diff --git a/.github/workflows/node.js.yml b/.github/workflows/node.js.yml
index d32cdbd..14d55d2 100644
--- a/.github/workflows/node.js.yml
+++ b/.github/workflows/node.js.yml
@@ -1,5 +1,5 @@
-# This workflow will do a clean install of node dependencies, cache/restore them, build the source code and run tests across different versions of node
-# For more information see: https://help.github.com/actions/language-and-framework-guides/using-nodejs-with-github-actions
+# This workflow does a clean install of node dependencies and builds the source code across different versions of node.
+# For more information see: https://docs.github.com/en/actions/use-cases-and-examples/building-and-testing/building-and-testing-nodejs
 
 name: Node.js CI
 
@@ -8,21 +8,31 @@ on:
     branches: [ master ]
   pull_request:
     branches: [ master ]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
 
 jobs:
   build:
 
     runs-on: ubuntu-latest
+    timeout-minutes: 5
 
     strategy:
       matrix:
-        node-version: [22.x]
+        node-version: [22.x, 24.x]
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: ${{ matrix.node-version }}
       - run: npm ci
-      - run: npm run build --if-present
\ No newline at end of file
+      - run: npm run check
+      - run: npm run build
diff --git a/.gitignore b/.gitignore
index 7e2bcaf..5e1be22 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,7 +8,6 @@
 .DS_Store
 
 # generated
-/src/data
 .astro/
 
 # fetched on build from external repo
diff --git a/.nvmrc b/.nvmrc
new file mode 100644
index 0000000..2bd5a0a
--- /dev/null
+++ b/.nvmrc
@@ -0,0 +1 @@
+22
diff --git a/build-scripts/fetchGrammar.mjs b/build-scripts/fetchGrammar.mjs
index 11824da..00e947b 100644
--- a/build-scripts/fetchGrammar.mjs
+++ b/build-scripts/fetchGrammar.mjs
@@ -1,4 +1,6 @@
-const URL = `https://raw.githubusercontent.com/flix/textmate/refs/heads/master/syntaxes/flix.tmLanguage.json`;
+// Pinned to a specific commit of flix/textmate for reproducible builds. Bump the SHA to pick up grammar changes.
+const COMMIT = 'befa883ecec4b0c84e436bdd176dec5475e584ab';
+const URL = `https://raw.githubusercontent.com/flix/textmate/${COMMIT}/syntaxes/flix.tmLanguage.json`;
 const DEST = 'src/grammars/flix.tmLanguage.json';
 
 import { existsSync } from 'node:fs';
diff --git a/package-lock.json b/package-lock.json
index 081c910..c1bfc03 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -17,6 +17,13 @@
         "astro": "^7.0.3",
         "astro-icon": "^1.1.5",
         "bootstrap": "^4.6.2"
+      },
+      "devDependencies": {
+        "@astrojs/check": "^0.9.10",
+        "typescript": "^6.0.3"
+      },
+      "engines": {
+        "node": ">=22"
       }
     },
     "node_modules/@antfu/install-pkg": {
@@ -41,6 +48,62 @@
         "url": "https://github.com/sponsors/antfu"
       }
     },
+    "node_modules/@astrojs/check": {
+      "version": "0.9.10",
+      "resolved": "https://registry.npmjs.org/@astrojs/check/-/check-0.9.10.tgz",
+      "integrity": "sha512-zgx/UQMozdjOa3bOxjgeCFdtpE3c9rRX6xHwa+2QXvy8z8Akifu2AtubHyv/zzC2znO8dl8fFWL4K+Ba9kS8HQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@astrojs/language-server": "^2.16.7",
+        "chokidar": "^4.0.3",
+        "kleur": "^4.1.5",
+        "yargs": "^18.0.0"
+      },
