Remove internal tokenization during parse

[blakeembrey]

Removes the internal LexToken created during parse, reducing the memory and performance overhead of generating the objects.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.74%. Comparing base (9a78879) to head (2215cd0).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #435   +/-   ##
=======================================
  Coverage   99.74%   99.74%           
=======================================
  Files           1        1           
  Lines         392      393    +1     
  Branches      150      156    +6     
=======================================
+ Hits          391      392    +1     
  Misses          1        1           

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[blakeembrey]

Perf on main:

 ✓ src/index.bench.ts > parse 680ms
     name                   hz     min     max    mean     p75     p99    p995    p999     rme  samples
   · parsing paths  407,427.20  0.0021  1.8551  0.0025  0.0023  0.0042  0.0057  0.0404  ±1.01%   203714

Perf on PR:

 ✓ src/index.bench.ts > parse 696ms
     name                   hz     min     max    mean     p75     p99    p995    p999     rme  samples
   · parsing paths  515,135.45  0.0016  8.4582  0.0019  0.0018  0.0036  0.0052  0.0168  ±3.35%   257568

[blakeembrey]

Also a bundle size reduction from 1.98 kB to 1.93 kB