This rule requires adding a new set of rules, tslint-etc.
no-unused-declaration used to be available in tslint:recommended but was
deprecated when --noUnusedVariables was added to typescript. The problem
with using TypeScript's --noUnusedVariables is that it turns unused
declarations into an error and prevents compilation, which isn't fun
when you're just prototyping things.
One of the possible problems of #1184 (firefox freezing periodically
with Tridactyl enabled) is that Tridactyl uses too much RAM, which could
cause Firefox to attempt to GC it from time to time.
One easy optimisation to try to reduce this problem is to use singletons
for metadata when possible (VoidType, AnyType...).
According to my measurements, this saves the allocation of 933 objects,
which amounted to ~0.03MB. Multiply this by 40 tabs and you get about
1.20MB saved, the space of a whole 1980-era floppy disk.
Before this commit, the compiler pass that generated metadata for
settings didn't generate informetion precise enough to be used to
validate settings that existed in objects (e.g. `logging.cmdline`).
This resulted in no typechecking being done for these settings (e.g.
`:set logging.cmdline 1` would not throw any errors). This commit fixes
that.
This commit makes the compiler pass use different classes in order to
represent the metadata. This enables adding per-class toString/convert
functions. This enables easy type checking and conversion in the `:set`
excmd.