+      "bin": {
+        "astro-check": "bin/astro-check.js"
+      },
+      "peerDependencies": {
+        "typescript": "^5.0.0 || ^6.0.0"
+      }
+    },
+    "node_modules/@astrojs/check/node_modules/chokidar": {
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-4.0.3.tgz",
+      "integrity": "sha512-Qgzu8kfBvo+cA4962jnP1KkS6Dop5NS6g7R5LFYJr4b8Ub94PPQXUksCw9PvXoeXPRRddRNC5C1JQUR2SMGtnA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "readdirp": "^4.0.1"
+      },
+      "engines": {
+        "node": ">= 14.16.0"
+      },
+      "funding": {
+        "url": "https://paulmillr.com/funding/"
+      }
+    },
+    "node_modules/@astrojs/check/node_modules/readdirp": {
+      "version": "4.1.2",
+      "resolved": "https://registry.npmjs.org/readdirp/-/readdirp-4.1.2.tgz",
+      "integrity": "sha512-GDhwkLfywWL2s6vEjyhri+eXmfH6j1L7JE27WhqLeYzoh/A3DBaYGEj2H/HFZCn/kMfim73FXxEJTw06WtxQwg==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">= 14.18.0"
+      },
+      "funding": {
+        "type": "individual",
+        "url": "https://paulmillr.com/funding/"
+      }
+    },
+    "node_modules/@astrojs/compiler": {
+      "version": "2.13.1",
+      "resolved": "https://registry.npmjs.org/@astrojs/compiler/-/compiler-2.13.1.tgz",
+      "integrity": "sha512-f3FN83d2G/v32ipNClRKgYv30onQlMZX1vCeZMjPsMMPl1mDpmbl0+N5BYo4S/ofzqJyS5hvwacEo0CCVDn/Qg==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/@astrojs/compiler-binding": {
       "version": "0.3.2",
       "resolved": "https://registry.npmjs.org/@astrojs/compiler-binding/-/compiler-binding-0.3.2.tgz",
@@ -233,6 +296,48 @@
         "unified": "^11.0.5"
       }
     },
+    "node_modules/@astrojs/language-server": {
+      "version": "2.16.13",
+      "resolved": "https://registry.npmjs.org/@astrojs/language-server/-/language-server-2.16.13.tgz",
+      "integrity": "sha512-ekOa+CYprEq5n4EJC1qTIAhLk49HZIUQuFwrEuF+3JK/pdMaYnWoREFUI2A0KEPOJiFA2kamBzKzbYljDvUxLg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@astrojs/compiler": "^2.13.1",
+        "@astrojs/yaml2ts": "^0.2.4",
+        "@jridgewell/sourcemap-codec": "^1.5.5",
+        "@volar/kit": "~2.4.28",
+        "@volar/language-core": "~2.4.28",
+        "@volar/language-server": "~2.4.28",
+        "@volar/language-service": "~2.4.28",
+        "muggle-string": "^0.4.1",
+        "tinyglobby": "^0.2.16",
+        "volar-service-css": "0.0.71",
+        "volar-service-emmet": "0.0.71",
+        "volar-service-html": "0.0.71",
+        "volar-service-prettier": "0.0.71",
+        "volar-service-typescript": "0.0.71",
+        "volar-service-typescript-twoslash-queries": "0.0.71",
+        "volar-service-yaml": "0.0.71",
+        "vscode-html-languageservice": "^5.6.2",
+        "vscode-uri": "^3.1.0"
+      },
+      "bin": {
+        "astro-ls": "bin/nodeServer.js"
+      },
+      "peerDependencies": {
+        "prettier": "^3.0.0",
+        "prettier-plugin-astro": ">=0.11.0"
+      },
+      "peerDependenciesMeta": {
+        "prettier": {
+          "optional": true
+        },
+        "prettier-plugin-astro": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/@astrojs/markdown-satteri": {
       "version": "0.3.5",
       "resolved": "https://registry.npmjs.org/@astrojs/markdown-satteri/-/markdown-satteri-0.3.5.tgz",
