diff --git a/app/.prettierrc.js b/app/.prettierrc.js
index 2a1f0b48a..2a60b0bdb 100644
--- a/app/.prettierrc.js
+++ b/app/.prettierrc.js
@@ -1,3 +1,4 @@
 module.exports = {
   endOfLine: "auto",
+  trailingComma: "es5",
 };
diff --git a/docs/.prettierignore b/docs/.prettierignore
index 2e03c0b08..5b489b610 100644
--- a/docs/.prettierignore
+++ b/docs/.prettierignore
@@ -3,3 +3,4 @@ build
 .docusaurus
 *.mustache
 hardware-metadata.json
+src/hardware-metadata.d.ts
diff --git a/docs/.prettierrc.js b/docs/.prettierrc.js
index 2a1f0b48a..2a60b0bdb 100644
--- a/docs/.prettierrc.js
+++ b/docs/.prettierrc.js
@@ -1,3 +1,4 @@
 module.exports = {
   endOfLine: "auto",
+  trailingComma: "es5",
 };
diff --git a/docs/eslint.config.mjs b/docs/eslint.config.mjs
index d1bb7e50f..c44970759 100644
--- a/docs/eslint.config.mjs
+++ b/docs/eslint.config.mjs
@@ -1,16 +1,20 @@
 import { defineConfig, globalIgnores } from "eslint/config";
 import globals from "globals";
-import js from "@eslint/js";
+import jseslint from "@eslint/js";
+import tseslint from "typescript-eslint";
 import pluginReact from "eslint-plugin-react";
 import * as mdx from "eslint-plugin-mdx";
 
