Tips for component developers
Table of contents
Build in Debug mode
Mozilla developers are very generous on asserts, but these will only trigger on Debug configuration.
There are a lot of them and they will pick up most of the errors in handling SpiderMonkey API.
Note: to use debug foo_spider_monkey_panel.dll you need corresponding SpiderMonkey debug binaries.
Test with GCZeal
If you make some changes related to JS API, don’t forget to test them with GCZeal.
GCZeal option can be enabled in Preferences > Advanced > Display > Spider Monkey Panel > GC > Zeal > Enable.
Note: this option is only available in Debug build.
This option makes GC very zealous - it will try to GC everything every few allocations (frequency is set in Preferences > Advanced > Display > Spider Monkey Panel > GC > Zeal > Frequency).
This WILL make component much slower, but it will also allow you to test for and reproduce GC related crashes.