repl: fix prepareStackTrace frames array order

The second parameter of `Error.prepareStackTrace` is an array of
reversed call site frames.

PR-URL: nodejs#50827
Fixes: nodejs#50733
Reviewed-By: Ethan Arrowood <ethan@arrowood.dev>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Geoffrey Booth <webadmin@geoffreybooth.com>

lib/repl.js

@@ -45,23 +45,21 @@
 const {
   ArrayPrototypeAt,
   ArrayPrototypeFilter,
-  ArrayPrototypeFindIndex,
+  ArrayPrototypeFindLastIndex,
   ArrayPrototypeForEach,
   ArrayPrototypeIncludes,
   ArrayPrototypeJoin,
   ArrayPrototypeMap,
   ArrayPrototypePop,
   ArrayPrototypePush,
   ArrayPrototypePushApply,
-  ArrayPrototypeReverse,
   ArrayPrototypeShift,
   ArrayPrototypeSlice,
   ArrayPrototypeSome,
   ArrayPrototypeSort,
-  ArrayPrototypeSplice,
   ArrayPrototypeUnshift,
   Boolean,
-  Error,
+  Error: MainContextError,
   FunctionPrototypeBind,
   JSONStringify,
   MathMaxApply,
@@ -630,10 +628,10 @@ function REPLServer(prompt,
         if (self.breakEvalOnSigint) {
           const interrupt = new Promise((resolve, reject) => {
             sigintListener = () => {
-              const tmp = Error.stackTraceLimit;
-              if (isErrorStackTraceLimitWritable()) Error.stackTraceLimit = 0;
+              const tmp = MainContextError.stackTraceLimit;
+              if (isErrorStackTraceLimitWritable()) MainContextError.stackTraceLimit = 0;
               const err = new ERR_SCRIPT_EXECUTION_INTERRUPTED();
-              if (isErrorStackTraceLimitWritable()) Error.stackTraceLimit = tmp;
+              if (isErrorStackTraceLimitWritable()) MainContextError.stackTraceLimit = tmp;
               reject(err);
             };
             prioritizedSigintQueue.add(sigintListener);
@@ -679,23 +677,23 @@ function REPLServer(prompt,
         if (typeof stackFrames === 'object') {
           // Search from the bottom of the call stack to
           // find the first frame with a null function name
-          const idx = ArrayPrototypeFindIndex(
-            ArrayPrototypeReverse(stackFrames),
+          const idx = ArrayPrototypeFindLastIndex(
+            stackFrames,
             (frame) => frame.getFunctionName() === null,
           );
           // If found, get rid of it and everything below it
-          frames = ArrayPrototypeSplice(stackFrames, idx + 1);
+          frames = ArrayPrototypeSlice(stackFrames, 0, idx);
         } else {
           frames = stackFrames;
         }
         // FIXME(devsnek): this is inconsistent with the checks
         // that the real prepareStackTrace dispatch uses in
         // lib/internal/errors.js.
-        if (typeof Error.prepareStackTrace === 'function') {
-          return Error.prepareStackTrace(error, frames);
+        if (typeof MainContextError.prepareStackTrace === 'function') {
+          return MainContextError.prepareStackTrace(error, frames);
         }
-        ArrayPrototypePush(frames, error);
-        return ArrayPrototypeJoin(ArrayPrototypeReverse(frames), '\n    at ');
+        ArrayPrototypeUnshift(frames, error);
+        return ArrayPrototypeJoin(frames, '\n    at ');
       });
       decorateErrorStack(e);
 

test/parallel/test-repl-pretty-custom-stack.js

@@ -42,8 +42,9 @@ const origPrepareStackTrace = Error.prepareStackTrace;
 Error.prepareStackTrace = (err, stack) => {
   if (err instanceof SyntaxError)
     return err.toString();
-  stack.push(err);
-  return stack.reverse().join('--->\n');
+  // Insert the error at the beginning of the stack
+  stack.unshift(err);
+  return stack.join('--->\n');
 };
 
 process.on('uncaughtException', (e) => {
@@ -78,3 +79,10 @@ const tests = [
 ];
 
 tests.forEach(run);
+
+// Verify that the stack can be generated when Error.prepareStackTrace is deleted.
+delete Error.prepareStackTrace;
+run({
+  command: 'throw new TypeError(\'Whoops!\')',
+  expected: 'Uncaught TypeError: Whoops!\n'
+});