TypeError: Cannot assign to read only property 'Symbol(Symbol.toStringTag)' of object '#<WeakMap>'

[sainnhe]

Hi, thanks for your work. I'm using a nodejs based application named coc-explorer, which is a vim extension, but I encountered a bug:

2024-05-27T22:24:39.197 ERROR (pid:115475) [extension-stat] - Error on parse json file /home/sainnhe/.local/share/nvim/coc/extensions/package.json TypeError: Cannot assign to read only property 'Symbol(Symbol.toStringTag)' of object '#<WeakMap>'
    at getRawTag (/home/sainnhe/.local/share/nvim/coc/extensions/node_modules/coc-explorer/lib/index.js:6127:27)
    at baseGetTag (/home/sainnhe/.local/share/nvim/coc/extensions/node_modules/coc-explorer/lib/index.js:6159:64)
    at Object.<anonymous> (/home/sainnhe/.local/share/nvim/coc/extensions/node_modules/coc-explorer/lib/index.js:7314:292)
    at Module.<anonymous> (/home/sainnhe/.local/share/nvim/plugins/coc.nvim/build/index.js:77963:28)
    at Module._extensions..js (node:internal/modules/cjs/loader:1427:10)
    at Module.load (node:internal/modules/cjs/loader:1206:32)
    at Module._load (node:internal/modules/cjs/loader:1022:12)
    at Module.require (node:internal/modules/cjs/loader:1231:19)
    at Object.sandboxRequire [as require] (/home/sainnhe/.local/share/nvim/plugins/coc.nvim/build/index.js:78002:42)
    at createExtension (/home/sainnhe/.local/share/nvim/plugins/coc.nvim/build/index.js:78035:33)

It seems to be a bug of lodash, since the content of /home/sainnhe/.local/share/nvim/coc/extensions/node_modules/coc-explorer/lib/index.js:6127:27 is as follows:

// node_modules/lodash-es/_getRawTag.js
var objectProto = Object.prototype;
var hasOwnProperty = objectProto.hasOwnProperty;
var nativeObjectToString = objectProto.toString;
var symToStringTag = Symbol_default ? Symbol_default.toStringTag : void 0;
function getRawTag(value) {
  var isOwn = hasOwnProperty.call(value, symToStringTag), tag = value[symToStringTag];
  try {
    value[symToStringTag] = void 0;
    var unmasked = true;
  } catch (e2) {
  }
  var result = nativeObjectToString.call(value);
  if (unmasked) {
    if (isOwn) {
      value[symToStringTag] = tag;
    } else {
      delete value[symToStringTag];
    }
  }
  return result;
}
var getRawTag_default = getRawTag;

Could you have a look at this bug? Thanks!

For more information weirongxu/coc-explorer#584

[sainnhe]

I can confirm that this bug is caused by line:

value[symToStringTag] = void 0;

The source code is located in tag 4.17.21-es

lodash/_getRawTag.js

Lines 26 to 44 in 11eb817

	function getRawTag(value) {
	var isOwn = hasOwnProperty.call(value, symToStringTag),
	tag = value[symToStringTag];
	try {
	value[symToStringTag] = undefined;
	var unmasked = true;
	} catch (e) {}
	var result = nativeObjectToString.call(value);
	if (unmasked) {
	if (isOwn) {
	value[symToStringTag] = tag;
	} else {
	delete value[symToStringTag];
	}
	}
	return result;
	}

Seems like this property is read-only and cannot be altered.

[sainnhe]

After some investigations, I find that this bug seems to be caused by fedora linux package (I'm using nodejs package and the version is 20.12.2). The code is placed in a try-catch statement and should be catched by node, but it didn't.

I tried the official binary release on nodejs website and this issue doesn't exist.

[sainnhe]

Confirmed this is a packaging issue in fedora. Closed.