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442 Commits

Author SHA1 Message Date
Donny/강동윤
9752b43f94
fix(es/minifier): Use unsafe option for arrow => method (#6521) 
**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/6504.
 - https://github.com/vercel/next.js/issues/43208.
 2022-11-29 05:23:55 +00:00
Donny/강동윤
27ae59e77b
fix(es/minifier): Make sequential inliner respect resolution order (#6509) 
**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/6491.
 2022-11-29 04:50:15 +00:00
Donny/강동윤
b394f9f1d3
fix(es/minifier): Don't drop used variables from sequential inliner (#6520) 
**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/6510.
 2022-11-29 04:12:11 +00:00
HeYunfei
8d906b45e5
fix(es/minifier): Preserve classes with side effects in static fields (#6480) 2022-11-24 09:43:00 +00:00
HeYunfei
9154bbc111
fix(es/minifier): Avoid dropping statements which has side-effects (#6476) 2022-11-20 00:26:52 +00:00
Donny/강동윤
15ad2c2568
fix(es/minifier): Abort inliner on fn declarations used multiple time (#6473) 
**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/6463.
 2022-11-18 07:53:13 +00:00
HeYunfei
dabea71c44
fix(es/minifier): Preserve unused imported specifiers (#6458) 2022-11-17 00:52:19 +00:00
Donny/강동윤
bb544ba2f5
fix(es/minifier): Fix code for dropping unreachable statements (#6429) 
**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/6405.
 2022-11-15 07:00:14 +00:00
Donny/강동윤
99934b09f7
fix(es/minifier): Change the default of mangle.toplevel to false (#6439) 2022-11-15 02:28:38 +00:00
Donny/강동윤
5fd7ab87b6
fix(es/minifier): Preserve op of the op-assignments in seq inliner (#6428) 
**Description:**


**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/6407.
 2022-11-15 00:22:06 +00:00
Donny/강동윤
81a4bb304a
fix(es/compat): Fix span hygiene of function naming pass (#6345) 
**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/6344.
 2022-11-14 06:03:09 +00:00
Donny/강동윤
dd797f7f15
fix(es/minifier): Don't drop an inlined parameter as a duplicate (#6293) 2022-11-02 01:57:15 +00:00
Donny/강동윤
5d52ae971e
feat(es/minifier): Implement trivial optimizations (#6256) 
**Description:**

1. Evaluate `Number.toString()`.
2. Mark some terser tests as passing where our output is better.
 2022-11-02 01:21:32 +00:00
Donny/강동윤
655f6744c5
fix(es/minifier): Fix infinite loop (#6300) 
**Related issue:**

 - https://github.com/vercel/next.js/issues/42171.
 2022-11-01 16:32:52 +00:00
Donny/강동윤
4eab2ed2fc
fix(es/minifier): Don't inline regex for IIFEs (#6283) 
**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/6279.

Co-authored-by: Justin Ridgewell <justin@ridgewell.name>
 2022-10-29 00:02:32 +00:00
Donny/강동윤
0376da73c6
test(es/minifier): Add a test for ?? operator (#6282) 
**Related issue:**

 - https://github.com/vercel/next.js/issues/41992.
 2022-10-28 08:00:21 +00:00
Austaras
8c1ac686cb
fix(es/minifier): Don't ignore nullish coalescing (#6272) 2022-10-28 02:00:47 +00:00
Donny/강동윤
743a1aab4f
feat(es/minfiier): Compute more with sequential inliner (#6169) 2022-10-27 00:50:52 +00:00
Austaras
1cd7f617f9
feat(es/minifier): Inline a lazily initialized var if it's used once (#6237) 2022-10-26 06:02:22 +00:00
Donny/강동윤
86e265a024
feat(es/minifier): Support more statements in seqential inliner (#6248) 
**Description:**

We now inline into the discriminant of a switch statement and into the initializer of for/for-in/for-of statements.
 2022-10-26 13:37:10 +09:00
Donny/강동윤
01edb4fff4
test(es/minifier): Organize terser tests (#6247) 2022-10-25 05:12:30 +00:00
Donny/강동윤
ec9a80aae0
feat(es/minifier): Respect options (#6245) 2022-10-25 04:00:16 +00:00
Donny/강동윤
48bb0cc51d
fix(es/minifier): Fix collapse_vars (#6235) 
**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/6217
 2022-10-23 13:43:10 +09:00
Donny/강동윤
e9d421bd95
fix(es/minifier): Preserve this in more cases (#6226) 
**Related issue (if exists):**

 - Closes https://github.com/swc-project/swc/issues/6175.
 - Closes https://github.com/swc-project/swc/issues/6137.

