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318 Commits

Author SHA1 Message Date
Donny/강동윤
0e69890764
feat(es/minifier): Evaluate more literals in comparison (#5976) 
**Description:**

I'll fix the performance issue with a follow-up PR.

**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/4415.
 2022-09-28 08:07:55 +00:00
Austaras
aff4ea5f44
fix(es/minifier): Preserve exports in DCE (#5973) 2022-09-28 05:35:51 +00:00
Donny/강동윤
dcd516d2bd
feat(es/minifier): Ignore more expressions in sequential inliner (#5961) 
**Description:**

We can skip **member access** to `console` as it does not have any side effects.
 2022-09-27 07:45:44 +00:00
Donny/강동윤
48cddc16f6
test(es/minifier): Categorize terser tests (#5960) 
**Description:**

I'm going to focus on rules enabled by default. I updated some tests because our one was better, and postponed `unsafe` tests.
 2022-09-27 15:18:57 +09:00
Austaras
573418fc96
fix(es/resolver): Use a separate mark for the name of FnExpr (#5959) 2022-09-27 14:50:35 +09:00
Donny/강동윤
33a15c8d82
fix(es/minifier): Fix analysis of parameters (#5954) 
**Description:**

Although the author of the issue talked about `@react-pdf/renderer`, it's a bug related to `brotli`, not react pdf renderer.

After investigation, I found that the bug is caused by not marking parameters as initialized. So I fixed the analyzer.

**Related issue:**

 - https://github.com/vercel/next.js/issues/40803.
 2022-09-27 12:19:36 +09:00
Donny/강동윤
9d1974248d
fix(es/minifier): Fix skipping logic of sequential inliner (#5956) 
**Description:**

This PR implements `is_skippable_for_seq` fully.

**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/5935.
 2022-09-26 15:05:52 +00:00
Donny/강동윤
97647861bf
fix(es/minifier): Track aliasing via assignments (#5940) 2022-09-23 14:22:41 +09:00
Donny/강동윤
93964a82ea
test(es/minifier): Remove analysis snapshot (#5939) 
**Description:**

This PR removes analysis snapshots as it disturbs code review process
 2022-09-23 13:14:42 +09:00
Donny/강동윤
7bcaaef4f7
feat(es/minifier): Mangle labels (#5934) 
**Description:**

This PR adds code to mangle labels.
 2022-09-22 23:24:05 +09:00
Donny/강동윤
e16827cc9d
feat(es/minifier): Drop cycles in nested functions (#5933) 2022-09-22 13:54:49 +00:00
Donny/강동윤
5314ac5d02
feat(es/minifier): Use char frequency data for property manglers (#5932) 2022-09-22 22:14:26 +09:00
Donny/강동윤
e9c704182b
feat(es/minifier): Improve analysis of reassignments (#5931) 2022-09-22 10:22:18 +00:00
Donny/강동윤
f2224132c1
fix(es/minifier): Prepend vars when dropping vars in a for loop initializer (#5930) 
**Description:**

The minifier appends initializer of for statements instead of prepending it.

**Related issue:**

- https://github.com/vercel/next.js/discussions/30237#discussioncomment-3704795
 2022-09-22 09:18:41 +00:00
Donny/강동윤
ac7b066d9a
feat(es/minifier): Inline rest parameters of IIFE (#5929) 2022-09-22 06:16:29 +00:00
Donny/강동윤
565bf317f6
feat(es/minifier): Evaluate more expressions (#5926) 2022-09-22 03:53:14 +00:00
Donny/강동윤
19ce2737b1
feat(es/minifier): Collapse let without init (#5909) 
**Description:**

This patch applies the variable collapsing logic for the variables declared with `var` to the variables declared with `let`. This requires some patch about the behavior of visitors about `BlockStmt`, so this patch includes relevant changes.

**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/5696.
 2022-09-21 15:04:29 +00:00
Donny/강동윤
31711e76af
test(es/minifier): Add an execution test for a fixed issue (#5925) 
**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/5914.
 2022-09-21 12:19:14 +00:00
Donny/강동윤
e303f7e853
fix(es/minifier): Fix analysis of assignments (#5924) 
**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/5910
 2022-09-21 11:33:25 +00:00
Donny/강동윤
0b34bcb40e
test(es/minifier): Add a test for a wrong issue (#5923) 2022-09-21 19:52:52 +09:00
Donny/강동윤
fe40d8312b
test(es): Accept arguments (#5916) 
**Description:**

This PR adds a way to provide arguments to `exec_node_js`.
 2022-09-21 16:23:10 +09:00
Donny/강동윤
a9873e505d
perf(es/minifier): Optimize analyzer (#5908) 2022-09-20 08:21:39 +00:00
Donny/강동윤
1df72430a5
perf(es/minifier): Invoke DCE only before the first compression (#5907) 
**Description:**

Invoke DCE only before the first compression. I verified that this patch does not affect the compression rate of the real-world inputs greatly.
 2022-09-20 15:41:26 +09:00
Donny/강동윤
aacf7aaf80
feat(es/minifier): Drop function identifier in a single pass (#5901) 
**Description:**

We only inline function declarations if `ref_count` is 1, so we don't need to preserve the name of the function.

