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ad960c76c0
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112 Commits

Author SHA1 Message Date
Donny/강동윤
ad960c76c0
feat(es/minifier): Detect type of .length (#6120) 
**Description:**

This PR updates minifier to detect the type of `xxx.length` if possible.
 2022-10-11 23:06:58 +00:00
Austaras
657e5b3111
feat(es/minifier): Inline more lazily initialized vars (#6089) 2022-10-10 09:53:50 +09:00
Donny/강동윤
b0c57458c8
feat(es/minifier): Mark ref to fn as non-call in alias analyzer (#6088) 2022-10-09 09:21:54 +09:00
Donny/강동윤
9ce3df091f
feat(es/minifier): Distinguish calls in alias analyzer (#6080) 
**Description:**

This PR improves the alias analyzer by distinguishing call and reference, thus reducing the number of identifiers.

---

Co-authored-by: Justin Ridgewell <justin@ridgewell.name>
 2022-10-08 03:15:18 +00:00
IWANABETHATGUY
8003dc8563
feat(es/codegen): Remove the trailing comma of binding patterns (#6078) 2022-10-07 16:45:20 +09:00
Austaras
c9427f1ec4
fix(es/minifier): Improve infection analysis (#6044) 2022-10-06 18:12:09 +09:00
Donny/강동윤
38df5978c1
fix(es/minifier): Mark delete as a property mutation (#6063) 
**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/6004.
 2022-10-06 04:47:58 +00:00
Donny/강동윤
d65fba134d
fix(es/minifier): Fix infection analysis of sequential inliner (#6053) 
**Description:**

This PR fixes the callee issue by fixing the infection analyzer.

**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/6047
 2022-10-06 02:46:22 +00:00
Donny/강동윤
c5fb774487
fix(es/minifier): Don't skip unresolved identifiers (#6050) 
**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/6049
 2022-10-05 11:44:51 +00:00
Austaras
c4850997a2
feat(es/minifier): Inline vars initialized before the declaration (#6027) 2022-10-03 08:58:38 +00:00
Donny/강동윤
877936f626
feat(es/minifier): Clone trivial literals in sequential inliner (#6005) 
**Description:**

As our minifier is two-pass by default, this is enough.

At the first pass, we inline all numeric literals using sequential inliner, and minifier can then inline constants correctly in the second pass.
 2022-10-03 07:20:48 +00:00
Donny/강동윤
2b627524ac
feat(es/minifier): Ignore return values of ignored IIFEs (#6020) 
**Description:**

As we are not using the return value of the function, we can call `ignore_return_value` on the argument of the return statements of IIFE.
 2022-10-02 20:01:56 +09:00
Austaras
61807abf6e
feat(es/minifier): Inline function calls in more cases (#6010) 2022-10-01 18:18:45 +09:00
Donny/강동윤
286334c4d0
feat(es/minifier): Drop vars from sequential inliner (#5993) 
**Description:**

This PR renames `CloningMultiReplacer` to `Finalizer` and makes it handle the removal of unused variables. Also, this PR improves the sequential inliner so we can drop variables within a single pass.
 2022-09-30 09:43:31 +00:00
Donny/강동윤
aeb7f300a8
feat(es/minifier): Invoke sequential inliner for inlined IIFEs (#5991) 
**Description:**

Inlined IIFEs have the exact pattern sequential inliner wants, so it's good to invoke it.
 2022-09-29 11:03:06 +00:00
Donny/강동윤
f8358fbe2b
fix(es/minifier): Remove wrong variable joiner pass (#5992) 
**Description:**

We had two passes for joining variables. This PR removes one in the full optimizer, which is wrong.

**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/5989.
 2022-09-29 19:11:18 +09:00
Austaras
1a11cfd46f
feat(es/minifier): Improve fn-local analysis for better inlining (#5955) 2022-09-29 14:16:28 +09:00
Donny/강동윤
c411e5d552
feat(es/minifier): Drop more variables while invoking IIFE (#5987) 2022-09-29 02:15:56 +00:00
Donny/강동윤
8c4873f81e
test(es/minifier): Remove mangle-only snapshots (#5979) 
**Description:**

We don't have to store snapshots of all fixtures.
 2022-09-28 21:35:52 +09:00
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
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
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
e9c704182b
feat(es/minifier): Improve analysis of reassignments (#5931) 2022-09-22 10:22:18 +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
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
a9873e505d
perf(es/minifier): Optimize analyzer (#5908) 2022-09-20 08:21:39 +00:00
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
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
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
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
7391cc99b1
perf(css/minifier): Use JsWord instead of &str (#5806) 2022-09-10 07:20:51 +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