diff --git a/src/language/activate.ts b/src/language/activate.ts
index fa18203..4492a81 100644
--- a/src/language/activate.ts
+++ b/src/language/activate.ts
@@ -20,5 +20,5 @@ export function activateLanguage(context: vscode.ExtensionContext) {
       { scheme: "file", language: "amalgam" },
       new AmalgamDefinitionProvider()
     )
-  )
+  );
 }
diff --git a/src/language/definitions.ts b/src/language/definitions.ts
index 8fc10d3..93bd8b0 100644
--- a/src/language/definitions.ts
+++ b/src/language/definitions.ts
@@ -1,6 +1,6 @@
 import * as vscode from "vscode";
-import * as fs from 'fs';
-import * as path from 'path';
+import * as fs from "fs";
+import * as path from "path";
 
 export class AmalgamDefinitionProvider implements vscode.DefinitionProvider {
   async provideDefinition(
@@ -8,45 +8,48 @@ export class AmalgamDefinitionProvider implements vscode.DefinitionProvider {
     position: vscode.Position,
     token: vscode.CancellationToken
   ): Promise<vscode.Definition | vscode.LocationLink[] | undefined> {
-      const wordRange = document.getWordRangeAtPosition(position);
-      if (!wordRange) {
-          return undefined;
-      }
-      let word = document.getText(wordRange);
+    const wordRange = document.getWordRangeAtPosition(position);
+    if (!wordRange) {
+      return undefined;
+    }
+    let word = document.getText(wordRange);
 
-      // Check for exclamation point before the word
-      if (wordRange.start.character > 0) {
-        const charBeforeWord = document.getText(new vscode.Range(
-            new vscode.Position(wordRange.start.line, wordRange.start.character - 1),
-            wordRange.start
-        ));
-        if (charBeforeWord === '!') {
-            word = '!' + word;
-        }
+    // Check for exclamation point before the word
+    if (wordRange.start.character > 0) {
+      const charBeforeWord = document.getText(
+        new vscode.Range(new vscode.Position(wordRange.start.line, wordRange.start.character - 1), wordRange.start)
+      );
+      if (charBeforeWord === "!") {
+        word = "!" + word;
       }
-      const definitionPattern = new RegExp(`#${word}`);
+    }
+    const definitionPattern = new RegExp(`#${word}`);
 
-      const workspaceFolders = vscode.workspace.workspaceFolders;
-      if (!workspaceFolders) {
-          return undefined;
-      }
+    const workspaceFolders = vscode.workspace.workspaceFolders;
+    if (!workspaceFolders) {
+      return undefined;
+    }
 
-      const rootPath = workspaceFolders[0].uri.fsPath;
-      const files = await this.getAllAmlgFiles(rootPath);
+    const rootPath = workspaceFolders[0].uri.fsPath;
+    const files = await this.getAllAmlgFiles(rootPath);
 
-      for (const file of files) {
-          const content = await this.readFile(file);
-          const lines = content.split('\n');
-          for (let i = 0; i < lines.length; i++) {
-              if (definitionPattern.test(lines[i])) {
-                  const definitionUri = vscode.Uri.file(file);
-                  const definitionPosition = new vscode.Position(i, lines[i].indexOf(`#${word}`));
-                  return new vscode.Location(definitionUri, definitionPosition);
-              }
-          }
+    for (const file of files) {
+      if (token.isCancellationRequested) {
+        return undefined;
       }
 
-      return undefined;
+      const content = await this.readFile(file);
+      const lines = content.split("\n");
+      for (let i = 0; i < lines.length; i++) {
+        if (definitionPattern.test(lines[i])) {
+          const definitionUri = vscode.Uri.file(file);
+          const definitionPosition = new vscode.Position(i, lines[i].indexOf(`#${word}`));
+          return new vscode.Location(definitionUri, definitionPosition);
+        }
+      }
+    }
+
+    return undefined;
   }
 
   private async getAllAmlgFiles(dir: string): Promise<string[]> {
@@ -54,18 +57,18 @@ export class AmalgamDefinitionProvider implements vscode.DefinitionProvider {
     const entries = await fs.promises.readdir(dir, { withFileTypes: true });
 
     for (const entry of entries) {
-        const fullPath = path.join(dir, entry.name);
-        if (entry.isDirectory()) {
-            files.push(...await this.getAllAmlgFiles(fullPath));
-        } else if (entry.isFile() && path.extname(entry.name) === '.amlg') {
-            files.push(fullPath);
-        }
+      const fullPath = path.join(dir, entry.name);
+      if (entry.isDirectory()) {
+        files.push(...(await this.getAllAmlgFiles(fullPath)));
+      } else if (entry.isFile() && path.extname(entry.name) === ".amlg") {
+        files.push(fullPath);
+      }
     }
 
     return files;
   }
 
   private async readFile(filePath: string): Promise<string> {
-      return fs.promises.readFile(filePath, 'utf-8');
+    return fs.promises.readFile(filePath, "utf-8");
   }
-}
\ No newline at end of file
+}