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**Description:** The problem arises in L235 of swc_ecma_transforms_base/src/rename/mod.rs ```rs unit!(visit_mut_fn_decl, FnDecl, true); ``` which calls `get_map` and evals to ```rs node.visit_children_with(&mut v); ``` with `FnDecl` and `Analyzer` in L132. However, in `Analyzer`, a visit to raw function was not overloaded, so function arguments and function body are considered different scopes. **Related issue:** - Closes #7261. |
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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