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use std::{collections::HashSet, path::PathBuf, sync::Arc};
use crate::Cache;
#[derive(Debug, Clone, Hash, PartialEq, Eq)]
pub enum AliasMap {
Target(String),
Ignored,
}
#[derive(Debug, Clone, Hash, PartialEq, Eq)]
pub enum EnforceExtension {
Enabled,
Disabled,
Auto,
}
pub type Alias = Vec<(String, Vec<AliasMap>)>;
#[derive(Debug, Clone)]
pub struct Options {
/// Tried detect file with this extension.
/// Default is `[".js", ".json", ".node"]`
pub extensions: Vec<String>,
/// Enforce that a extension from extensions must be used.
/// Default is `Auto`.
pub enforce_extension: EnforceExtension,
/// Maps key to value.
/// Default is `vec![]`.
/// The reason for using `Vec` instead `HashMap` to keep the order.
pub alias: Alias,
/// Prefer to resolve request as relative request and
/// fallback to resolving as modules.
/// Default is `false`
pub prefer_relative: bool,
/// Use of cache defined external, it designed to shared the info of `description_file`
/// in different resolver.
///
/// - If `external_cache` is `None`, use default cache in resolver.
/// - If `external_cache.is_some()` is true, use this cache.
///
/// Default is `None`.
pub external_cache: Option<Arc<Cache>>,
/// Whether to resolve the real path when the result
/// is a symlink.
/// Default is `true`.
pub symlinks: bool,
/// A JSON file to describing this lib information.
/// Default is `"package.json"`.
pub description_file: String,
/// Resolve to a context instead of a file.
/// Default is `false`
pub resolve_to_context: bool,
/// Main file in this directory.
/// Default is `["index"]`.
pub main_files: Vec<String>,
/// Main fields in Description.
/// Default is `["main"]`.
pub main_fields: Vec<String>,
/// Whether read and parse `"browser"` filed
/// in package.json.
/// Default is `false`
pub browser_field: bool,
/// Condition names for exports filed. Note that its type is a `HashSet`,
/// because the priority is related to the order in which the export field
/// fields are written.
/// Default is `[]`.
pub condition_names: HashSet<String>,
/// When this filed exists, it tries to read `baseURL`
/// and `paths` in the corresponding tsconfig,
/// and processes the mappings.
/// Default is `None`.
pub tsconfig: Option<PathBuf>,
/// A list of directories to resolve modules from, can be absolute path or folder name.
/// Default is `["node_modules"]`
pub modules: Vec<String>,
/// Same as `alias`, but only used if default resolving fails.
/// Default is `[]`.
pub fallback: Alias,
/// Request passed to resolve is already fully specified and
/// extensions or main files are not resolved for it.
/// Default is `false`.
pub fully_specified: bool,
/// A list of exports fields in descriptions files
/// Default is `[["exports"]]`.
pub exports_field: Vec<Vec<String>>,
/// A vector which maps extension to extension aliases.
/// Default is `[]`.
pub extension_alias: Vec<(String, Vec<String>)>,
}
impl Default for Options {
fn default() -> Self {
let extensions = vec![
String::from(".js"),
String::from(".json"),
String::from(".node"),
];
let main_files = vec![String::from("index")];
let main_fields = vec![String::from("main")];
let description_file = String::from("package.json");
let alias = vec![];
let symlinks = true;
let browser_field = false;
let condition_names = HashSet::default();
let prefer_relative = false;
let enforce_extension = EnforceExtension::Auto;
let tsconfig = None;
let external_cache = None;
let resolve_to_context = false;
let modules = vec![String::from("node_modules")];
let fallback = vec![];
let fully_specified = false;
let exports_field = vec![vec![String::from("exports")]];
let extension_alias = vec![];
Self {
fallback,
modules,
extensions,
enforce_extension,
alias,
prefer_relative,
external_cache,
symlinks,
description_file,
resolve_to_context,
main_files,
main_fields,
browser_field,
condition_names,
tsconfig,
fully_specified,
exports_field,
extension_alias,
}
}
}