 export default defineConfig([
-  globalIgnores([".cache-loader/", ".docusaurus/", "build/"]),
-  { files: ["**/*.{js,jsx,md,mdx}"] },
-  {
-    plugins: { js },
-    extends: ["js/recommended"],
-  },
+  globalIgnores([
+    ".cache-loader/",
+    ".docusaurus/",
+    "build/",
+    "src/hardware-metadata.d.ts",
+  ]),
+  { files: ["**/*.{js,jsx,ts,tsx,md,mdx}"] },
+  jseslint.configs.recommended,
+  tseslint.configs.strict,
   mdx.flat,
   pluginReact.configs.flat.recommended,
   pluginReact.configs.flat["jsx-runtime"],
@@ -18,7 +22,10 @@ export default defineConfig([
     languageOptions: {
       globals: { ...globals.browser, ...globals.commonjs, ...globals.node },
     },
-    rules: { "react/no-unescaped-entities": "off" },
+    rules: {
+      "react/no-unescaped-entities": "off",
+      "@typescript-eslint/no-require-imports": "off",
+    },
     settings: {
       react: {
         version: "detect",
diff --git a/docs/package-lock.json b/docs/package-lock.json
index 59f02c3a7..0b24eae7f 100644
--- a/docs/package-lock.json
+++ b/docs/package-lock.json
@@ -46,6 +46,7 @@
         "prettier": "^3.4.2",
         "string-replace-loader": "^3.1.0",
         "typescript": "^5.7.2",
+        "typescript-eslint": "^8.30.1",
         "webpack": "^5.97.1"
       }
     },
@@ -5922,6 +5923,225 @@
       "integrity": "sha512-I4q9QU9MQv4oEOz4tAHJtNz1cwuLxn2F3xcc2iV5WdqLPpUnj30aUuxt1mAxYTG+oe8CZMV/+6rU4S4gRDzqtQ==",
       "license": "MIT"
     },
+    "node_modules/@typescript-eslint/eslint-plugin": {
+      "version": "8.30.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-8.30.1.tgz",
+      "integrity": "sha512-v+VWphxMjn+1t48/jO4t950D6KR8JaJuNXzi33Ve6P8sEmPr5k6CEXjdGwT6+LodVnEa91EQCtwjWNUCPweo+Q==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@eslint-community/regexpp": "^4.10.0",
+        "@typescript-eslint/scope-manager": "8.30.1",
+        "@typescript-eslint/type-utils": "8.30.1",
+        "@typescript-eslint/utils": "8.30.1",
+        "@typescript-eslint/visitor-keys": "8.30.1",
+        "graphemer": "^1.4.0",
+        "ignore": "^5.3.1",
+        "natural-compare": "^1.4.0",
+        "ts-api-utils": "^2.0.1"
+      },
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/typescript-eslint"
+      },
+      "peerDependencies": {
+        "@typescript-eslint/parser": "^8.0.0 || ^8.0.0-alpha.0",
+        "eslint": "^8.57.0 || ^9.0.0",
+        "typescript": ">=4.8.4 <5.9.0"
+      }
+    },
+    "node_modules/@typescript-eslint/parser": {
+      "version": "8.30.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/parser/-/parser-8.30.1.tgz",
+      "integrity": "sha512-H+vqmWwT5xoNrXqWs/fesmssOW70gxFlgcMlYcBaWNPIEWDgLa4W9nkSPmhuOgLnXq9QYgkZ31fhDyLhleCsAg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@typescript-eslint/scope-manager": "8.30.1",
+        "@typescript-eslint/types": "8.30.1",
+        "@typescript-eslint/typescript-estree": "8.30.1",
+        "@typescript-eslint/visitor-keys": "8.30.1",
+        "debug": "^4.3.4"
+      },
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/typescript-eslint"
+      },
+      "peerDependencies": {
+        "eslint": "^8.57.0 || ^9.0.0",
+        "typescript": ">=4.8.4 <5.9.0"
+      }
+    },
+    "node_modules/@typescript-eslint/scope-manager": {
+      "version": "8.30.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/scope-manager/-/scope-manager-8.30.1.tgz",
+      "integrity": "sha512-+C0B6ChFXZkuaNDl73FJxRYT0G7ufVPOSQkqkpM/U198wUwUFOtgo1k/QzFh1KjpBitaK7R1tgjVz6o9HmsRPg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@typescript-eslint/types": "8.30.1",
+        "@typescript-eslint/visitor-keys": "8.30.1"
+      },
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/typescript-eslint"
