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25 Commits

Author SHA1 Message Date
Donny/강동윤
de6effc6e1
feat(es/minifier): Drop more unused vars (#3656) 2022-02-21 04:35:56 +00:00
Donny/강동윤
d2c94416a8
feat(es/minifier): Treat !0 as a literal while inlining (#3631) 2022-02-19 17:33:36 +09:00
Donny/강동윤
ac1d4058f2
fix(es/minifier): Fix analyzer (#3557) 
swc_ecma_utils:
 - `collect_decls`: Support paramters of arrow expressions.

swc_ecma_minifier:
 - `analyzer`: Fix `has_property_mutation`.
 2022-02-14 15:47:16 +09:00
Donny/강동윤
a7f0e84bbf
feat(es/minifier): Drop useless assignments (#3528) 
testing:
 - Allow skipping diff using an environment variable `DIFF`.

swc_ecma_minifier:
 - `pure`: Drop useless assignemnts.
 2022-02-11 08:43:48 +00:00
Donny/강동윤
292add7d26
fix(es/minifier): Make sequences less aggressive (#3480) 
swc_ecma_minifier:
 - `sequences`: Abort on RHS contains the left id.
 2022-02-08 19:10:22 +09:00
Donny/강동윤
5812c3c10f
fix(es/minifier): Fix codemirror (#3462) 
swc_ecma_minifier:
 - Mark for in/of loops as executed multiple times.
 - Check captured identifiers while invoking IIFE.
 2022-02-07 11:11:53 +09:00
Donny/강동윤
68e9017376
fix(es/minifier): Improve minifier (#3350) 
swc_ecma_transforms_optimization:
 - `expr_simplifier`: Track more changes.

swc_ecma_minifier:
 - Analyze after applying the pure optimizer.
 - Preserve access to a variable not in scope.
 - `compress`: Remove string literal if it was not a directive.
 - `pure/collapse_vars`: Merge vars declared in the first statement into one with initializers if `collapse_vars` and `join_vars` are enabled.
 - `unused`: Use `usage_count` instead of `ref_count`.
 - `unused`: Fix dropping rule for member expressions.
 - `unused`: Fix dropping rule for declarations.
 - `hoist_props`: Preserve exported items.
 2022-01-27 15:36:22 +09:00
Donny/강동윤
d52a1f3899
fix(es/minifier): Don't inline a var if the initializer is reassigned (#3333) 
swc_ecma_minifier:
 - Consider reassignment to initializer while inlining a variable.
 2022-01-21 14:01:20 +09:00
Donny/강동윤
4f23d651d1
fix(es/minifier): Consider capturing while inlining (#3322) 
swc_ecma_minifier:
 - Don't inline functions if it captures the environment.
 2022-01-21 10:24:41 +09:00
Donny/강동윤
57204e39cd
fix(es/minifier): Don't inline functions used as arguments (#3320) 
swc_ecma_minifier:
 - Preserve a variable initialized with a function expression if it's used as an argument.
 2022-01-20 16:06:23 +09:00
Donny/강동윤
1aa494b1c0
fix(es/minifier): Fix logic for checking arguments (#3313) 
swc_ecma_minifier:
 - Don't mark `arguments` in nested scope as a inline blocker.
 2022-01-19 17:39:24 +09:00
Donny/강동윤
8e796cdc0a
fix(es/minifier): Don't emit invalid code (#3302) 
swc_ecma_minifier:
 - Add lots of debug assertions for invalid codes.
 - Remove all invalid AST nodes eagerly.
 - `pure`: Normalize `PatOrExpr`.
 - `analyzer`: Handle `PatOrExpr` correctly.
 2022-01-18 20:52:21 +09:00
Donny/강동윤
210ecf83bb
feat(es/minifier): Drop more expressions from parallel optimizer (#3303) 
swc_ecma_minifier:
 - `pure`: Implement more rule for dropping useless expressions.
 2022-01-18 16:45:47 +09:00
Donny/강동윤
b55ae4b312
fix(es/minifier): Fix analysis of unary expressions (#3286) 
swc_ecma_minifier:
 - Mark update as usage and assignment. (Closes #3265)
 2022-01-17 14:28:35 +09:00
Donny/강동윤
efd86715c9
fix(es/minifier): Preserve side effects in correct position (#3263) 
swc_ecma_minifier:
 - Add `fake_block` mark.
 - Inject statements for side effects from `visit_mut_stmt` instead of `visit_mut_stmt_likes`. (Closes #2926)
 2022-01-14 16:36:48 +09:00
Donny/강동윤
74fd353053
fix(es/minifier): Fix bugs (#3238) 
swc_ecma_minifier:
 - `collapse_vars`: Respect `mutated`. (Closes #2679)
 - Add a test for https://github.com/vercel/next.js/issues/31084.
 2022-01-12 16:57:54 +09:00
Austaras
cdb46cfb91
fix(es/hygiene): Visit computed properties in usage analyzer (#3217) 2022-01-09 15:42:19 +09:00
Donny/강동윤
69b5f799f3
fix(es/minifier): Disable inlining of expressions from collapse_vars (#3200) 
swc_ecma_minifier:
 - `collapse_vars`: Disable for member expressions. (Closes #2614)
 - `sequences`: Respect `inline_prevented`.
 2022-01-06 20:49:10 +09:00
Donny/강동윤
1c1c9f0eae
fix(es/minifier): Fix bugs (#2955) 
swc_ecma_minifier:
 - Improve the script for extracting inputs from next.js app.
 - Ensure the name is removed on inlining.
 - Respect `inline_prevented`.
 2022-01-05 05:12:52 +09:00
magic-akari
52961804d1
feat(es/codegen): Make the output for empty objects and empty statements pretty (#3171) 2022-01-03 05:54:58 +09:00
Donny/강동윤
a81661c74a
perf(es/hygiene): Fix performance bug (#3090) 
swc_ecma_transforms_base:
 - `hygiene`: Skip checking a symbol if we are sure that it will be discarded.

swc_ecma_laoder:
 - Optimize `NodeModulesResolver` by trying `.js` first.
 2021-12-21 23:52:13 +09:00
David Sherret
beb2c73c2c
fix(swc/hygiene): Prefer not renaming top level variables (#2940) 
swc_ecma_transforms_base:
 - `hygiene`: Use concept of depth to prevent renaming top level nodes.
 2021-12-04 01:55:27 +09:00
Donny/강동윤
fa342a0067
fix(es/minifier): Fix bugs (#2779) 
swc_ecma_minifier:
 - Don't optimize `1 / t == -1 / 0` as `!1`.
 - Don't optimize `e === -1 / 0` as false.
 - Don't inline string literals in arguments, if it's used multiple time. (https://github.com/vercel/next.js/issues/31291)
 2021-11-20 17:06:18 +09:00
Donny/강동윤
f2c67b8caf
fix(es/minifier): Don't inline string literals if it's used multiple time (#2748) 
swc_ecma_minifier:
 - Don't inline strings because it's simple.
 - Inline short strings.
 2021-11-15 14:03:03 +09:00
Donny/강동윤
2b2f6955f2
refactor: Flatten ecmascript (#2708) 2021-11-10 19:00:54 +09:00