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

use std::{collections::HashMap, fmt, marker::PhantomData, path::PathBuf};

use serde::Deserialize;
use string_enum::StringEnum;
use swc_atoms::JsWord;
use swc_common::{collections::AHashMap, FileName};
use swc_ecma_ast::EsVersion;
use swc_ecma_loader::TargetEnv;

pub use self::{
    module::ModuleConfig,
    optimization::OptimizationConfig,
    output::OutputConfig,
    resolve::{AliasConfig, ResolveConfig},
};

mod module;
mod optimization;
mod output;
mod resolve;

#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct Config {
    #[serde(default)]
    pub working_dir: PathBuf,

    #[serde(default)]
    pub mode: Mode,

    #[serde(default)]
    pub target: TargetEnv,

    pub entry: EntryConfig,

    #[serde(default)]
    pub output: Option<OutputConfig>,

    #[serde(default)]
    pub module: ModuleConfig,

    #[serde(default)]
    pub optimization: Option<OptimizationConfig>,

    #[serde(default)]
    pub resolve: Option<ResolveConfig>,

    #[serde(default)]
    pub options: Option<swc::config::Options>,

    #[serde(default)]
    pub external_modules: Vec<JsWord>,

    #[serde(default)]
    pub alias: AHashMap<TargetEnv, AHashMap<String, String>>,

    #[serde(default)]
    pub preserve_symlinks: bool,
}

impl Config {
    pub fn codegen_target(&self) -> Option<EsVersion> {
        self.options
            .as_ref()
            .and_then(|options| options.codegen_target())
    }
}

#[derive(StringEnum)]
pub enum Mode {
    /// `production`
    Production,
    /// `debug`
    Debug,
    /// `none`
    None,
}

impl Default for Mode {
    fn default() -> Self {
        Mode::None
    }
}

#[derive(Debug, Clone, Deserialize)]
#[serde(untagged, rename = "Entry")]
pub enum EntryConfig {
    File(String),
    Multiple(Vec<String>),
    Files(AHashMap<String, PathBuf>),
}

impl From<EntryConfig> for HashMap<String, FileName> {
    fn from(c: EntryConfig) -> Self {
        let mut m = HashMap::default();

        match c {
            EntryConfig::File(f) => {
                let path = PathBuf::from(f);
                let file_name = path
                    .file_name()
                    .expect("entry must be a file, instead of a directory");
                m.insert(file_name.to_string_lossy().into(), FileName::Real(path));
            }
            EntryConfig::Multiple(files) => {
                for f in files {
                    let path = PathBuf::from(f);
                    let file_name = path
                        .file_name()
                        .expect("entry must be a file, instead of a directory");
                    m.insert(file_name.to_string_lossy().into(), FileName::Real(path));
                }
            }
            EntryConfig::Files(f) => {
                return f.into_iter().map(|(k, v)| (k, FileName::Real(v))).collect()
            }
        }

        m
    }
}

pub struct JsCallback<T, Ret> {
    _f: Box<dyn Send + Sync + Fn(T) -> Ret>,
    _phantom: PhantomData<(T, Ret)>,
}

impl<T, Ret> fmt::Debug for JsCallback<T, Ret> {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(f, "<js function>")
    }
}