Co-authored-by: Justin Ridgewell <justin@ridgewell.name>
 2022-10-21 09:07:00 +00:00
Donny/강동윤
780b5de678
fix(es/minifier): Fix detection of direct eval (#6215) 2022-10-21 12:18:10 +09:00
Donny/강동윤
ea03ce1a82
refactor(es/minifier): Don't create invalid nodes (#6191) 
**Description:**

A sequential expression should have at leat two elements.
 2022-10-21 00:33:40 +00:00
Donny/강동윤
725b1185f3
test(es/minifier): Add a test for a fixed issue (#6218) 
**Related issue (if exists):**

 - Closes https://github.com/swc-project/swc/issues/6217.
 2022-10-20 19:26:27 +00:00
Donny/강동윤
cc848db80e
feat(es/minifier): Mark more expressions as pure (#6204) 2022-10-20 05:06:32 +00:00
Donny/강동윤
12443db39a
feat(es/minifier): Merge functions using sequential inliner (#6148) 2022-10-20 02:24:09 +00:00
Donny/강동윤
842abd4575
fix(es/minifier): Remove wrong rule (#6201) 
**Related issue:**

 - https://github.com/vercel/next.js/issues/41527.
 2022-10-19 02:14:38 +00:00
Donny/강동윤
f2e8f98d38
feat(es/minifier): Skip function declarations in sequential inliner (#6147) 2022-10-18 02:51:05 +00:00
Donny/강동윤
3f0fcf4fa9
feat(es/minifier): Make sequential inliner self-repeat (#6168) 2022-10-18 02:13:39 +00:00
Donny/강동윤
aec5cdacc6
fix(es/minifier): Preserve this of tagged template literals (#6165) 
**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/6146
 2022-10-15 09:11:20 +00:00
Austaras
b40d486253
fix(es/minifier): Consider function body cost while inlining function (#5342) 2022-10-15 05:47:56 +00:00
Donny/강동윤
6d0ca05cb5
fix(es/minifier): Fix ordering issue of analyzer (#6150) 
**Description:**

This is the groundwork for a parallel analyzer. This PR fixes the ordering issue of the analyzer so that the analyzer works identically regardless of the visit order. This patch contains some improvements because previously, we mixed `.and_modify()` and `.or_default()`.
 2022-10-15 04:37:11 +00:00
Donny/강동윤
d334c6e783
feat(es/minifier): Ignore return value if a param of IIFE is not used (#6115) 2022-10-14 02:58:00 +00:00
Donny/강동윤
3d271e82a2
fix(es/minifier): Preserve return values of recursive IIFE (#6142) 
**Description:**

This PR fixes the logic for dropping return values of IIFE.

**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/6141.
 2022-10-14 09:32:56 +09:00
Donny/강동윤
ec0d6d5a0d
feat(es/minifier): Improve trivial rules (#6136) 2022-10-13 23:34:30 +00:00
Donny/강동윤
3a29bfee9b
feat(es/minifier): Change default pass limit to 3 (#6138) 2022-10-14 08:00:32 +09:00
Donny/강동윤
c37839fc62
feat(es/minifier): Swap more binary expressions (#6134) 2022-10-13 03:45:05 +00:00
Donny/강동윤
5875298377
feat(es/minifier): Merge assignments using sequential inliner (#6103) 2022-10-12 05:31:40 +00:00
Donny/강동윤
fc5d8a5d41
feat(es/minifier): Enable reduce_vars by default (#6096) 2022-10-12 04:32:15 +00:00
Donny/강동윤
66196a65be
feat(es/minifier): Inline pure array literal partially (#6099) 2022-10-12 02:29:40 +00:00
Austaras
5a23949f12
feat(es/minifier): Inline and remove vars in one pass (#6093) 2022-10-12 01:52:58 +00:00
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
Donny/강동윤
6365acc9f5
test(es/minifier): Organize terser tests (#6116) 
**Description:**

Our minifier is better than terser in some cases, so we don't need to match the output of terser exactly.
 2022-10-11 08:25:11 +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
ac150c7ced
feat(es/minifier): Use usage_count in sequential inliner (#6071) 2022-10-06 17:27:34 +00:00
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
36d467e7d7
fix(es/minifier): Fix analysis of var declaration after usage (#6043) 
**Description:**

`var_initialized` should be `true` even if the declaration of variable comes after its usage.

**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/6039.
 2022-10-06 02:09:13 +00:00
Donny/강동윤
e3b55e4bcf
fix(es/minifier): Fix optimization of numeric keys (#6052) 
**Description:**

We should not optimize if the key starts with `0`.

**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/6051.
 2022-10-05 12:22:28 +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
Donny/강동윤
197c4e269d
fix(es/minifier): Don't evaluate String.fromCharCode for non-ascii values (#6033) 2022-10-04 16:46:59 +09:00
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
Donny/강동윤
1aae503913
test(es/minifier): Organize terser tests (#6015) 2022-10-02 07:00:10 +00:00
Austaras
61807abf6e
feat(es/minifier): Inline function calls in more cases (#6010) 2022-10-01 18:18:45 +09:00
Austaras
31ffd5a01d
fix(es/renamer): Use a separate scope for the name of FnExpr (#6008) 2022-10-01 12:33:19 +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
2ee3ad0066
fix(es/minifier): Don't inline into nested scope (#6002) 
**Related issue:**

- https://github.com/vercel/next.js/discussions/30237#discussioncomment-3768734
 2022-09-30 08:53:20 +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
0cfc724018
test(es/minifier): Add tests for benchmark files (#5986) 2022-09-29 09:41:13 +09:00
Donny/강동윤
08f6e81d8e
feat(es/minifier): Ignore more return values (#5981) 2022-09-28 14:20:37 +00:00
Donny/강동윤
bc2c0f4133
fix(es/codegen): Fix codegen of a negative number (#5980) 
**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/5912.
 2022-09-28 13:40:07 +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
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