File size: 6,586 Bytes
1e92f2d |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 |
use std::sync::Arc;
use anyhow::{Context, Error};
use js_sys::JsString;
use next_custom_transforms::chain_transforms::{custom_before_pass, TransformOptions};
use swc_core::{
base::{
config::{JsMinifyOptions, ParseOptions},
try_with_handler, Compiler,
},
common::{
comments::{Comments, SingleThreadedComments},
errors::ColorConfig,
FileName, FilePathMapping, Mark, SourceMap, GLOBALS,
},
ecma::ast::noop_pass,
};
use wasm_bindgen::prelude::*;
use wasm_bindgen_futures::future_to_promise;
pub mod mdx;
fn convert_err(err: Error) -> JsValue {
format!("{err:?}").into()
}
#[wasm_bindgen(js_name = "minifySync")]
pub fn minify_sync(s: JsString, opts: JsValue) -> Result<JsValue, JsValue> {
console_error_panic_hook::set_once();
let c = compiler();
let opts: JsMinifyOptions = serde_wasm_bindgen::from_value(opts)?;
let value = try_with_handler(
c.cm.clone(),
swc_core::base::HandlerOpts {
color: ColorConfig::Never,
skip_filename: false,
},
|handler| {
GLOBALS.set(&Default::default(), || {
let fm = c.cm.new_source_file(FileName::Anon.into(), String::from(s));
let program = c
.minify(fm, handler, &opts, Default::default())
.context("failed to minify file")?;
Ok(program)
})
},
)
.map_err(|e| e.to_pretty_error())
.map_err(convert_err)?;
Ok(serde_wasm_bindgen::to_value(&value)?)
}
#[wasm_bindgen(js_name = "minify")]
pub fn minify(s: JsString, opts: JsValue) -> js_sys::Promise {
// TODO: This'll be properly scheduled once wasm have standard backed thread
// support.
future_to_promise(async { minify_sync(s, opts) })
}
#[wasm_bindgen(js_name = "transformSync")]
pub fn transform_sync(s: JsValue, opts: JsValue) -> Result<JsValue, JsValue> {
console_error_panic_hook::set_once();
let c = compiler();
let mut opts: TransformOptions = serde_wasm_bindgen::from_value(opts)?;
let s = s.dyn_into::<js_sys::JsString>();
let out = try_with_handler(
c.cm.clone(),
swc_core::base::HandlerOpts {
color: ColorConfig::Never,
skip_filename: false,
},
|handler| {
GLOBALS.set(&Default::default(), || {
let unresolved_mark = Mark::new();
opts.swc.unresolved_mark = Some(unresolved_mark);
let out = match s {
Ok(s) => {
let fm = c.cm.new_source_file(
if opts.swc.filename.is_empty() {
FileName::Anon.into()
} else {
FileName::Real(opts.swc.filename.clone().into()).into()
},
String::from(s),
);
let cm = c.cm.clone();
let file = fm.clone();
let comments = SingleThreadedComments::default();
c.process_js_with_custom_pass(
fm,
None,
handler,
&opts.swc,
comments.clone(),
|_| {
custom_before_pass(
cm,
file,
&opts,
comments.clone(),
Default::default(),
unresolved_mark,
Default::default(),
)
},
|_| noop_pass(),
)
.context("failed to process js file")?
}
Err(v) => c.process_js(
handler,
serde_wasm_bindgen::from_value(v).expect(""),
&opts.swc,
)?,
};
Ok(out)
})
},
)
.map_err(|e| e.to_pretty_error())
.map_err(convert_err)?;
Ok(serde_wasm_bindgen::to_value(&out)?)
}
#[wasm_bindgen(js_name = "transform")]
pub fn transform(s: JsValue, opts: JsValue) -> js_sys::Promise {
// TODO: This'll be properly scheduled once wasm have standard backed thread
// support.
future_to_promise(async { transform_sync(s, opts) })
}
#[wasm_bindgen(js_name = "parseSync")]
pub fn parse_sync(s: JsString, opts: JsValue) -> Result<JsValue, JsValue> {
console_error_panic_hook::set_once();
let c = swc_core::base::Compiler::new(Arc::new(SourceMap::new(FilePathMapping::empty())));
let opts: ParseOptions = serde_wasm_bindgen::from_value(opts)?;
try_with_handler(
c.cm.clone(),
swc_core::base::HandlerOpts {
..Default::default()
},
|handler| {
c.run(|| {
GLOBALS.set(&Default::default(), || {
let fm = c.cm.new_source_file(FileName::Anon.into(), String::from(s));
let cmts = c.comments().clone();
let comments = if opts.comments {
Some(&cmts as &dyn Comments)
} else {
None
};
let program = c
.parse_js(
fm,
handler,
opts.target,
opts.syntax,
opts.is_module,
comments,
)
.context("failed to parse code")?;
let s = serde_json::to_string(&program).unwrap();
Ok(JsValue::from_str(&s))
})
})
},
)
.map_err(|e| e.to_pretty_error())
.map_err(convert_err)
}
#[wasm_bindgen(js_name = "parse")]
pub fn parse(s: JsString, opts: JsValue) -> js_sys::Promise {
// TODO: This'll be properly scheduled once wasm have standard backed thread
// support.
future_to_promise(async { parse_sync(s, opts) })
}
/// Get global sourcemap
fn compiler() -> Arc<Compiler> {
let cm = Arc::new(SourceMap::new(FilePathMapping::empty()));
Arc::new(Compiler::new(cm))
}
|