= 6.0.0"
+      }
+    },
+    "node_modules/jsdom/node_modules/http-proxy-agent": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/http-proxy-agent/-/http-proxy-agent-5.0.0.tgz",
+      "integrity": "sha512-n2hY8YdoRE1i7r6M0w9DIw5GgZN0G25P8zLCRQ8rjXtTU3vsNFBI/vWK/UIeE6g5MUUz6avwAPXmL6Fy9D/90w==",
+      "dev": true,
+      "dependencies": {
+        "@tootallnate/once": "2",
+        "agent-base": "6",
+        "debug": "4"
+      },
+      "engines": {
+        "node": ">= 6"
+      }
+    },
+    "node_modules/jsdom/node_modules/https-proxy-agent": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/https-proxy-agent/-/https-proxy-agent-5.0.1.tgz",
+      "integrity": "sha512-dFcAjpTQFgoLMzC2VwU+C/CbS7uRL0lWmxDITmqm7C+7F0Odmj6s9l6alZc6AELXhrnggM2CeWSXHGOdX2YtwA==",
+      "dev": true,
+      "dependencies": {
+        "agent-base": "6",
+        "debug": "4"
+      },
+      "engines": {
+        "node": ">= 6"
+      }
+    },
     "node_modules/jsesc": {
       "version": "2.5.2",
       "resolved": "https://registry.npmjs.org/jsesc/-/jsesc-2.5.2.tgz",
@@ -7902,6 +8168,12 @@
         "node": ">=8"
       }
     },
+    "node_modules/nwsapi": {
+      "version": "2.2.12",
+      "resolved": "https://registry.npmjs.org/nwsapi/-/nwsapi-2.2.12.tgz",
+      "integrity": "sha512-qXDmcVlZV4XRtKFzddidpfVP4oMSGhga+xdMc25mv8kaLUHtgzCDhUxkrN8exkGdTlLNaXj7CV3GtON7zuGZ+w==",
+      "dev": true
+    },
     "node_modules/on-headers": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/on-headers/-/on-headers-1.0.2.tgz",
@@ -8071,6 +8343,18 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/parse5": {
+      "version": "7.1.2",
+      "resolved": "https://registry.npmjs.org/parse5/-/parse5-7.1.2.tgz",
+      "integrity": "sha512-Czj1WaSVpaoj0wbhMzLmWD69anp2WH7FXMB9n1Sy8/ZFF9jolSQVMu1Ij5WIyGmcBmhk7EOndpO4mIpihVqAXw==",
+      "dev": true,
+      "dependencies": {
+        "entities": "^4.4.0"
+      },
+      "funding": {
+        "url": "https://github.com/inikulin/parse5?sponsor=1"
+      }
+    },
     "node_modules/path-exists": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/path-exists/-/path-exists-4.0.0.tgz",
@@ -8381,6 +8665,12 @@
         "node": ">= 0.10"
       }
     },
+    "node_modules/psl": {
+      "version": "1.9.0",
+      "resolved": "https://registry.npmjs.org/psl/-/psl-1.9.0.tgz",
+      "integrity": "sha512-E/ZsdU4HLs/68gYzgGTkMicWTLPdAftJLfJFlLUAAKZGkStNU72sZjT66SnMDVOfOWY/YAoiD7Jxa9iHvngcag==",
+      "dev": true
+    },
     "node_modules/pump": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/pump/-/pump-3.0.0.tgz",
@@ -8494,6 +8784,12 @@
         }
       ]
     },
+    "node_modules/querystringify": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/querystringify/-/querystringify-2.2.0.tgz",
+      "integrity": "sha512-FIqgj2EUvTa7R50u0rGsyTftzjYmv/a3hO345bZNrqabNqjtgiDMgmo4mkUjd+nzU5oF3dClKqFIPUKybUyqoQ==",
+      "dev": true
+    },
     "node_modules/queue-microtask": {
       "version": "1.2.3",
       "resolved": "https://registry.npmjs.org/queue-microtask/-/queue-microtask-1.2.3.tgz",
@@ -8652,6 +8948,12 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/requires-port": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/requires-port/-/requires-port-1.0.0.tgz",
+      "integrity": "sha512-KigOCHcocU3XODJxsu8i/j8T9tzT4adHiecwORRQ0ZZFcp7ahwXuRU1m+yuO90C5ZUyGeGfocHDI14M3L3yDAQ==",
+      "dev": true
+    },
     "node_modules/resolve": {
       "version": "1.22.8",
       "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.22.8.tgz",
@@ -8819,6 +9121,12 @@
       "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==",
