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feat(swc): Add import resolvers (#1834)
swc_ecma_loader: - Add `Resolve`. - Add `TsConfigResolver`. swc_ecma_transforms_module: - Use `Resolve` for remapping import paths. - Add `ImportResolver`. - Add `NodeImprortResolver`. swc: - Add `paths` to `.swcrc`. - Use `paths`. (#379, #702) - Canonicalize file names.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,18 +1 @@ | ||
| use anyhow::Error; | ||
| use swc_common::FileName; | ||
|
|
||
| pub trait Resolve: swc_common::sync::Send + swc_common::sync::Sync { | ||
| fn resolve(&self, base: &FileName, module_specifier: &str) -> Result<FileName, Error>; | ||
| } | ||
|
|
||
| impl<T: ?Sized + Resolve> Resolve for Box<T> { | ||
| fn resolve(&self, base: &FileName, module_specifier: &str) -> Result<FileName, Error> { | ||
| (**self).resolve(base, module_specifier) | ||
| } | ||
| } | ||
|
|
||
| impl<'a, T: ?Sized + Resolve> Resolve for &'a T { | ||
| fn resolve(&self, base: &FileName, module_specifier: &str) -> Result<FileName, Error> { | ||
| (**self).resolve(base, module_specifier) | ||
| } | ||
| } | ||
| pub use swc_ecma_loader::resolve::Resolve; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,7 +1,2 @@ | ||
| #[cfg(test)] | ||
| mod tests { | ||
| #[test] | ||
| fn it_works() { | ||
| assert_eq!(2 + 2, 4); | ||
| } | ||
| } | ||
| pub mod resolve; | ||
| pub mod resolvers; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| use anyhow::Error; | ||
| use std::sync::Arc; | ||
| use swc_common::sync::{Send, Sync}; | ||
| use swc_common::FileName; | ||
|
|
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| pub trait Resolve: Send + Sync { | ||
| fn resolve(&self, base: &FileName, module_specifier: &str) -> Result<FileName, Error>; | ||
| } | ||
|
|
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| macro_rules! impl_ref { | ||
| ($R:ident, $T:ty) => { | ||
| impl<$R> Resolve for $T | ||
| where | ||
| R: ?Sized + Resolve, | ||
| { | ||
| fn resolve(&self, base: &FileName, src: &str) -> Result<FileName, Error> { | ||
| (**self).resolve(base, src) | ||
| } | ||
| } | ||
| }; | ||
| } | ||
|
|
||
| impl_ref!(R, &'_ R); | ||
| impl_ref!(R, Box<R>); | ||
| impl_ref!(R, Arc<R>); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,68 @@ | ||
| use crate::resolve::Resolve; | ||
| use anyhow::Error; | ||
| use lru::LruCache; | ||
| use std::sync::Mutex; | ||
| use swc_common::FileName; | ||
|
|
||
| #[derive(Debug)] | ||
| pub struct CachingResolver<R> | ||
| where | ||
| R: Resolve, | ||
| { | ||
| cache: Mutex<LruCache<(FileName, String), FileName>>, | ||
| inner: R, | ||
| } | ||
|
|
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| impl<R> Default for CachingResolver<R> | ||
| where | ||
| R: Resolve + Default, | ||
| { | ||
| fn default() -> Self { | ||
| Self::new(40, Default::default()) | ||
| } | ||
| } | ||
|
|
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| impl<R> CachingResolver<R> | ||
| where | ||
| R: Resolve, | ||
| { | ||
| pub fn new(cap: usize, inner: R) -> Self { | ||
| Self { | ||
| cache: Mutex::new(LruCache::new(cap)), | ||
| inner, | ||
| } | ||
| } | ||
| } | ||
|
|
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| impl<R> Resolve for CachingResolver<R> | ||
| where | ||
| R: Resolve, | ||
| { | ||
| fn resolve(&self, base: &FileName, src: &str) -> Result<FileName, Error> { | ||
| { | ||
| let lock = self.cache.lock(); | ||
| match lock { | ||
| Ok(mut lock) => { | ||
| // | ||
| if let Some(v) = lock.get(&(base.clone(), src.to_string())) { | ||
| return Ok(v.clone()); | ||
| } | ||
| } | ||
| Err(_) => {} | ||
| } | ||
| } | ||
|
|
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| let resolved = self.inner.resolve(base, src)?; | ||
| { | ||
| let lock = self.cache.lock(); | ||
| match lock { | ||
| Ok(mut lock) => { | ||
| lock.put((base.clone(), src.to_string()), resolved.clone()); | ||
| } | ||
| Err(_) => {} | ||
| } | ||
| } | ||
|
|
||
| Ok(resolved) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,6 @@ | ||
| #[cfg(feature = "lru")] | ||
| pub mod lru; | ||
| #[cfg(feature = "node")] | ||
| pub mod node; | ||
| #[cfg(feature = "tsc")] | ||
| pub mod tsc; |
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