+      }
+    },
+    "node_modules/@typescript-eslint/type-utils": {
+      "version": "8.30.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/type-utils/-/type-utils-8.30.1.tgz",
+      "integrity": "sha512-64uBF76bfQiJyHgZISC7vcNz3adqQKIccVoKubyQcOnNcdJBvYOILV1v22Qhsw3tw3VQu5ll8ND6hycgAR5fEA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@typescript-eslint/typescript-estree": "8.30.1",
+        "@typescript-eslint/utils": "8.30.1",
+        "debug": "^4.3.4",
+        "ts-api-utils": "^2.0.1"
+      },
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/typescript-eslint"
+      },
+      "peerDependencies": {
+        "eslint": "^8.57.0 || ^9.0.0",
+        "typescript": ">=4.8.4 <5.9.0"
+      }
+    },
+    "node_modules/@typescript-eslint/types": {
+      "version": "8.30.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/types/-/types-8.30.1.tgz",
+      "integrity": "sha512-81KawPfkuulyWo5QdyG/LOKbspyyiW+p4vpn4bYO7DM/hZImlVnFwrpCTnmNMOt8CvLRr5ojI9nU1Ekpw4RcEw==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/typescript-eslint"
+      }
+    },
+    "node_modules/@typescript-eslint/typescript-estree": {
+      "version": "8.30.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/typescript-estree/-/typescript-estree-8.30.1.tgz",
+      "integrity": "sha512-kQQnxymiUy9tTb1F2uep9W6aBiYODgq5EMSk6Nxh4Z+BDUoYUSa029ISs5zTzKBFnexQEh71KqwjKnRz58lusQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@typescript-eslint/types": "8.30.1",
+        "@typescript-eslint/visitor-keys": "8.30.1",
+        "debug": "^4.3.4",
+        "fast-glob": "^3.3.2",
+        "is-glob": "^4.0.3",
+        "minimatch": "^9.0.4",
+        "semver": "^7.6.0",
+        "ts-api-utils": "^2.0.1"
+      },
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/typescript-eslint"
+      },
+      "peerDependencies": {
+        "typescript": ">=4.8.4 <5.9.0"
+      }
+    },
+    "node_modules/@typescript-eslint/typescript-estree/node_modules/brace-expansion": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-2.0.1.tgz",
+      "integrity": "sha512-XnAIvQ8eM+kC6aULx6wuQiwVsnzsi9d3WxzV3FpWTGA19F621kwdbsAcFKXgKUHZWsy+mY6iL1sHTxWEFCytDA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "balanced-match": "^1.0.0"
+      }
+    },
+    "node_modules/@typescript-eslint/typescript-estree/node_modules/minimatch": {
+      "version": "9.0.5",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-9.0.5.tgz",
+      "integrity": "sha512-G6T0ZX48xgozx7587koeX9Ys2NYy6Gmv//P89sEte9V9whIapMNF4idKxnW2QtCcLiTWlb/wfCabAtAFWhhBow==",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "brace-expansion": "^2.0.1"
+      },
+      "engines": {
+        "node": ">=16 || 14 >=14.17"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/isaacs"
+      }
+    },
+    "node_modules/@typescript-eslint/utils": {
+      "version": "8.30.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/utils/-/utils-8.30.1.tgz",
+      "integrity": "sha512-T/8q4R9En2tcEsWPQgB5BQ0XJVOtfARcUvOa8yJP3fh9M/mXraLxZrkCfGb6ChrO/V3W+Xbd04RacUEqk1CFEQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@eslint-community/eslint-utils": "^4.4.0",
+        "@typescript-eslint/scope-manager": "8.30.1",
+        "@typescript-eslint/types": "8.30.1",
+        "@typescript-eslint/typescript-estree": "8.30.1"
+      },
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/typescript-eslint"
+      },
+      "peerDependencies": {
+        "eslint": "^8.57.0 || ^9.0.0",
+        "typescript": ">=4.8.4 <5.9.0"
+      }
+    },
+    "node_modules/@typescript-eslint/visitor-keys": {
+      "version": "8.30.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/visitor-keys/-/visitor-keys-8.30.1.tgz",