@@ -284,6 +389,16 @@
         "node": "18.20.8 || ^20.3.0 || >=22.0.0"
       }
     },
+    "node_modules/@astrojs/yaml2ts": {
+      "version": "0.2.4",
+      "resolved": "https://registry.npmjs.org/@astrojs/yaml2ts/-/yaml2ts-0.2.4.tgz",
+      "integrity": "sha512-8oddpOae35pJsXPQXhTkM0ypfKPskVsh2bCxRtbf7e+/Epw2nReakFYpLKjZMEr75CsoF203PMnCocpfz0s69A==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "yaml": "^2.8.3"
+      }
+    },
     "node_modules/@babel/helper-string-parser": {
       "version": "7.29.7",
       "resolved": "https://registry.npmjs.org/@babel/helper-string-parser/-/helper-string-parser-7.29.7.tgz",
@@ -523,6 +638,68 @@
         "node": ">= 20.12.0"
       }
     },
+    "node_modules/@emmetio/abbreviation": {
+      "version": "2.3.3",
+      "resolved": "https://registry.npmjs.org/@emmetio/abbreviation/-/abbreviation-2.3.3.tgz",
+      "integrity": "sha512-mgv58UrU3rh4YgbE/TzgLQwJ3pFsHHhCLqY20aJq+9comytTXUDNGG/SMtSeMJdkpxgXSXunBGLD8Boka3JyVA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@emmetio/scanner": "^1.0.4"
+      }
+    },
+    "node_modules/@emmetio/css-abbreviation": {
+      "version": "2.1.8",
+      "resolved": "https://registry.npmjs.org/@emmetio/css-abbreviation/-/css-abbreviation-2.1.8.tgz",
+      "integrity": "sha512-s9yjhJ6saOO/uk1V74eifykk2CBYi01STTK3WlXWGOepyKa23ymJ053+DNQjpFcy1ingpaO7AxCcwLvHFY9tuw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@emmetio/scanner": "^1.0.4"
+      }
+    },
+    "node_modules/@emmetio/css-parser": {
+      "version": "0.4.1",
+      "resolved": "https://registry.npmjs.org/@emmetio/css-parser/-/css-parser-0.4.1.tgz",
+      "integrity": "sha512-2bC6m0MV/voF4CTZiAbG5MWKbq5EBmDPKu9Sb7s7nVcEzNQlrZP6mFFFlIaISM8X6514H9shWMme1fCm8cWAfQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@emmetio/stream-reader": "^2.2.0",
+        "@emmetio/stream-reader-utils": "^0.1.0"
+      }
+    },
+    "node_modules/@emmetio/html-matcher": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/@emmetio/html-matcher/-/html-matcher-1.3.0.tgz",
+      "integrity": "sha512-NTbsvppE5eVyBMuyGfVu2CRrLvo7J4YHb6t9sBFLyY03WYhXET37qA4zOYUjBWFCRHO7pS1B9khERtY0f5JXPQ==",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "@emmetio/scanner": "^1.0.0"
+      }
+    },
+    "node_modules/@emmetio/scanner": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/@emmetio/scanner/-/scanner-1.0.4.tgz",
+      "integrity": "sha512-IqRuJtQff7YHHBk4G8YZ45uB9BaAGcwQeVzgj/zj8/UdOhtQpEIupUhSk8dys6spFIWVZVeK20CzGEnqR5SbqA==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/@emmetio/stream-reader": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/@emmetio/stream-reader/-/stream-reader-2.2.0.tgz",
+      "integrity": "sha512-fXVXEyFA5Yv3M3n8sUGT7+fvecGrZP4k6FnWWMSZVQf69kAq0LLpaBQLGcPR30m3zMmKYhECP4k/ZkzvhEW5kw==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/@emmetio/stream-reader-utils": {
+      "version": "0.1.0",
+      "resolved": "https://registry.npmjs.org/@emmetio/stream-reader-utils/-/stream-reader-utils-0.1.0.tgz",
+      "integrity": "sha512-ZsZ2I9Vzso3Ho/pjZFsmmZ++FWeEd/txqybHTm4OgaZzdS8V9V/YYWQwg5TC38Z7uLWUV1vavpLLbjJtKubR1A==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/@emnapi/core": {
       "version": "2.0.0-alpha.3",
