endangeredmassa / format-error Goto Github PK

It would be nice if format-error could survive being handed potentially circular data structures.

TypeError: Converting circular structure to JSON
    at Object.stringify (native)
    at makeSimple (/.../node_modules/format-error/index.js:36:28)
    at format (/.../node_modules/format-error/index.js:39:21)
    ...

I am fairly new to ES6 syntax and the specs. But I believe that you need to scan the prototype chain in order to get the property accessors since by the specs, stack and message are attached to their class prototype so the function getOwnPropertyDescriptors (here) will not have access to the prototype chain to access the base class Error@stack property. In other words, we have to assume the derived classes also have their own stack property descriptors if entire chain isn't scanned.

I was working on chaining causes with ES6 when I noticed this incompatibility. So, I have the script scanning the prototype chain. It is coupled with test case for here: https://github.com/bluejamesbond/TraceError.js/blob/master/tests/throw-test.js#L7 (the test case should identify 1 valid property namely: Error; the test will be updated soon to show that aspect)

Referencing mathew-kurian/TraceError.js#1