feat(es/minifier): Drop redundant function parameters

[levi-nz]

Description:
Trailing parameters in functions/arrow expressions can be dropped if they're not referenced inside the function body without introducing side effects. e.g. function f(a, b, c) {f(a);} -> function f(a) {f(a);}.

This simply iterates (reverse) through the parameters and once it encounters a parameter that is used, it stops and drops the ones it found. If no referenced parameters are found then all parameters can be dropped.

BREAKING CHANGE:

Related issue (if exists):

[changeset-bot]

⚠️ No Changeset found

Latest commit: 8e8b994

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[levi-nz]

This might break TypeScript interfaces, will have to test

[codspeed-hq]

CodSpeed Performance Report

Merging #9636 will degrade performances by 3.63%

_{Comparing levi-nz:optimize-function-parameters (8e8b994) with main (b83c44f)}

Summary

❌ 1 regressions
✅ 193 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	main	levi-nz:optimize-function-parameters	Change
❌	es/full/parser	1.5 ms	1.5 ms	-3.63%

[kdy1]

I think this should check for option about function.length

[levi-nz]

I think this should check for option about function.length

I think this should be a config option if that's what you're referring to, but I'm not sure what you're referring to regarding function.length

[magic-akari]

I think this should check for option about function.length

I think this should be a config option if that's what you're referring to, but I'm not sure what you're referring to regarding function.length

It's the keep_fargs option in Terser.

[NullVoxPopuli]

anything blocking this? <3

[levi-nz]

anything blocking this? <3

Not at the moment. I should be able to get around to finishing this some time this week.