diff options
| -rw-r--r-- | ext/node/package_json.rs | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/ext/node/package_json.rs b/ext/node/package_json.rs index 5894b8831..e40448930 100644 --- a/ext/node/package_json.rs +++ b/ext/node/package_json.rs @@ -11,9 +11,15 @@ use deno_core::serde_json; use deno_core::serde_json::Map; use deno_core::serde_json::Value; use serde::Serialize; +use std::cell::RefCell; +use std::collections::HashMap; use std::io::ErrorKind; use std::path::PathBuf; +thread_local! { + static CACHE: RefCell<HashMap<PathBuf, PackageJson>> = RefCell::new(HashMap::new()); +} + #[derive(Clone, Debug, Serialize)] pub struct PackageJson { pub exists: bool, @@ -58,6 +64,12 @@ impl PackageJson { pub fn load_skip_read_permission( path: PathBuf, ) -> Result<PackageJson, AnyError> { + assert!(path.is_absolute()); + + if CACHE.with(|cache| cache.borrow().contains_key(&path)) { + return Ok(CACHE.with(|cache| cache.borrow()[&path].clone())); + } + let source = match std::fs::read_to_string(&path) { Ok(source) => source, Err(err) if err.kind() == ErrorKind::NotFound => { @@ -136,6 +148,12 @@ impl PackageJson { imports, bin, }; + + CACHE.with(|cache| { + cache + .borrow_mut() + .insert(package_json.path.clone(), package_json.clone()); + }); Ok(package_json) } |