Austaras
5dbbbea2ef
fix(es/minifier): Mark all function params as potential property mutation ( #7409 )
...
**Description:**
This issue is more severe than I originally thought. It raises not in
array indexing, but in function calls and property mutation. We should
treat all function arguments as potentially be property mutated,
otherwise following example
```js
class A {
a = 1
toString() {
return this.a
}
}
const a = new A()
function foo(x) {
x.a++
}
const b = a + 1
foo(a)
console.log(b)
```
would be error(It should log 2, but logs 3 after compress).
As the result, massive regressions is unavoidable, since some of these
optimizations may indeed cause error. Part of them can be mitigated with
following optimization -- allow inline of ident even if its original
value is mutated. Consider
```js
export function foo(x) {
const y = x
x.a = 1
y.b = 2
}
```
If x is a primitive value, all mutations to its properties are ignored;
if x is a object, then y refers to the same object no matter what
mutation is performed.
And there's still room for more, currently following code
```js
export function foo(x) {
const y = Math.floor(x);
g(y);
}
```
But I'd rather do it in a separate PR.
**Related issue:**
- Closes #7402 .
2023-05-18 01:19:17 +00:00
Donny/강동윤
f9cdd741c2
test(es/minifier): Enable more terser tests ( #7396 )
2023-05-16 03:21:08 +00:00
Donny/강동윤
6d9763e8c0
fix(es/renamer): Don't use symbols used by declarations if eval exists ( #7116 )
...
**Related issue:**
- Closes https://github.com/swc-project/swc/issues/6971 .
- Closes https://github.com/swc-project/swc/issues/7094 .
2023-03-22 06:31:43 +00:00
HeYunfei
a1ccc8afdf
feat(es/minifier): Make name mangler understand block scoping ( #6670 )
...
**Related issue:**
- Closes https://github.com/swc-project/swc/issues/5090 .
- Closes https://github.com/swc-project/swc/issues/5766 .
2023-01-06 03:14:10 +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
66196a65be
feat(es/minifier): Inline pure array literal partially ( #6099 )
2022-10-12 02:29:40 +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
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 )
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**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 )
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**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
8c4873f81e
test(es/minifier): Remove mangle-only snapshots ( #5979 )
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**Description:**
We don't have to store snapshots of all fixtures.
2022-09-28 21:35:52 +09:00
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 )
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**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
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
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
Alexander Akait
7f62fa6227
perf(html): Reduce memory usage ( #5867 )
2022-09-15 04:17:05 +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
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
Donny/강동윤
a06e6e9ce5
fix(es/minifier): Fix alias analyzer ( #5639 )
2022-08-26 10:06:25 +00:00
Donny/강동윤
d44bbffa02
fix(es/minifier): Revert alias analyzer work ( #5634 )
2022-08-26 08:45:49 +00:00
Donny/강동윤
00e635b9ea
fix(es/minifier): Improve alias analyzer ( #5500 )
2022-08-26 07:56:40 +00:00
Donny/강동윤
d81fe67e4b
feat(es/minifier): Improve gzipped size ( #5631 )
2022-08-26 05:23:01 +00:00
Austaras
d2f3e29bb0
feat(es/minifier): Ignore recursive usage for function calls and pure calls ( #5526 )
2022-08-17 23:24:10 +00:00
Austaras
ca21fd0c4d
fix(es/minifier): Inline vars declared in conditional paths ( #5392 )
2022-08-05 13:25:28 +00:00
Donny/강동윤
3943eb24d1
feat(es/minifier): Consider char frequencies ( #5375 )
2022-08-03 10:20:17 +00:00
Donny/강동윤
36d960c7e9
perf(es/hygiene): Make hygiene faster ( #4952 )
2022-06-15 14:36:57 +00:00
Donny/강동윤
b3f6f20721
fix(es/resolver): Make catch parameter not disturb resolving ( #4976 )
2022-06-15 05:24:39 +00:00
Donny/강동윤
7f69b9c80f
test(es/minifier): Add snapshots for the mangler ( #4823 )
...
I found a way to make the name mangler parallel, but I want to ensure that we don't break anything.
2022-05-27 07:32:23 +00:00
Donny/강동윤
49b3c2715c
refactor(es/minifier): Make rust-analyzer fast, really ( #4746 )
2022-05-23 16:16:05 +09:00
Donny/강동윤
47e6cc5190
refactor(es/minifier): Make rust-analyzer faster ( #4744 )
...
- We now use a separate crate for testing the minifier. This makes IDE much faster.
2022-05-23 15:53:01 +09:00
Donny/강동윤
73dfa95e5a
fix(es/minifier): Fix analysis of assignment patterns ( #4712 )
2022-05-19 05:10:12 +00:00
Donny/강동윤
36ff4f735f
test(es/minifier): Add size tests using dbg-swc ( #4664 )
2022-05-16 03:01:53 +00:00
Donny/강동윤
3521ce09e7
fix(es/minifier): Consider more aliases in sequences pass ( #4583 )
2022-05-09 16:36:40 +00:00
Donny/강동윤
9e79f9ced6
fix(es/resolver): Fix handling of a complex try catch ( #4574 )
2022-05-08 10:12:50 +00:00
Donny/강동윤
53610fdafc
feat(es/resolver): Use different syntax context for unresolved refs ( #4436 )
...
- We don't need a list of bindings to check if an identifier is unresolved.
- Checking if an identifier is unresolved is now one CPU instruction.
- Previously it was one hashmap operation.
- This PR also improves performance, by removing the hashmaps mentioned above.
2022-04-26 07:38:50 +00:00
Donny/강동윤
9733917cc7
fix(es/minifier): Fix analysis of update expressions ( #4428 )
2022-04-25 12:07:27 +00:00
Austaras
8cf3ddda6c
feat(es/minifier): Improve handling of switches ( #4260 )
2022-04-21 10:00:25 +00:00
Austaras
df0d572b4f
chore(es/minifier): Update terser test references ( #4297 )
2022-04-10 06:50:52 +00:00
Donny/강동윤
be09ea6991
feat(es/minifier): Drop noop calls ( #4019 )
2022-03-15 16:23:32 +09:00