+      "integrity": "sha512-aEhgas7aJ6vZnNFC7K4/vMGDGyOiqWcYZPpIWrTKuTAlsvDNKy2GFDqh9smL+iq069ZvR0YzEeq0B8NJlLzjFA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@typescript-eslint/types": "8.30.1",
+        "eslint-visitor-keys": "^4.2.0"
+      },
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/typescript-eslint"
+      }
+    },
+    "node_modules/@typescript-eslint/visitor-keys/node_modules/eslint-visitor-keys": {
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/eslint-visitor-keys/-/eslint-visitor-keys-4.2.0.tgz",
+      "integrity": "sha512-UyLnSehNt62FFhSwjZlHmeokpRK59rcz29j+F1/aDgbkbRTk7wIc9XzdoasMUbRNKDM0qQt/+BJ4BrpFeABemw==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+      },
+      "funding": {
+        "url": "https://opencollective.com/eslint"
+      }
+    },
     "node_modules/@ungap/structured-clone": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/@ungap/structured-clone/-/structured-clone-1.3.0.tgz",
@@ -11099,6 +11319,13 @@
       "integrity": "sha512-RbJ5/jmFcNNCcDV5o9eTnBLJ/HszWV0P73bc+Ff4nS/rJj+YaS6IGyiOL0VoBYX+l1Wrl3k63h/KrH+nhJ0XvQ==",
       "license": "ISC"
     },
+    "node_modules/graphemer": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/graphemer/-/graphemer-1.4.0.tgz",
+      "integrity": "sha512-EtKwoO6kxCL9WO5xipiHTZlSzBm7WLT627TqC/uVRd0HKmq8NXyebnNYxDoBi7wt8eTWrUrKXCOVaFq9x1kgag==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/gray-matter": {
       "version": "4.0.3",
       "resolved": "https://registry.npmjs.org/gray-matter/-/gray-matter-4.0.3.tgz",
@@ -21084,6 +21311,19 @@
         "url": "https://github.com/sponsors/wooorm"
       }
     },
+    "node_modules/ts-api-utils": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/ts-api-utils/-/ts-api-utils-2.1.0.tgz",
+      "integrity": "sha512-CUgTZL1irw8u29bzrOD/nH85jqyc74D6SshFgujOIA7osm2Rz7dYH77agkx7H4FBNxDq7Cjf+IjaX/8zwFW+ZQ==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=18.12"
+      },
+      "peerDependencies": {
+        "typescript": ">=4.8.4"
+      }
+    },
     "node_modules/ts-dedent": {
       "version": "2.2.0",
       "resolved": "https://registry.npmjs.org/ts-dedent/-/ts-dedent-2.2.0.tgz",
@@ -21265,6 +21505,29 @@
         "node": ">=14.17"
       }
     },
+    "node_modules/typescript-eslint": {
+      "version": "8.30.1",
+      "resolved": "https://registry.npmjs.org/typescript-eslint/-/typescript-eslint-8.30.1.tgz",
+      "integrity": "sha512-D7lC0kcehVH7Mb26MRQi64LMyRJsj3dToJxM1+JVTl53DQSV5/7oUGWQLcKl1C1KnoVHxMMU2FNQMffr7F3Row==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@typescript-eslint/eslint-plugin": "8.30.1",
+        "@typescript-eslint/parser": "8.30.1",
+        "@typescript-eslint/utils": "8.30.1"
+      },
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/typescript-eslint"
+      },
+      "peerDependencies": {
+        "eslint": "^8.57.0 || ^9.0.0",
+        "typescript": ">=4.8.4 <5.9.0"
+      }
+    },
     "node_modules/ufo": {
       "version": "1.5.4",
       "resolved": "https://registry.npmjs.org/ufo/-/ufo-1.5.4.tgz",
diff --git a/docs/package.json b/docs/package.json
index 11ea5908d..590c3ab29 100644
--- a/docs/package.json
+++ b/docs/package.json
@@ -65,6 +65,7 @@
     "prettier": "^3.4.2",
     "string-replace-loader": "^3.1.0",
     "typescript": "^5.7.2",
+    "typescript-eslint": "^8.30.1",
     "webpack": "^5.97.1"
   }
 }
diff --git a/docs/src/components/columns.tsx b/docs/src/components/columns.tsx
index f64bc9494..09172c2c5 100644
--- a/docs/src/components/columns.tsx
+++ b/docs/src/components/columns.tsx
@@ -1,4 +1,4 @@
-import React, { ReactNode, CSSProperties } from "react";
+import { ReactNode, CSSProperties } from "react";
 import clsx from "clsx";
 