       "dev": true
     },
+    "node_modules/safer-buffer": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
+      "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==",
+      "dev": true
+    },
     "node_modules/sass": {
       "version": "1.75.0",
       "resolved": "https://registry.npmjs.org/sass/-/sass-1.75.0.tgz",
@@ -8836,6 +9144,18 @@
         "node": ">=14.0.0"
       }
     },
+    "node_modules/saxes": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/saxes/-/saxes-6.0.0.tgz",
+      "integrity": "sha512-xAg7SOnEhrm5zI3puOOKyy1OMcMlIJZYNJY7xLBwSze0UjhPLnWfj2GF2EpT0jmzaJKIWKHLsaSSajf35bcYnA==",
+      "dev": true,
+      "dependencies": {
+        "xmlchars": "^2.2.0"
+      },
+      "engines": {
+        "node": ">=v12.22.7"
+      }
+    },
     "node_modules/scheduler": {
       "version": "0.23.0",
       "resolved": "https://registry.npmjs.org/scheduler/-/scheduler-0.23.0.tgz",
@@ -9326,6 +9646,12 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/symbol-tree": {
+      "version": "3.2.4",
+      "resolved": "https://registry.npmjs.org/symbol-tree/-/symbol-tree-3.2.4.tgz",
+      "integrity": "sha512-9QNk5KwDF+Bvz+PyObkmSYjI5ksVUYtjW7AU22r2NKcfLJcXp96hkDWU3+XndOsUb+AQ9QhfzfCT2O+CNWT5Tw==",
+      "dev": true
+    },
     "node_modules/tar-fs": {
       "version": "3.0.5",
       "resolved": "https://registry.npmjs.org/tar-fs/-/tar-fs-3.0.5.tgz",
@@ -9433,6 +9759,42 @@
         "node": ">=8.0"
       }
     },
+    "node_modules/tough-cookie": {
+      "version": "4.1.4",
+      "resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-4.1.4.tgz",
+      "integrity": "sha512-Loo5UUvLD9ScZ6jh8beX1T6sO1w2/MpCRpEP7V280GKMVUQ0Jzar2U3UJPsrdbziLEMMhu3Ujnq//rhiFuIeag==",
+      "dev": true,
+      "dependencies": {
+        "psl": "^1.1.33",
+        "punycode": "^2.1.1",
+        "universalify": "^0.2.0",
+        "url-parse": "^1.5.3"
+      },
+      "engines": {
+        "node": ">=6"
+      }
+    },
+    "node_modules/tough-cookie/node_modules/universalify": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/universalify/-/universalify-0.2.0.tgz",
+      "integrity": "sha512-CJ1QgKmNg3CwvAv/kOFmtnEN05f0D/cn9QntgNOQlQF9dgvVTHj3t+8JPdjqawCHk7V/KA+fbUqzZ9XWhcqPUg==",
+      "dev": true,
+      "engines": {
+        "node": ">= 4.0.0"
+      }
+    },
+    "node_modules/tr46": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/tr46/-/tr46-3.0.0.tgz",
+      "integrity": "sha512-l7FvfAHlcmulp8kr+flpQZmVwtu7nfRV7NZujtN0OqES8EL4O4e0qqzL0DC5gAvx/ZC/9lk6rhcUwYvkBnBnYA==",
+      "dev": true,
+      "dependencies": {
+        "punycode": "^2.1.1"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
     "node_modules/tree-kill": {
       "version": "1.2.2",
       "resolved": "https://registry.npmjs.org/tree-kill/-/tree-kill-1.2.2.tgz",
@@ -9621,6 +9983,16 @@
         "punycode": "^2.1.0"
       }
     },
+    "node_modules/url-parse": {
+      "version": "1.5.10",
+      "resolved": "https://registry.npmjs.org/url-parse/-/url-parse-1.5.10.tgz",
+      "integrity": "sha512-WypcfiRhfeUP9vvF0j6rw0J3hrWrw6iZv3+22h6iRMJ/8z1Tj6XfLP4DsUix5MhMPnXpiHDoKyoZ/bdCkwBCiQ==",
+      "dev": true,
+      "dependencies": {
+        "querystringify": "^2.1.1",
+        "requires-port": "^1.0.0"
+      }
+    },
     "node_modules/urlpattern-polyfill": {
       "version": "10.0.0",
       "resolved": "https://registry.npmjs.org/urlpattern-polyfill/-/urlpattern-polyfill-10.0.0.tgz",
@@ -9706,6 +10078,18 @@
         }
       }
     },
+    "node_modules/w3c-xmlserializer": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/w3c-xmlserializer/-/w3c-xmlserializer-4.0.0.tgz",
