dbg_swc::es::minifier::reduce

Struct ReduceCommand

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pub struct ReduceCommand {
    pub path: PathBuf,
    pub mode: ReduceMode,
    pub remove: bool,
}
Expand description

Reduce input files to minimal reproduction cases

This command requires creduce and terser in PATH.

For creduce, see https://embed.cs.utah.edu/creduce/ for more information. If you are using homebrew, install it with brew install creduce.

For terser, this command uses npx terser to invoke terser for comparison.

After reducing, the reduced file will be moved to .swc-reduce directory.

Note: This tool is not perfect, and it may reduce input file way too much, or fail to reduce an input file.

Fields§

§path: PathBuf

The path to the input file. You can specify a directory if you want to reduce every ‘.js’ file within a directory, in a recursive manner.

§mode: ReduceMode

In ‘size’ mode, this command tries to find the minimal input file where the size of the output file of swc minifier is larger than the one from terser.

In ‘semantics’ mode, this command tries to reduce the input file to a minimal reproduction case which triggers the bug.

§remove: bool

If true, the input file will be removed after the reduction. This can be used for pausing and resuming the process of reducing.

Implementations§

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impl ReduceCommand

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pub fn run(self, cm: Arc<SourceMap>) -> Result<()>

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fn reduce_file(&self, cm: Arc<SourceMap>, src_path: &Path) -> Result<()>

Trait Implementations§

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impl Args for ReduceCommand

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fn augment_args<'b>(__clap_app: Command<'b>) -> Command<'b>

Append to [Command] so it can instantiate Self. Read more
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fn augment_args_for_update<'b>(__clap_app: Command<'b>) -> Command<'b>

Append to [Command] so it can update self. Read more
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impl Debug for ReduceCommand

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl FromArgMatches for ReduceCommand

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fn from_arg_matches(__clap_arg_matches: &ArgMatches) -> Result<Self, Error>

Instantiate Self from [ArgMatches], parsing the arguments as needed. Read more
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fn from_arg_matches_mut( __clap_arg_matches: &mut ArgMatches, ) -> Result<Self, Error>

Instantiate Self from [ArgMatches], parsing the arguments as needed. Read more
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fn update_from_arg_matches( &mut self, __clap_arg_matches: &ArgMatches, ) -> Result<(), Error>

Assign values from ArgMatches to self.
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fn update_from_arg_matches_mut( &mut self, __clap_arg_matches: &mut ArgMatches, ) -> Result<(), Error>

Assign values from ArgMatches to self.

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