       "resolved": "https://registry.npmjs.org/@emnapi/core/-/core-2.0.0-alpha.3.tgz",
@@ -2131,6 +2308,111 @@
       "integrity": "sha512-60YRaenCQcVjYEKOcG824+DRGGIQ3VKErcBoAEDJZz5bKIs2ZG+X/H9Nk+Q6EVkwJk5QNApxbrc5QtBSwtrXAg==",
       "license": "ISC"
     },
+    "node_modules/@volar/kit": {
+      "version": "2.4.28",
+      "resolved": "https://registry.npmjs.org/@volar/kit/-/kit-2.4.28.tgz",
+      "integrity": "sha512-cKX4vK9dtZvDRaAzeoUdaAJEew6IdxHNCRrdp5Kvcl6zZOqb6jTOfk3kXkIkG3T7oTFXguEMt5+9ptyqYR84Pg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@volar/language-service": "2.4.28",
+        "@volar/typescript": "2.4.28",
+        "typesafe-path": "^0.2.2",
+        "vscode-languageserver-textdocument": "^1.0.11",
+        "vscode-uri": "^3.0.8"
+      },
+      "peerDependencies": {
+        "typescript": "*"
+      }
+    },
+    "node_modules/@volar/language-core": {
+      "version": "2.4.28",
+      "resolved": "https://registry.npmjs.org/@volar/language-core/-/language-core-2.4.28.tgz",
+      "integrity": "sha512-w4qhIJ8ZSitgLAkVay6AbcnC7gP3glYM3fYwKV3srj8m494E3xtrCv6E+bWviiK/8hs6e6t1ij1s2Endql7vzQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@volar/source-map": "2.4.28"
+      }
+    },
+    "node_modules/@volar/language-server": {
+      "version": "2.4.28",
+      "resolved": "https://registry.npmjs.org/@volar/language-server/-/language-server-2.4.28.tgz",
+      "integrity": "sha512-NqcLnE5gERKuS4PUFwlhMxf6vqYo7hXtbMFbViXcbVkbZ905AIVWhnSo0ZNBC2V127H1/2zP7RvVOVnyITFfBw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@volar/language-core": "2.4.28",
+        "@volar/language-service": "2.4.28",
+        "@volar/typescript": "2.4.28",
+        "path-browserify": "^1.0.1",
+        "request-light": "^0.7.0",
+        "vscode-languageserver": "^9.0.1",
+        "vscode-languageserver-protocol": "^3.17.5",
+        "vscode-languageserver-textdocument": "^1.0.11",
+        "vscode-uri": "^3.0.8"
+      }
+    },
+    "node_modules/@volar/language-service": {
+      "version": "2.4.28",
+      "resolved": "https://registry.npmjs.org/@volar/language-service/-/language-service-2.4.28.tgz",
+      "integrity": "sha512-Rh/wYCZJrI5vCwMk9xyw/Z+MsWxlJY1rmMZPsxUoJKfzIRjS/NF1NmnuEcrMbEVGja00aVpCsInJfixQTMdvLw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@volar/language-core": "2.4.28",
+        "vscode-languageserver-protocol": "^3.17.5",
+        "vscode-languageserver-textdocument": "^1.0.11",
+        "vscode-uri": "^3.0.8"
+      }
+    },
+    "node_modules/@volar/source-map": {
+      "version": "2.4.28",
+      "resolved": "https://registry.npmjs.org/@volar/source-map/-/source-map-2.4.28.tgz",
+      "integrity": "sha512-yX2BDBqJkRXfKw8my8VarTyjv48QwxdJtvRgUpNE5erCsgEUdI2DsLbpa+rOQVAJYshY99szEcRDmyHbF10ggQ==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/@volar/typescript": {
+      "version": "2.4.28",
+      "resolved": "https://registry.npmjs.org/@volar/typescript/-/typescript-2.4.28.tgz",
+      "integrity": "sha512-Ja6yvWrbis2QtN4ClAKreeUZPVYMARDYZl9LMEv1iQ1QdepB6wn0jTRxA9MftYmYa4DQ4k/DaSZpFPUfxl8giw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@volar/language-core": "2.4.28",
+        "path-browserify": "^1.0.1",
+        "vscode-uri": "^3.0.8"
+      }
+    },
+    "node_modules/@vscode/emmet-helper": {
+      "version": "2.11.0",