**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/5682.
 2022-09-19 15:07:56 +00:00
Austaras
83c7887600
fix(es/minifier): Remove more pure calls (#5900) 2022-09-19 12:21:15 +00:00
Donny/강동윤
0bbcfe15ee
test(es/minifier): Add a test for a fixed issue (#5897) 2022-09-19 17:25:49 +09:00
Donny/강동윤
4e656af1ec
feat(es/minifier): Drop variable from the sequential inliner (#5896) 
**Description:**

We now drop variable declarations if we are going to eliminate the only usage.

**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/5693.
 2022-09-19 07:40:04 +00:00
IWANABETHATGUY
7d6d04b421
fix(es/codegen): Drop the last comma in an array literal (#5877) 
**Description:**

Drop the last comma in an array literal.

**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/5692.
 2022-09-16 15:48:28 +09:00
Donny/강동윤
c3fa96b21b
fix(es/minifier): Fix unicode handling (#5875) 2022-09-15 14:45:33 +00:00
magic-akari
90d311c042
fix(es/minifier): Fix handling of .toFixed call without an argument (#5868) 2022-09-15 16:00:36 +09:00
Donny/강동윤
991a34e0c2
fix(es/minifier): Remove fake_block while calculating next scope (#5869) 
**Description:**

We now remove `fake_block` mark from `with_ctx`.

**Related issue:**
 - Closes https://github.com/swc-project/swc/issues/5865
 2022-09-15 06:04:47 +00:00
Alexander Akait
7f62fa6227
perf(html): Reduce memory usage (#5867) 2022-09-15 04:17:05 +00:00
Austaras
63fb0c4ad3
feat(es/minifier): Move assign with seq init into seq (#5847) 2022-09-14 12:57:18 +00:00
Donny/강동윤
32f18068ad
fix(es/minifier): Preserve more side effects (#5853) 
**Description:**

We now preserve more side effects.

**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/5680.
 2022-09-14 06:51:56 +00:00
magic-akari
2b2464271a
fix(es/codegen): Remove redundant ; after export default decl (#5851) 2022-09-14 06:07:15 +00:00
Donny/강동윤
a5f7b6946f
fix(es/minifier): Don't replace parameters of IIFE if it's recursive (#5852) 
**Description:**

While investigating, I found that problem is not the analysis of recursive functions. Instead, it was a problem with the IIFE evaluator, which replaces parameters even if it's recursive.

**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/5846
 2022-09-14 05:02:14 +00:00
Donny/강동윤
0284c1bf40
test(es/transforms): Enable tests for fixed issues (#5845) 2022-09-13 10:32:00 +00:00
Alexander Akait
ccd618ce54
perf(html/minifier): Improve performance (#5838) 2022-09-13 14:01:41 +09:00
Austaras
8567a38c4a
feat(es/minifier): Extend inlining of identifiers to multi-usage (#5832) 2022-09-13 03:52:47 +00:00
Donny/강동윤
cfe575e35a
perf(es/minifier): Make expression simplifier stateless and parallel (#5819) 2022-09-11 06:18:44 +00:00
Donny/강동윤
7391cc99b1
perf(css/minifier): Use JsWord instead of &str (#5806) 2022-09-10 07:20:51 +00:00
Donny/강동윤
f11461d3f5
test(es): Enable tests for fixed issues (#5784) 2022-09-08 15:05:39 +00:00
Austaras
ee26337a25
feat(es/minifier): Inline lazily initialized variables (#5737) 
Safety:

For a function-local variable, an expression with side-effects would be a call, including an indirect one with a member expression.

 - If the call is function-local, it will be analyzed by the analyzer and inliner will not work.
 - If the call is not a function-local one, it cannot modify the local variable.
 2022-09-08 08:07:43 +00:00
Donny/강동윤
24b60d2b64
feat(es/minifier): Change order of renaming to align with terser (#5780) 
**Description:**

 - Change the order of renaming to match one of `terser`.
 2022-09-08 05:23:23 +00:00
Donny/강동윤
32a73fbf22
fix(es/minifier): Fix calculation of character frequency (#5772) 2022-09-07 04:46:21 +00:00
Austaras
90852f5aa6
fix(es/minifier): Fix analysis of assignments and classes (#5770) 2022-09-07 03:51:42 +00:00
Donny/강동윤
60ce462215
feat(es/minifier): Align name mangler with terser (#5763) 2022-09-06 21:37:58 +09:00
Austaras
948d708144
fix(es/minifier): Don't drop parameters in an exported function (#5757) 2022-09-06 10:39:23 +09:00
Donny/강동윤
6ba6da62d7
perf(es/minifier): Make dead branch remover parallel (#5734) 2022-09-04 07:33:26 +00:00
Austaras
5b2d024788
feat(es/minifier): Relax requirement for IIFE invokation (#5721) 2022-09-03 07:33:31 +00:00