next_swc_napi/
minify.rs

1/*
2Copyright (c) 2017 The swc Project Developers
3
4Permission is hereby granted, free of charge, to any
5person obtaining a copy of this software and associated
6documentation files (the "Software"), to deal in the
7Software without restriction, including without
8limitation the rights to use, copy, modify, merge,
9publish, distribute, sublicense, and/or sell copies of
10the Software, and to permit persons to whom the Software
11is furnished to do so, subject to the following
12conditions:
13
14The above copyright notice and this permission notice
15shall be included in all copies or substantial portions
16of the Software.
17
18THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
19ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
20TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
21PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
22SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
23CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
24OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
25IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
26DEALINGS IN THE SOFTWARE.
27*/
28
29use anyhow::Context;
30use napi::bindgen_prelude::*;
31use swc_core::{
32    base::{TransformOutput, config::JsMinifyOptions, try_with_handler},
33    common::{FileName, GLOBALS, errors::ColorConfig},
34};
35
36use crate::{get_compiler, util::MapErr};
37
38pub struct MinifyTask {
39    c: swc_core::base::Compiler,
40    code: Option<String>,
41    opts: JsMinifyOptions,
42}
43
44#[napi]
45impl Task for MinifyTask {
46    type Output = TransformOutput;
47
48    type JsValue = TransformOutput;
49
50    fn compute(&mut self) -> napi::Result<Self::Output> {
51        let code = self.code.take().unwrap_or_default();
52
53        try_with_handler(
54            self.c.cm.clone(),
55            swc_core::base::HandlerOpts {
56                color: ColorConfig::Never,
57                skip_filename: true,
58            },
59            |handler| {
60                GLOBALS.set(&Default::default(), || {
61                    let fm = self.c.cm.new_source_file(FileName::Anon.into(), code);
62
63                    self.c.minify(fm, handler, &self.opts, Default::default())
64                })
65            },
66        )
67        .map_err(|e| e.to_pretty_error())
68        .convert_err()
69    }
70
71    fn resolve(&mut self, _: napi::Env, output: Self::Output) -> napi::Result<Self::JsValue> {
72        Ok(output)
73    }
74}
75
76#[napi]
77pub fn minify(
78    input: Buffer,
79    opts: Buffer,
80    signal: Option<AbortSignal>,
81) -> napi::Result<AsyncTask<MinifyTask>> {
82    let code = String::from_utf8(input.into())
83        .context("failed to convert input to string")
84        .convert_err()?;
85    let opts = serde_json::from_slice(&opts)?;
86
87    let c = get_compiler();
88
89    let task = MinifyTask {
90        c,
91        code: Some(code),
92        opts,
93    };
94
95    Ok(AsyncTask::with_optional_signal(task, signal))
96}
97
98#[napi]
99pub fn minify_sync(input: Buffer, opts: Buffer) -> napi::Result<TransformOutput> {
100    let code = String::from_utf8(input.into())
101        .context("failed to convert input to string")
102        .convert_err()?;
103    let opts = serde_json::from_slice(&opts)?;
104
105    let c = get_compiler();
106
107    let fm = c.cm.new_source_file(FileName::Anon.into(), code);
108
109    try_with_handler(
110        c.cm.clone(),
111        swc_core::base::HandlerOpts {
112            color: ColorConfig::Never,
113            skip_filename: true,
114        },
115        |handler| {
116            GLOBALS.set(&Default::default(), || {
117                c.minify(fm, handler, &opts, Default::default())
118            })
119        },
120    )
121    .map_err(|e| e.to_pretty_error())
122    .convert_err()
123}
next_swc_napi/minify.rs

next_swc_napi/
minify.rs