+      "resolved": "https://registry.npmjs.org/@vscode/emmet-helper/-/emmet-helper-2.11.0.tgz",
+      "integrity": "sha512-QLxjQR3imPZPQltfbWRnHU6JecWTF1QSWhx3GAKQpslx7y3Dp6sIIXhKjiUJ/BR9FX8PVthjr9PD6pNwOJfAzw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "emmet": "^2.4.3",
+        "jsonc-parser": "^2.3.0",
+        "vscode-languageserver-textdocument": "^1.0.1",
+        "vscode-languageserver-types": "^3.15.1",
+        "vscode-uri": "^3.0.8"
+      }
+    },
+    "node_modules/@vscode/emmet-helper/node_modules/jsonc-parser": {
+      "version": "2.3.1",
+      "resolved": "https://registry.npmjs.org/jsonc-parser/-/jsonc-parser-2.3.1.tgz",
+      "integrity": "sha512-H8jvkz1O50L3dMZCsLqiuB2tA7muqbSg1AtGEkN0leAqGjsUzDJir3Zwr02BhqdcITPg3ei3mZ+HjMocAknhhg==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/@vscode/l10n": {
+      "version": "0.0.18",
+      "resolved": "https://registry.npmjs.org/@vscode/l10n/-/l10n-0.0.18.tgz",
+      "integrity": "sha512-KYSIHVmslkaCDyw013pphY+d7x1qV8IZupYfeIfzNA+nsaWHbn5uPuQRvdRFsa9zFzGeudPuoGoZ1Op4jrJXIQ==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/acorn": {
       "version": "8.18.0",
       "resolved": "https://registry.npmjs.org/acorn/-/acorn-8.18.0.tgz",
@@ -2143,6 +2425,48 @@
         "node": ">=0.4.0"
       }
     },
+    "node_modules/ajv": {
+      "version": "8.20.0",
+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-8.20.0.tgz",
+      "integrity": "sha512-Thbli+OlOj+iMPYFBVBfJ3OmCAnaSyNn4M1vz9T6Gka5Jt9ba/HIR56joy65tY6kx/FCF5VXNB819Y7/GUrBGA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "fast-deep-equal": "^3.1.3",
+        "fast-uri": "^3.0.1",
+        "json-schema-traverse": "^1.0.0",
+        "require-from-string": "^2.0.2"
+      },
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/epoberezkin"
+      }
+    },
+    "node_modules/ajv-draft-04": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/ajv-draft-04/-/ajv-draft-04-1.0.0.tgz",
+      "integrity": "sha512-mv00Te6nmYbRp5DCwclxtt7yV/joXJPGS7nM+97GdxvuttCOfgI3K4U25zboyeX0O+myI8ERluxQe5wljMmVIw==",
+      "dev": true,
+      "license": "MIT",
+      "peerDependencies": {
+        "ajv": "^8.5.0"
+      },
+      "peerDependenciesMeta": {
+        "ajv": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/ajv-i18n": {
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/ajv-i18n/-/ajv-i18n-4.2.0.tgz",
+      "integrity": "sha512-v/ei2UkCEeuKNXh8RToiFsUclmU+G57LO1Oo22OagNMENIw+Yb8eMwvHu7Vn9fmkjJyv6XclhJ8TbuigSglPkg==",
+      "dev": true,
+      "license": "MIT",
+      "peerDependencies": {
+        "ajv": "^8.0.0-beta.0"
+      }
+    },
     "node_modules/am-i-vibing": {
       "version": "0.4.0",
       "resolved": "https://registry.npmjs.org/am-i-vibing/-/am-i-vibing-0.4.0.tgz",
@@ -2155,6 +2479,32 @@
         "am-i-vibing": "dist/cli.mjs"
       }
     },
+    "node_modules/ansi-regex": {
+      "version": "6.2.2",
+      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-6.2.2.tgz",
+      "integrity": "sha512-Bq3SmSpyFHaWjPk8If9yc6svM8c56dB5BAtW4Qbw5jHTwwXXcTLoRMkpDJp6VL0XzlWaCHTXrkFURMYmD0sLqg==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=12"
+      },
+      "funding": {
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+      }
+    },
+    "node_modules/vscode-languageserver-protocol": {
