Bug 293589

Created attachment 475377 [details] The TypeScript file to test the debug crash Uncaught Exception in Web Inspector. Steps to Reproduce: 1. What were you doing? Include setup or other preparations to reproduce the exception. I have a TypeScript file (attached) that I was debugging. I ran 'bun --inspect-brk doublyLinkedList.ts' I stepped into line 171: console.log(list.get(3)). 2. Include explicit, accurate, and minimal steps taken. Do not include extraneous or irrelevant steps. If the commented out lines in get() are uncommented and the last line of get() is commented, then the debugger steps in successfully. 3. What did you expect to have happen? What actually happened? I expected to step into the function without crashing. It seems the direct return of a statement containing an Optional Chaining Operator causes the crash. Uncaught Exceptions: ----------------------- - Uncaught TypeError: Cannot read properties of undefined (reading 'isBefore') (at manifest-yr1khc1r.js:51:272156) ? @ TypeError: Cannot read properties of undefined (reading 'isBefore') ? @ manifest-yr1khc1r.js:51:272156 ? @ manifest-yr1khc1r.js:51:276011) ? @ manifest-yr1khc1r.js:51:279388) ? @ manifest-yr1khc1r.js:51:282794) ? @ manifest-yr1khc1r.js:51:276575) ? @ manifest-yr1khc1r.js:51:278198) ? @ manifest-yr1khc1r.js:51:278783) ? @ manifest-yr1khc1r.js:51:282794) ? @ manifest-yr1khc1r.js:51:277072) ? @ manifest-yr1khc1r.js:51:277266) ----------------------- Notes: Inspected URL: (unknown) Loading completed: true Frontend User Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36