 interface ColumnsProps {
diff --git a/docs/src/components/hardware-list.tsx b/docs/src/components/hardware-list.tsx
index 86f9a9d05..b27c2356d 100644
--- a/docs/src/components/hardware-list.tsx
+++ b/docs/src/components/hardware-list.tsx
@@ -18,11 +18,11 @@ function itemHasMultiple(item: HardwareMetadata) {
 
 function itemIds(item: HardwareMetadata) {
   if (item.type == "board" || item.type == "shield") {
-    let nodes = (item.siblings ?? [item.id])
-      .map<ElementOrString>((id) => <code key={id}>{id}</code>)
-      .reduce(
+    const nodes = (item.siblings ?? [item.id])
+      .map((id) => <code key={id}>{id}</code>)
+      .reduce<ElementOrString[]>(
         (prev, curr, index) => [...prev, index > 0 ? ", " : "", curr],
-        [] as ElementOrString[]
+        []
       );
     return <span key={item.id}>{nodes}</span>;
   } else {
@@ -81,7 +81,7 @@ function mapInterconnect({
 }
 
 function HardwareList({ items }: HardwareListProps) {
-  let grouped = groupedMetadata(items);
+  const grouped = groupedMetadata(items);
 
   return (
     <>
diff --git a/docs/src/components/hardware-utils.ts b/docs/src/components/hardware-utils.ts
index 76452dc35..f6454bfbd 100644
--- a/docs/src/components/hardware-utils.ts
+++ b/docs/src/components/hardware-utils.ts
@@ -21,7 +21,7 @@ function groupedBoard(agg: GroupedMetadata, board: Board) {
     agg.onboard.push(board);
   } else if (board.exposes) {
     board.exposes.forEach((element) => {
-      let ic = agg.interconnects[element] ?? {
+      const ic = agg.interconnects[element] ?? {
         boards: [],
         shields: [],
       };
@@ -37,12 +37,12 @@ function groupedBoard(agg: GroupedMetadata, board: Board) {
 
 function groupedShield(agg: GroupedMetadata, shield: Shield) {
   shield.requires.forEach((id) => {
-    let ic = agg.interconnects[id] ?? { boards: [], shields: [] };
+    const ic = agg.interconnects[id] ?? { boards: [], shields: [] };
     ic.shields.push(shield);
     agg.interconnects[id] = ic;
   });
   shield.exposes?.forEach((id) => {
-    let ic = agg.interconnects[id] ?? { boards: [], shields: [] };
+    const ic = agg.interconnects[id] ?? { boards: [], shields: [] };
     ic.shields.push(shield);
     agg.interconnects[id] = ic;
   });
@@ -50,7 +50,7 @@ function groupedShield(agg: GroupedMetadata, shield: Shield) {
 }
 
 function groupedInterconnect(agg: GroupedMetadata, item: Interconnect) {
-  let ic = agg.interconnects[item.id] ?? { boards: [], shields: [] };
+  const ic = agg.interconnects[item.id] ?? { boards: [], shields: [] };
   ic.interconnect = item;
   agg.interconnects[item.id] = ic;
 
diff --git a/docs/src/components/interconnect-tabs.tsx b/docs/src/components/interconnect-tabs.tsx
index cfe764b3d..dac9777ef 100644
--- a/docs/src/components/interconnect-tabs.tsx
+++ b/docs/src/components/interconnect-tabs.tsx
@@ -2,16 +2,16 @@ import Tabs from "@theme/Tabs";
 import TabItem from "@theme/TabItem";
 
 import { HardwareMetadata, Interconnect } from "../hardware-metadata";
-import { groupedMetadata, InterconnectDetails } from "./hardware-utils";
+import { groupedMetadata } from "./hardware-utils";
 
 interface InterconnectTabsProps {
   items: HardwareMetadata[];
-  gpio: Boolean;
+  gpio: boolean;
 }
 
-function mapInterconnect(interconnect: Interconnect, gpio: Boolean) {
-  let content = require(`@site/src/data/interconnects/${interconnect.id}/design_guideline.md`);
-  let imageUrl = require(`@site/docs/assets/interconnects/${interconnect.id}/pinout.png`);
+function mapInterconnect(interconnect: Interconnect, gpio: boolean) {
+  const content = require(`@site/src/data/interconnects/${interconnect.id}/design_guideline.md`);
+  const imageUrl = require(`@site/docs/assets/interconnects/${interconnect.id}/pinout.png`);
   return (
     <TabItem value={interconnect.id} key={interconnect.id}>
       <img src={imageUrl.default} />
@@ -53,7 +53,7 @@ function mapInterconnectValue(interconnect: Interconnect) {
 }
 