+      "integrity": "sha512-d+BFHzbiCx6zGfz0HyQ6Rg69w9k19nviJspaj4yNscGjrHu94sVP+aRm75yEbCh+r2/yR+7q6hux9LVtbuTGBw==",
+      "dev": true,
+      "dependencies": {
+        "xml-name-validator": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=14"
+      }
+    },
     "node_modules/wait-on": {
       "version": "7.2.0",
       "resolved": "https://registry.npmjs.org/wait-on/-/wait-on-7.2.0.tgz",
@@ -9734,6 +10118,49 @@
         "makeerror": "1.0.12"
       }
     },
+    "node_modules/webidl-conversions": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-7.0.0.tgz",
+      "integrity": "sha512-VwddBukDzu71offAQR975unBIGqfKZpM+8ZX6ySk8nYhVoo5CYaZyzt3YBvYtRtO+aoGlqxPg/B87NGVZ/fu6g==",
+      "dev": true,
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/whatwg-encoding": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/whatwg-encoding/-/whatwg-encoding-2.0.0.tgz",
+      "integrity": "sha512-p41ogyeMUrw3jWclHWTQg1k05DSVXPLcVxRTYsXUk+ZooOCZLcoYgPZ/HL/D/N+uQPOtcp1me1WhBEaX02mhWg==",
+      "dev": true,
+      "dependencies": {
+        "iconv-lite": "0.6.3"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/whatwg-mimetype": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/whatwg-mimetype/-/whatwg-mimetype-3.0.0.tgz",
+      "integrity": "sha512-nt+N2dzIutVRxARx1nghPKGv1xHikU7HKdfafKkLNLindmPU/ch3U31NOCGGA/dmPcmb1VlofO0vnKAcsm0o/Q==",
+      "dev": true,
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/whatwg-url": {
+      "version": "11.0.0",
+      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-11.0.0.tgz",
+      "integrity": "sha512-RKT8HExMpoYx4igMiVMY83lN6UeITKJlBQ+vR/8ZJ8OCdSiN3RwCq+9gH0+Xzj0+5IrM6i4j/6LuvzbZIQgEcQ==",
+      "dev": true,
+      "dependencies": {
+        "tr46": "^3.0.0",
+        "webidl-conversions": "^7.0.0"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
     "node_modules/which": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz",
@@ -9860,6 +10287,21 @@
         }
       }
     },
+    "node_modules/xml-name-validator": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/xml-name-validator/-/xml-name-validator-4.0.0.tgz",
+      "integrity": "sha512-ICP2e+jsHvAj2E2lIHxa5tjXRlKDJo4IdvPvCXbXQGdzSfmSpNVyIKMvoZHjDY9DP0zV17iI85o90vRFXNccRw==",
+      "dev": true,
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/xmlchars": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/xmlchars/-/xmlchars-2.2.0.tgz",
+      "integrity": "sha512-JZnDKK8B0RCDw84FNdDAIpZK+JuJw+s7Lz8nksI7SIuU3UXJJslUthsi+uWBUYOwPFwW7W7PRLRfUKpxjtjFCw==",
+      "dev": true
+    },
     "node_modules/y18n": {
       "version": "5.0.8",
       "resolved": "https://registry.npmjs.org/y18n/-/y18n-5.0.8.tgz",
diff --git a/package.json b/package.json
index 9813e78..f4e97ff 100755
--- a/package.json
+++ b/package.json
@@ -14,10 +14,12 @@
     "dev:vanilla": "FRAMEWORK=vanilla npx vite build --mode development --watch  & FRAMEWORK=vanilla npx vite serve demo/vanilla --config demo/vanilla/vite.config.mjs --host",
     "dev:react": "FRAMEWORK=react npx vite build --mode development --watch    & FRAMEWORK=react npx vite serve demo/react --config demo/react/vite.config.mjs --host",
     "dev:all": "concurrently --kill-others \"npm run dev:vanilla\" \"npm run dev:react\"",
-    "test": "start-server-and-test dev:all \"localhost:3001|localhost:3002\" jest",
+    "test:e2e": "start-server-and-test dev:all \"localhost:3001|localhost:3002\" 'jest ./tests/e2e --config ./tests/e2e/jest.config.js'",
+    "test:unit": "npm run build:dev && jest ./tests/unit --config ./tests/unit/jest.config.js",
