perf(css/ast): Reduce token size

[alexander-akait]

Description:

This is one of the performance improvements PR

Gnuplot not found, using plotters backend
css/lexer/bootstrap_5_1_3                                                                             
                        time:   [5.0974 ms 5.1213 ms 5.1480 ms]
                        change: [-11.146% -10.572% -10.024%] (p = 0.00 < 0.05)
                        Performance has improved.
Found 10 outliers among 100 measurements (10.00%)
  4 (4.00%) high mild
  6 (6.00%) high severe

css/lexer/foundation_6_7_4                                                                             
                        time:   [4.2814 ms 4.2999 ms 4.3219 ms]
                        change: [-6.3111% -4.5331% -2.8664%] (p = 0.00 < 0.05)
                        Performance has improved.
Found 8 outliers among 100 measurements (8.00%)
  1 (1.00%) high mild
  7 (7.00%) high severe

css/lexer/tailwind_3_1_1                                                                            
                        time:   [802.97 us 807.05 us 812.42 us]
                        change: [-10.144% -7.5341% -4.9534%] (p = 0.00 < 0.05)
                        Performance has improved.
Found 7 outliers among 100 measurements (7.00%)
  7 (7.00%) high severe

Parser was improved too

BREAKING CHANGE:

Yes

Related issue (if exists):

No

[alexander-akait]

I think we can box more things

[kdy1]

I think this is too much boxing.
Are you trying to optimive memmove?

[alexander-akait]

I tried different things, lexer is faster when we box tokens, because we use them in AST, i.e. ComponentValues::PreservedTokens, so memory usage was improved good, parser performance unfortunately was not very improved

[kdy1]

Edit: We need to box Url, Dimension, BadUrl

[kdy1]

Thanks!

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swc-bump:

• swc_css_ast --breaking

[swc-bot]

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