 function InterconnectTabs({ items, gpio }: InterconnectTabsProps) {
-  let grouped = Object.values(groupedMetadata(items).interconnects)
+  const grouped = Object.values(groupedMetadata(items).interconnects)
     .map((i) => i?.interconnect as Interconnect)
     .filter((i) => i?.design_guideline)
     .sort((a, b) => a.id.localeCompare(b.id));
diff --git a/docs/src/hardware-metadata-static-plugin/index.js b/docs/src/hardware-metadata-static-plugin/index.js
index 7fb6ad83f..6d475bc0e 100644
--- a/docs/src/hardware-metadata-static-plugin/index.js
+++ b/docs/src/hardware-metadata-static-plugin/index.js
@@ -22,9 +22,9 @@ const METADATA_GLOB = path.posix.join(BASE_DIR, "app/boards/**/*.zmk.yml");
  * @param {string} file
  */
 async function readMetadata(file) {
-  /** @type HardwareMetadata[] */
-  // @ts-ignore
-  const documents = yaml.loadAll(await fs.readFile(file, "utf-8"));
+  const documents = /** @type HardwareMetadata[] */ (
+    yaml.loadAll(await fs.readFile(file, "utf-8"))
+  );
 
   return documents.map(
     (metadata) =>
diff --git a/docs/src/keymap-upgrade/headers.ts b/docs/src/keymap-upgrade/headers.ts
index 8aa1928fc..628ca19b2 100644
--- a/docs/src/keymap-upgrade/headers.ts
+++ b/docs/src/keymap-upgrade/headers.ts
@@ -1,4 +1,4 @@
-import type { SyntaxNode, Tree } from "web-tree-sitter";
+import type { Tree } from "web-tree-sitter";
 import { Devicetree, findCapture } from "./parser";
 import { getUpgradeEdits, MatchFunc, ReplaceFunc, TextEdit } from "./textedit";
 
diff --git a/docs/src/keymap-upgrade/keycodes.ts b/docs/src/keymap-upgrade/keycodes.ts
index 5fc3e66ab..e1bc21009 100644
--- a/docs/src/keymap-upgrade/keycodes.ts
+++ b/docs/src/keymap-upgrade/keycodes.ts
@@ -142,7 +142,7 @@ function findBehaviorNodes(paramNode: SyntaxNode) {
   }
 
   // Walk forward from the behavior to collect all its parameters.
-  let nodes = [behavior];
+  const nodes = [behavior];
   let param = behavior.nextNamedSibling;
   while (param && param.type !== "reference") {
     nodes.push(param);
diff --git a/docs/src/keymap-upgrade/parser.ts b/docs/src/keymap-upgrade/parser.ts
index b496d1d5a..1fca0ae71 100644
--- a/docs/src/keymap-upgrade/parser.ts
+++ b/docs/src/keymap-upgrade/parser.ts
@@ -133,7 +133,9 @@ export function findDevicetreeProperty(
     `(property name: (identifier) @name (#eq? @name "${name}")) @prop`
   );
   const matches = query.matches(node);
-  const props = matches.map(({ captures }) => findCapture("prop", captures)!);
+  const props = matches
+    .map(({ captures }) => findCapture("prop", captures))
+    .filter((node) => node !== null);
 
   if (options?.recursive) {
     return props;
diff --git a/docs/src/keymap-upgrade/textedit.ts b/docs/src/keymap-upgrade/textedit.ts
index 263b2ab81..504accdf8 100644
--- a/docs/src/keymap-upgrade/textedit.ts
+++ b/docs/src/keymap-upgrade/textedit.ts
@@ -94,7 +94,7 @@ export function applyEdits(text: string, edits: TextEdit[]) {
   const chunks: TextChunk[] = [];
   let currentIndex = 0;
 
-  for (let edit of edits) {
+  for (const edit of edits) {
     if (edit.startIndex < currentIndex) {
       console.warn("discarding overlapping edit", edit);
       continue;
diff --git a/docs/tsconfig.json b/docs/tsconfig.json
index b8e14486b..8ecf75534 100644
--- a/docs/tsconfig.json
+++ b/docs/tsconfig.json
@@ -4,10 +4,12 @@
   "compilerOptions": {
     "types": ["node", "@docusaurus/theme-classic"],
     "moduleResolution": "Bundler",
+    "module": "esnext",
     "esModuleInterop": true,
     "resolveJsonModule": true,
     "strict": true,
     "noEmit": true,
+    "jsx": "react-jsx",
     "target": "ES6",
     "lib": ["ES2022", "DOM", "DOM.Iterable"]
   }