     "format": "prettier --write src",
     "lint": "eslint src --ext .ts",
-    "build": "vite build --mode production"
+    "build": "vite build --mode production",
+    "build:dev": "FRAMEWORK=test npx vite build --mode development"
   },
   "repository": {
     "type": "git",
@@ -38,6 +40,7 @@
     "concurrently": "^8.2.2",
     "eslint": "^8.57.0",
     "jest": "^29.7.0",
+    "jest-environment-jsdom": "^29.7.0",
     "jest-puppeteer": "^10.0.1",
     "prettier": "3.3.2",
     "puppeteer": "^22.13.0",
diff --git a/jest.config.js b/tests/e2e/jest.config.js
similarity index 76%
rename from jest.config.js
rename to tests/e2e/jest.config.js
index 7693f0b..933e025 100644
--- a/jest.config.js
+++ b/tests/e2e/jest.config.js
@@ -1,7 +1,6 @@
 / @type {import('jest').Config} */;
 const config = {
   preset: "jest-puppeteer",
-  // Other Jest configurations...
 };
 
 module.exports = config;
diff --git a/tests/e2e/node.test.js b/tests/e2e/node.test.js
index 096ff19..f48285e 100644
--- a/tests/e2e/node.test.js
+++ b/tests/e2e/node.test.js
@@ -18,13 +18,51 @@ describe("Check that the demo site loads the expected nodes after startup.", ()
   );
 });
 
-// describe("Demo website should have 3 lines connecting 4 nodes", () => {
-//   beforeAll(async () => {
-//     await page.goto("http://localhost:3001");
-//   });
-
-//   it('should have svgs that has data attribute "snapline-type" = "line"', async () => {
-//     const lines = await page.$$("svg[data-snapline-type='line']");
-//     expect(lines.length).toBe(3);
-//   });
-// });
+describe("Test the basic interactions with nodes.", () => {
+  beforeAll(async () => {
+    for (const [name, port] of hyperparameter) {
+      await page.goto(`http://localhost:${port}`);
+    }
+  });
+
+  it.each(hyperparameter)(
+    "[%s, %i] should be able to press and select a node",
+    async (name, port) => {
+      await page.goto(`http://localhost:${port}`);
+      const node = await page.$("div[data-snapline-type='node']");
+      expect(node).not.toBeNull();
+      await node.click();
+      const selected = await node.evaluate((node) =>
+        node.classList.contains("sl-focus"),
+      );
+      expect(selected).toBe(true);
+    },
+  );
+
+  it.each(hyperparameter)(
+    "[%s, %i] should be able to press and drag a node",
+    async (name, port) => {
+      await page.goto(`http://localhost:${port}`);
+      const node = await page.waitForSelector("div[data-snapline-type='node']");
+      expect(node).not.toBeNull();
+
+      let { startX, startY } = await page.evaluate((el) => {
+        const { x, y } = el.getBoundingClientRect();
+        return { startX: x, startY: y };
+      }, node);
+
+      await page.mouse.move(startX + 10, startY + 10);
+      await page.mouse.down();
+      await page.mouse.move(startX + 20, startY + 20);
+      await page.mouse.up();
+
+      const { endX, endY } = await page.evaluate((el) => {
+        const { x, y } = el.getBoundingClientRect();
+        return { endX: x, endY: y };
+      }, node);
+
+      expect(endX - startX).toBeCloseTo(10);
+      expect(endY - startY).toBeCloseTo(10);
+    },
+  );
+});
diff --git a/tests/unit/dom/node.test.js b/tests/unit/dom/node.test.js
new file mode 100644
index 0000000..fe5aeb1
--- /dev/null
+++ b/tests/unit/dom/node.test.js
@@ -0,0 +1,92 @@
+SnapLine = require("../../../dist/snapline.umd");
+
+const testNodeHTML = `
+    <div class="sl-node" sl-init="initMath">
+      <div class="sl-row right">
+        <span class="sl-label right">Result</span>
+        <span class="sl-connector right" id="result"></span>
+      </div>
