diff --git a/agent.ts b/agent.ts
index 081165a..e4296a2 100644
--- a/agent.ts
+++ b/agent.ts
@@ -1,16 +1,16 @@
 import fs from "node:fs";
-import {
-  VectorStoreIndex,
-  storageContextFromDefaults,
-  Settings,
-  QueryEngineTool,
-  ReActAgent,
-} from "llamaindex";
 import { OllamaEmbedding } from "@llamaindex/ollama";
 import { OpenAI } from "@llamaindex/openai";
 import { Graph } from "graphology";
+import {
+  QueryEngineTool,
+  ReActAgent,
+  Settings,
+  storageContextFromDefaults,
+  VectorStoreIndex,
+} from "llamaindex";
 
-import { STORAGE_DIR, GRAPH_FILE } from "./constants.ts";
+import { GRAPH_FILE, STORAGE_DIR } from "./constants.ts";
 
 // Configure Settings
 Settings.embedModel = new OllamaEmbedding({
@@ -94,7 +94,7 @@ async function main() {
           const attr = graph.getNodeAttributes(neighbor);
           const edges = graph.edges(nodeId, neighbor);
           const edgeAttr = graph.getEdgeAttributes(edges[0]);
-          result += `- ${neighbor} (${attr.type}) via ${edgeAttr.type}${attr.title ? ": " + attr.title : ""}\n`;
+          result += `- ${neighbor} (${attr.type}) via ${edgeAttr.type}${attr.title ? `: ${attr.title}` : ""}\n`;
         });
         return result;
       }
diff --git a/biome.json b/biome.json
index 82bcdcf..52d8102 100644
--- a/biome.json
+++ b/biome.json
@@ -5,5 +5,5 @@
     "lineWidth": 80,
     "lineEnding": "lf"
   },
-  "files": { "includes": ["**", "!!spec-built/**", "!!engine262/**"] }
+  "files": { "includes": ["**", "!!spec-built", "!!engine262", "!!graphology"] }
 }
diff --git a/bun.lock b/bun.lock
index ac3e1f1..13be5a1 100644
--- a/bun.lock
+++ b/bun.lock
@@ -18,6 +18,7 @@
       },
       "devDependencies": {
         "@biomejs/biome": "^2.4.9",
+        "typescript": "^5.5.2",
       },
     },
   },
@@ -172,6 +173,8 @@
 
     "tslib": ["tslib@2.8.1", "", {}, "sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w=="],
 
+    "typescript": ["typescript@5.9.3", "", { "bin": { "tsc": "bin/tsc", "tsserver": "bin/tsserver" } }, "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw=="],
+
     "undici": ["undici@7.24.6", "", {}, "sha512-Xi4agocCbRzt0yYMZGMA6ApD7gvtUFaxm4ZmeacWI4cZxaF6C+8I8QfofC20NAePiB/IcvZmzkJ7XPa471AEtA=="],
 
     "undici-types": ["undici-types@7.16.0", "", {}, "sha512-Zz+aZWSj8LE6zoxD+xrjh4VfkIG8Ya6LvYkZqtUQGJPZjYl53ypCaUwWqo7eI0x66KBGeRo+mlBEkMSeSZ38Nw=="],
diff --git a/package.json b/package.json
index e1c9b80..4445e42 100644
--- a/package.json
+++ b/package.json
@@ -3,8 +3,11 @@
   "version": "1.0.0",
   "main": "index.js",
   "scripts": {
+    "type-check": "tsc --noEmit",
     "lint": "biome check .",
-    "format": "biome format .",
+    "lint:fix": "biome check . --write",
+    "lint:fix:unsafe": "biome check . --write --unsafe",
+    "format:fix": "biome format . --write",
     "ingest": "bun run setup/ingest.ts",
     "agent": "bun run agent.ts",
     "build": "bun run setup/build_graph.ts",
@@ -28,6 +31,7 @@
     "llamaindex": "^0.12.1"
   },
   "devDependencies": {
+    "typescript": "^5.5.2",
     "@biomejs/biome": "^2.4.9"
   }
-}
\ No newline at end of file
+}
diff --git a/setup/build_graph.ts b/setup/build_graph.ts
index 817e0a6..67dd510 100644
--- a/setup/build_graph.ts
+++ b/setup/build_graph.ts
@@ -1,11 +1,12 @@
-import fs from "fs";
-import path from "path";
-import { glob } from "glob";
+import fs from "node:fs";
+import path from "node:path";
 import * as cheerio from "cheerio";
+import { glob } from "glob";
 import { Graph } from "graphology";
 
