TypeError produces NodeError with "Please open an issue with this stack trace"

[fabiancook]

Version

v17.2.0

Platform

Darwin Fabians-Mac-mini.local 21.1.0 Darwin Kernel Version 21.1.0: Wed Oct 13 17:33:23 PDT 2021; root:xnu-8019.41.5~1/RELEASE_X86_64 x86_64

Subsystem

No response

What steps will reproduce the bug?

By replacing the line here:

https://github.com/virtualstate/x/blob/5e1a4af59fd61b436f02570b1f64ff5a0b90cb79/packages/fringe/src/token.ts#L209

...options?.[TokenAncestor] && ancestor ? (

With

...options[TokenAncestor] && ancestor ? (

And running:

yarn build && node packages/fringe/lib/token.types-test.js

Produces the error.

How often does it reproduce? Is there a required condition?

No response

What is the expected behavior?

The error log:

TypeError: Cannot read properties of undefined (reading 'Symbol(@virtualstate/fringe/token/ancestor)')
 at defineProperties (file:///Volumes/Extreme/Users/fabian/src/virtualstate/x/packages/fringe/lib/token.js:126:23)
 at createToken (file:///Volumes/Extreme/Users/fabian/src/virtualstate/x/packages/fringe/lib/token.js:57:5)
 at Object.createNode (file:///Volumes/Extreme/Users/fabian/src/virtualstate/x/packages/fringe/lib/create-node.js:115:26)
 at flattenChildrenSource (file:///Volumes/Extreme/Users/fabian/src/virtualstate/x/packages/fringe/lib/children.js:154:27)
 at flattenChildrenSource.next (<anonymous>)
 at Object.get [Symbol.iterator] (file:///Volumes/Extreme/Users/fabian/src/virtualstate/x/packages/fringe/lib/create-node.js:454:37)
 at isIterable (file:///Volumes/Extreme/Users/fabian/src/virtualstate/x/node_modules/iterable/dist/core/async-like.js:31:14)
 at isIterableChildren (file:///Volumes/Extreme/Users/fabian/src/virtualstate/x/packages/fringe/lib/children.js:162:12)
 at flattenChildrenSource (file:///Volumes/Extreme/Users/fabian/src/virtualstate/x/packages/fringe/lib/children.js:144:38)
 at flattenChildrenSource.next (<anonymous>)

What do you see instead?

The error log:

node:internal/errors:464
 ErrorCaptureStackTrace(err);
 ^

Error [ERR_INTERNAL_ASSERTION]: Error [ERR_INTERNAL_ASSERTION]: TypeError: Cannot read properties of undefined (reading 'Symbol(@virtualstate/fringe/token/ancestor)')
 at defineProperties (file:///Volumes/Extreme/Users/fabian/src/virtualstate/x/packages/fringe/lib/token.js:126:23)
 at createToken (file:///Volumes/Extreme/Users/fabian/src/virtualstate/x/packages/fringe/lib/token.js:57:5)
 at Object.createNode (file:///Volumes/Extreme/Users/fabian/src/virtualstate/x/packages/fringe/lib/create-node.js:115:26)
 at flattenChildrenSource (file:///Volumes/Extreme/Users/fabian/src/virtualstate/x/packages/fringe/lib/children.js:154:27)
 at flattenChildrenSource.next (<anonymous>)
 at Object.get [Symbol.iterator] (file:///Volumes/Extreme/Users/fabian/src/virtualstate/x/packages/fringe/lib/create-node.js:454:37)
 at isIterable (file:///Volumes/Extreme/Users/fabian/src/virtualstate/x/node_modules/iterable/dist/core/async-like.js:31:14)
 at isIterableChildren (file:///Volumes/Extreme/Users/fabian/src/virtualstate/x/packages/fringe/lib/children.js:162:12)
 at flattenChildrenSource (file:///Volumes/Extreme/Users/fabian/src/virtualstate/x/packages/fringe/lib/children.js:144:38)
 at flattenChildrenSource.next (<anonymous>)
This is caused by either a bug in Node.js or incorrect usage of Node.js internals.
Please open an issue with this stack trace at https://github.com/nodejs/node/issues

 at new NodeError (node:internal/errors:371:5)
 at Function.fail (node:internal/assert:20:9)
 at handleMaxCallStackSize (node:internal/util/inspect:1370:10)
 at formatRaw (node:internal/util/inspect:1013:12)
 at formatValue (node:internal/util/inspect:793:10)
 at formatProperty (node:internal/util/inspect:1681:11)
 at formatRaw (node:internal/util/inspect:1006:9)
 at formatValue (node:internal/util/inspect:793:10)
 at inspect (node:internal/util/inspect:340:10)
 at formatWithOptionsInternal (node:internal/util/inspect:2006:40)
This is caused by either a bug in Node.js or incorrect usage of Node.js internals.
Please open an issue with this stack trace at https://github.com/nodejs/node/issues

 at new NodeError (node:internal/errors:371:5)
 at Function.fail (node:internal/assert:20:9)
 at handleMaxCallStackSize (node:internal/util/inspect:1370:10)
 at formatRaw (node:internal/util/inspect:1013:12)
 at formatValue (node:internal/util/inspect:793:10)
 at inspect (node:internal/util/inspect:340:10)
 at formatWithOptionsInternal (node:internal/util/inspect:2006:40)
 at formatWithOptions (node:internal/util/inspect:1888:10)
 at console.value (node:internal/console/constructor:323:14)
 at console.log (node:internal/console/constructor:359:61){
 code: 'ERR_INTERNAL_ASSERTION'
}

Additional information

I don't actually believe this is a valid bug, but the internal bug asked for me to raise, so I have raised.

[meixg]

A minimal reproducible example:

const a = {
 b: {
 get [Symbol.iterator]() {
 throw Error();
 }
 }
};

console.log(a);

This happens because the userland Error is caught by the internal module:

node/lib/internal/util/inspect.js

Lines 1026 to 1038 in 4cb2a47

	try {
	output = formatter(ctx, value, recurseTimes);
	for (i = 0; i < keys.length; i++) {
	output.push(
	formatProperty(ctx, value, recurseTimes, keys[i], extrasType));
	}
	if (protoProps !== undefined) {
	output.push(...protoProps);
	}
	} catch (err) {
	const constructorName = getCtxStyle(value, constructor, tag).slice(0, -1);
	return handleMaxCallStackSize(ctx, err, constructorName, indentationLvl);
	}

Maybe we can improve this by filtering the userland error?

[cola119]

From my reading @meixg's above minimal example causes an error because of the dynamic Symbol.iterator access at L862.

node/lib/internal/util/inspect.js

Line 862 in a81b4eb

if (value[SymbolIterator] || constructor === null) {

I'm still not sure if @fabiancook's error is happening for the same reason but I'll try to fix it by removing access to Symbol.iterator.

[BridgeAR]

@meixg it is actually a separate issue that you highlight.

I have a local fix for this issue as well.

[avivkeller]

This is no longer reproducible AFAICT.