+      <div class="sl-row">
+        <select class="sl-input" sl-name="operation" id="operation">
+          <option value="+">Add</option>
+          <option value="-">Subtract</option>
+          <option value="*">Multiply</option>
+          <option value="/">Divide</option>
+        </select>
+      </div>
+      <div class="sl-row">
+        <span class="sl-connector left" id="input_1"></span>
+        <span class="sl-label">Input 1</span>
+        <input class="sl-input" type="number" value="0" id="form_1" />
+      </div>
+      <div class="sl-row">
+        <span class="sl-connector left" id="input_2"></span>
+        <span class="sl-label">Input 2</span>
+        <input class="sl-input" type="number" value="0" id="form_2" />
+      </div>
+    </div>
+`.trim();
+
+const mockContainer = `
+     <main>
+      <div id="sl-canvas-container">
+        <div id="sl-canvas">
+          <div id="sl-background"></div>
+        </div>
+        <div id="sl-selection"></div>
+      </div>
+    </main>
+`.trim();
+
+global.ResizeObserver = jest.fn().mockImplementation(() => ({
+  observe: jest.fn(),
+  unobserve: jest.fn(),
+  disconnect: jest.fn(),
+}));
+
+describe("Check that the demo site loads the expected nodes after startup.", () => {
+  let sl = null;
+
+  beforeEach(() => {
+    document.getElementsByTagName("html")[0].innerHTML = mockContainer;
+    sl = new SnapLine();
+    sl.initSnapLine(
+      document.getElementById("sl-canvas-container"),
+      document.getElementById("sl-canvas"),
+      document.getElementById("sl-background"),
+      document.getElementById("sl-selection"),
+    );
+  });
+
+  afterEach(() => {
+    document.getElementsByTagName("html")[0].innerHTML = "";
+  });
+
+  it("should be able to initialize the sample node", async () => {
+    let mockNode = document.createElement("div");
+    mockNode.innerHTML = testNodeHTML;
+    mockNode = mockNode.firstChild;
+
+    let node = sl.createNode();
+    node.initNode(mockNode);
+    // The div should have data-snapline-type = "node"
+    expect(mockNode.getAttribute("data-snapline-type")).toBe("node");
+  });
+
+  it("should initialize the DOM for connectors", async () => {
+    let mockNode = document.createElement("div");
+    mockNode.innerHTML = testNodeHTML;
+    mockNode = mockNode.firstChild;
+
+    let node = sl.createNode();
+    node.initNode(mockNode);
+
+    let connectors = mockNode.querySelectorAll(".sl-connector");
+    expect(connectors.length).toBe(3);
+    for (let i = 0; i < connectors.length; i++) {
+      expect(connectors[i].getAttribute("data-snapline-type")).toBe(
+        "connector",
+      );
+    }
+  });
+});
diff --git a/tests/unit/jest.config.js b/tests/unit/jest.config.js
new file mode 100644
index 0000000..314ba49
--- /dev/null
+++ b/tests/unit/jest.config.js
@@ -0,0 +1,6 @@
+/ @type {import('jest').Config} */;
+const config = {
+  testEnvironment: "jsdom",
+};
+
+module.exports = config;
diff --git a/vite.config.mjs b/vite.config.mjs
index a2f1605..b052aed 100644
--- a/vite.config.mjs
+++ b/vite.config.mjs
@@ -13,6 +13,8 @@ export default defineConfig(({ command, mode }) => {
       case "react":
         outputDir = "demo/react/src/lib";
         break;
+      case "test":
+        break;
       default:
         throw new Error("Invalid FRAMEWORK_ENV");
     }
@@ -25,7 +27,7 @@ export default defineConfig(({ command, mode }) => {
         filename: "snapline",
       },
       outDir: outputDir,
-      minify: "terser",
+      minify: mode === "production" ? "terser" : false,
       terserOptions: {
         toplevel: true,
         mangle: {