 const SPEC_DIR = "./spec-built/multipage";
 const CODE_DIR = "./engine262/src";
+
 import { GRAPH_FILE } from "../constants.ts";
 
 async function buildGraph() {
@@ -24,7 +25,7 @@ async function buildGraph() {
     const content = fs.readFileSync(file, "utf-8");
     const $ = cheerio.load(content);
 
-    $("emu-clause").each((i, elem) => {
+    $("emu-clause").each((_i, elem) => {
       const id = $(elem).attr("id");
       const title = $(elem).find("h1").first().text().trim();
 
@@ -36,12 +37,12 @@ async function buildGraph() {
         // Extract internal links
         $(elem)
           .find("a[href]")
-          .each((j, link) => {
+          .each((_j, link) => {
             const href = $(link).attr("href");
-            if (href && href.includes("#")) {
-              const [targetFile, targetId] = href.split("#");
+            if (href?.includes("#")) {
+              const [_targetFile, targetId] = href.split("#");
               // We only care about links to other sections for now
-              if (targetId && targetId.startsWith("sec-")) {
+              if (targetId?.startsWith("sec-")) {
                 // Add relationship later if nodes exist
               }
             }
@@ -54,14 +55,14 @@ async function buildGraph() {
   for (const file of htmlFiles) {
     const content = fs.readFileSync(file, "utf-8");
     const $ = cheerio.load(content);
-    $("emu-clause").each((i, elem) => {
+    $("emu-clause").each((_i, elem) => {
       const sourceId = $(elem).attr("id");
       if (sourceId && graph.hasNode(sourceId)) {
         $(elem)
           .find("a[href]")
-          .each((j, link) => {
+          .each((_j, link) => {
             const href = $(link).attr("href");
-            if (href && href.includes("#")) {
+            if (href?.includes("#")) {
               const [, targetId] = href.split("#");
               if (
                 targetId &&
diff --git a/setup/ingest.ts b/setup/ingest.ts
index c87dc36..adb2d41 100644
--- a/setup/ingest.ts
+++ b/setup/ingest.ts
@@ -1,15 +1,15 @@
-import fs from "fs";
-import path from "path";
-import { glob } from "glob";
+import fs from "node:fs";
+import path from "node:path";
+import { OllamaEmbedding } from "@llamaindex/ollama";
 import * as cheerio from "cheerio";
+import { glob } from "glob";
 import {
   Document,
-  VectorStoreIndex,
+  SentenceSplitter,
   Settings,
   storageContextFromDefaults,
-  SentenceSplitter,
+  VectorStoreIndex,
 } from "llamaindex";
-import { OllamaEmbedding } from "@llamaindex/ollama";
 
 // Configure Settings
 Settings.embedModel = new OllamaEmbedding({
@@ -17,7 +17,8 @@ Settings.embedModel = new OllamaEmbedding({
 });
 
 const SPEC_DIR = "./spec-built/multipage";
-const CODE_DIR = "./engine262/src";
+const _CODE_DIR = "./engine262/src";
+
 import { STORAGE_DIR } from "../constants.ts";
 
 // Initialize a SentenceSplitter with even smaller chunk size
@@ -34,7 +35,7 @@ async function ingestSpec() {
     const content = fs.readFileSync(file, "utf-8");
     const $ = cheerio.load(content);
 
-    $("emu-clause").each((i, elem) => {
+    $("emu-clause").each((_i, elem) => {
       const id = $(elem).attr("id");
       const title = $(elem).find("h1").first().text().trim();
       // Only extract immediate text to avoid excessive chunking of child sections
@@ -104,7 +105,7 @@ async function main() {
       storageContext,
     });
     console.log("Existing index found, continuing ingestion...");
-  } catch (e) {
+  } catch (_e) {
     console.log("No existing index found, starting fresh.");
   }