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+    "node_modules/vscode-languageserver/node_modules/vscode-languageserver-types": {
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+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/vscode-nls": {
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/vscode-nls/-/vscode-nls-5.2.0.tgz",
+      "integrity": "sha512-RAaHx7B14ZU04EU31pT+rKz2/zSl7xMsfIZuo8pd+KZO6PXtQmpevpq3vxvWNcrGbdmhM/rr5Uw5Mz+NBfhVng==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/vscode-uri": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/vscode-uri/-/vscode-uri-3.1.0.tgz",
+      "integrity": "sha512-/BpdSx+yCQGnCvecbyXdxHDkuk55/G3xwnC0GqY4gmQ3j+A+g8kzzgB4Nk/SINjqn6+waqw3EgbVF2QKExkRxQ==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/web-namespaces": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/web-namespaces/-/web-namespaces-2.0.1.tgz",
@@ -4935,6 +5810,42 @@
         "node": ">=18"
       }
     },
+    "node_modules/wrap-ansi": {
+      "version": "9.0.2",
+      "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-9.0.2.tgz",
+      "integrity": "sha512-42AtmgqjV+X1VpdOfyTGOYRi0/zsoLqtXQckTmqTeybT+BDIbM/Guxo7x3pE2vtpr1ok6xRqM9OpBe+Jyoqyww==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "ansi-styles": "^6.2.1",
+        "string-width": "^7.0.0",
+        "strip-ansi": "^7.1.0"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "funding": {
+        "url": "https://github.com/chalk/wrap-ansi?sponsor=1"
+      }
+    },
+    "node_modules/wrap-ansi/node_modules/string-width": {
+      "version": "7.2.0",
+      "resolved": "https://registry.npmjs.org/string-width/-/string-width-7.2.0.tgz",
+      "integrity": "sha512-tsaTIkKW9b4N+AEj+SVA+WhJzV7/zMhcSu78mLKWSk7cXMOSHsBKFWUs0fWwq8QyK3MgJBQRX6Gbi4kYbdvGkQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "emoji-regex": "^10.3.0",
+        "get-east-asian-width": "^1.0.0",
+        "strip-ansi": "^7.1.0"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
     "node_modules/wrappy": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
@@ -4947,6 +5858,16 @@
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       "license": "MIT"
     },
+    "node_modules/y18n": {
+      "version": "5.0.8",
+      "resolved": "https://registry.npmjs.org/y18n/-/y18n-5.0.8.tgz",
+      "integrity": "sha512-0pfFzegeDWJHJIAmTLRP2DwHjdF5s7jo9tuztdQxAhINCdvS+3nGINqPd00AphqJR/0LhANUS6/+7SCb98YOfA==",
+      "dev": true,
+      "license": "ISC",
+      "engines": {
+        "node": ">=10"
+      }
+    },
     "node_modules/yallist": {
       "version": "5.0.0",
       "resolved": "https://registry.npmjs.org/yallist/-/yallist-5.0.0.tgz",
@@ -4956,6 +5877,87 @@
         "node": ">=18"
       }
     },
+    "node_modules/yaml": {
+      "version": "2.9.0",
+      "resolved": "https://registry.npmjs.org/yaml/-/yaml-2.9.0.tgz",
+      "integrity": "sha512-2AvhNX3mb8zd6Zy7INTtSpl1F15HW6Wnqj0srWlkKLcpYl/gMIMJiyuGq2KeI2YFxUPjdlB+3Lc10seMLtL4cA==",
+      "devOptional": true,
+      "license": "ISC",
+      "bin": {
+        "yaml": "bin.mjs"
+      },
+      "engines": {
+        "node": ">= 14.6"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/eemeli"
+      }
+    },
+    "node_modules/yaml-language-server": {
