IPVGO: Improve type checking and documentation (#2028)

src/Netscript/NetscriptHelpers.tsx

@@ -73,6 +73,7 @@ export const helpers = {
   positiveSafeInteger,
   positiveNumber,
   scriptArgs,
+  boolean,
   runOptions,
   spawnOptions,
   argsToString,
@@ -181,6 +182,14 @@ function scriptArgs(ctx: NetscriptContext, args: unknown) {
   return args;
 }
 
+/** Converts the provided value for v to a boolean, throwing if it is not  */
+function boolean(ctx: NetscriptContext, argName: string, v: unknown): boolean {
+  if (typeof v !== "boolean") {
+    throw errorMessage(ctx, `${argName} must be a boolean, was ${v}`, "TYPE");
+  }
+  return v;
+}
+
 function runOptions(ctx: NetscriptContext, threadOrOption: unknown): CompleteRunOptions {
   const result: CompleteRunOptions = {
     threads: 1 as PositiveInteger,