Add dinopkg-package-json

Cargo.lock

@@ -230,6 +230,7 @@ version = "0.1.0"
 dependencies = [
  "clap",
  "color-eyre",
+ "dinopkg-package-json",
  "owo-colors 4.0.0",
  "reqwest",
  "tokio",
@@ -241,6 +242,8 @@ version = "0.1.0"
 dependencies = [
  "serde",
  "serde_json",
+ "thiserror",
+ "tokio",
 ]
 
 [[package]]
@@ -1089,6 +1092,26 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "thiserror"
+version = "1.0.61"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c546c80d6be4bc6a00c0f01730c08df82eaa7a7a61f11d656526506112cc1709"
+dependencies = [
+ "thiserror-impl",
+]
+
+[[package]]
+name = "thiserror-impl"
+version = "1.0.61"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "46c3384250002a6d5af4d114f2845d37b57521033f30d5c3f46c4d70e1197533"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "thread_local"
 version = "1.1.8"

crates/dinopkg-cli/Cargo.toml

@@ -9,3 +9,4 @@ color-eyre = "0.6.3"
 owo-colors = "4.0.0"
 reqwest = "0.12.5"
 tokio = { version = "1.38.0", features = ["macros", "rt-multi-thread"] }
+dinopkg-package-json = { path = "../dinopkg-package-json" }

crates/dinopkg-cli/src/command/run.rs

@@ -1 +1,3 @@
+use dinopkg_package_json::PackageJson;
+
 pub async fn run(script_name: Option<String>) {}

crates/dinopkg-package-json/Cargo.toml

@@ -6,3 +6,5 @@ edition = "2021"
 [dependencies]
 serde = { version = "1.0.204", features = ["derive"] }
 serde_json = "1.0.120"
+thiserror = "1.0.61"
+tokio = { version = "1.38.0", features = ["fs"], optional = true }

crates/dinopkg-package-json/src/lib.rs

@@ -17,8 +17,21 @@ pub struct PackageJson {
 pub type Scripts = HashMap<String, String>;
 pub type Dependencies = HashMap<String, String>;
 
+#[derive(thiserror::Error, Debug)]
+pub enum Error {
+    #[error("deserialization error: {0}")]
+    Serde(#[from] serde_json::Error),
+}
+
 impl PackageJson {
-    pub fn parse(json: &str) -> Result<Self, serde_json::Error> {
-        serde_json::from_str(json)
+    pub fn parse(json: &str) -> Result<Self, Error> {
+        Ok(serde_json::from_str(json)?)
+    }
+
+    #[cfg(feature = "tokio")]
+    pub async fn from_file() -> Result<Self, Error> {
+        let file = tokio::fs::read("package.json").await?;
+        let file = String::from_utf8(file)?;
+        Self::parse(&file)
     }
 }