+      "version": "1.23.0",
+      "resolved": "https://registry.npmjs.org/yaml-language-server/-/yaml-language-server-1.23.0.tgz",
+      "integrity": "sha512-3qVyCOexLCWw06PQa5kRPwvMWMZ/eZeCRWUvgD6a0OkqL/4iCnxy2WumbWifa937Uo5xhyWJ0uxlU39ljhNh7A==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@vscode/l10n": "^0.0.18",
+        "ajv": "^8.17.1",
+        "ajv-draft-04": "^1.0.0",
+        "ajv-i18n": "^4.2.0",
+        "prettier": "^3.8.1",
+        "request-light": "^0.5.7",
+        "vscode-json-languageservice": "4.1.8",
+        "vscode-languageserver": "^9.0.0",
+        "vscode-languageserver-textdocument": "^1.0.1",
+        "vscode-languageserver-types": "^3.16.0",
+        "vscode-uri": "^3.0.2",
+        "yaml": "2.8.3"
+      },
+      "bin": {
+        "yaml-language-server": "bin/yaml-language-server"
+      }
+    },
+    "node_modules/yaml-language-server/node_modules/request-light": {
+      "version": "0.5.8",
+      "resolved": "https://registry.npmjs.org/request-light/-/request-light-0.5.8.tgz",
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+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/yaml-language-server/node_modules/yaml": {
+      "version": "2.8.3",
+      "resolved": "https://registry.npmjs.org/yaml/-/yaml-2.8.3.tgz",
+      "integrity": "sha512-AvbaCLOO2Otw/lW5bmh9d/WEdcDFdQp2Z2ZUH3pX9U2ihyUY0nvLv7J6TrWowklRGPYbB/IuIMfYgxaCPg5Bpg==",
+      "dev": true,
+      "license": "ISC",
+      "bin": {
+        "yaml": "bin.mjs"
+      },
+      "engines": {
+        "node": ">= 14.6"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/eemeli"
+      }
+    },
+    "node_modules/yargs": {
+      "version": "18.1.0",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-18.1.0.tgz",
+      "integrity": "sha512-2rAgRKu54VsHkqI0/tYkmluGXHD4KW7yZoycuqDQ15QOTnc2VVfy0nN/1eMhnQLO00A+dwtK20xuCnc1YGeUyg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "cliui": "^9.0.1",
+        "escalade": "^3.1.1",
+        "get-caller-file": "^2.0.5",
+        "string-width": "^8.2.1",
+        "y18n": "^5.0.5",
+        "yargs-parser": "^22.0.0"
+      },
+      "engines": {
+        "node": "^20.19.0 || ^22.12.0 || >=23"
+      }
+    },
     "node_modules/yargs-parser": {
       "version": "22.0.0",
       "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-22.0.0.tgz",
diff --git a/package.json b/package.json
index 1ff68e9..e4e483d 100644
--- a/package.json
+++ b/package.json
@@ -2,6 +2,9 @@
   "name": "web",
   "version": "0.2.0",
   "private": true,
+  "engines": {
+    "node": ">=22"
+  },
   "dependencies": {
     "@astrojs/sitemap": "^3.7.3",
     "@iconify-json/fa-brands": "^1.2.2",
@@ -17,6 +20,11 @@
     "fetch-grammar": "node build-scripts/fetchGrammar.mjs",
     "dev": "npm run fetch-grammar && astro dev --port 3000 --host 127.0.0.1",
     "build": "npm run fetch-grammar && astro build",
+    "check": "npm run fetch-grammar && astro check",
     "preview": "astro preview"
+  },
+  "devDependencies": {
+    "@astrojs/check": "^0.9.10",
+    "typescript": "^6.0.3"
   }
 }
diff --git a/tsconfig.json b/tsconfig.json
new file mode 100644
index 0000000..f11a46c
--- /dev/null
+++ b/tsconfig.json
@@ -0,0 +1,5 @@
+{
+  "extends": "astro/tsconfigs/base",
+  "include": [".astro/types.d.ts", "**/*"],
+  "exclude": ["dist"]
+}