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a7c82bdfa9
swc/crates/swc_ecma_minifier
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CPunisher a7c82bdfa9
fix(es/minifier): Fix variable declaration in default branch (#9220) 
**Description:**

When a default branch appears before an exact match, the variable declaration should be recorded before deleting the default branch.

**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/8919
2024-07-12 13:03:50 +00:00
..
benches refactor(common): Drop SyntaxContext from AST nodes (#9175) 2024-07-12 13:13:20 +09:00
examples doc(es/minifier): Update examples code (#8652) 2024-02-21 02:11:19 +00:00
fuzz chore(es/minifier): Configure fuzzer (#6246) 2022-10-25 04:36:03 +00:00
inputs fix(es/minifier): Fix bugs (#2955) 2022-01-05 05:12:52 +09:00
scripts fix(es/minifier): Abort IIFE invoker in function parameters (#8828) 2024-04-09 15:22:38 +09:00
src fix(es/minifier): Fix variable declaration in default branch (#9220) 2024-07-12 13:03:50 +00:00
tests fix(es/minifier): Fix variable declaration in default branch (#9220) 2024-07-12 13:03:50 +00:00
.eslintrc chore(repo): Configure prettier (#4523) 2022-05-04 14:25:28 +00:00
.gitignore feat(es/minifier): Remove duplicate var declarations (#5373) 2022-08-03 13:05:56 +09:00
Cargo.toml chore: Bump crates 2024-07-12 12:08:53 +00:00
package.json fix(es/minifier): Fix optimization of assignment expressions (#3231) 2022-01-12 08:26:56 +09:00
README.md chore(es/minifier): Add a script to instrument real-world inputs (#4399) 2022-04-22 10:37:04 +00:00
yarn.lock fix(es/minifier): Fix optimization of assignment expressions (#3231) 2022-01-12 08:26:56 +09:00

README.md

Minifier

EcmaScript minifier for the SWC project. This is basically a port of terser.

Note

Currently name mangler is very simple. To focus on creating a MVP, I (kdy1) will use simple logic for name mangler and implement the content-aware name mangler after publishing first non-beta version.

Debugging tips

If the output contains variables named e, t, n it typically means the original library is published in a minified form and the input contains eval. The current swc name mangler does not do anything if eval is used.

Profiling the minifier

From mac os x, run

./scripts/instrument/all.sh path/to/input/dir