Fix all tsc error in utils.ts

Author: tmr232

src/frontend/src/lib/utils.ts

@@ -47,7 +47,7 @@ export async function initializeParsers(): Promise<Parsers> {
 }
 
 export function getFirstFunction(tree: Parser.Tree): Parser.SyntaxNode | null {
-  let functionNode: Parser.SyntaxNode = null;
+  let functionNode: Parser.SyntaxNode | null = null;
   const cursor = tree.walk();
 
   const funcTypes = [
@@ -93,7 +93,7 @@ export interface TestResults {
 export function runTest(record: TestFuncRecord): TestResults[] {
   const tree = parsers[record.language].parse(record.code);
   const testFunc: TestFunction = {
-    function: getFirstFunction(tree),
+    function: getFirstFunction(tree) as Parser.SyntaxNode,
     language: record.language,
     name: record.name,
     reqs: record.reqs,
@@ -125,8 +125,8 @@ export function processRecord(
 ): { dot?: string; ast: string; svg?: string; error?: Error } {
   const { trim, simplify, verbose, flatSwitch } = options;
   const tree = parsers[record.language].parse(record.code);
-  const functionSyntax = getFirstFunction(tree);
   const builder = newCFGBuilder(record.language, { flatSwitch });
+  const functionSyntax = getFirstFunction(tree) as Parser.SyntaxNode;
 
   const ast = functionSyntax.toString();
 
@@ -135,7 +135,10 @@ export function processRecord(
   try {
     cfg = builder.buildCFG(functionSyntax);
   } catch (error) {
-    return { ast, error };
+    return {
+      ast,
+      error: error instanceof Error ? error : new Error(`${error}`),
+    };
   }
 
   if (!cfg) return { ast };

tsconfig.json

@@ -1,8 +1,6 @@
 {
   "compilerOptions": {
-    "lib": [
-      "ESNext"
-    ],
+    "lib": ["ESNext"],
     "target": "ESNext",
     "module": "ESNext",
     "moduleDetection": "force",
@@ -19,12 +17,8 @@
     "noFallthroughCasesInSwitch": true,
     "forceConsistentCasingInFileNames": true,
     "paths": {
-      "vscode": [
-        "./mocks/vscode.ts"
-      ]
-    },
+      "vscode": ["./mocks/vscode.ts"]
+    }
   },
-  "exclude": [
-    "./webview-content"
-  ]
-}
+  "exclude": ["./webview-content"]
+}