chore: add resolve_file example (#881)

Author: Boshen

Cargo.toml

@@ -75,7 +75,7 @@ literal_string_with_formatting_args = "allow"
 missing_const_for_fn = "allow"
 
 [[example]]
-name = "resolver"
+name = "dir"
 
 [dependencies]
 cfg-if = "1"

examples/resolver.rs renamed to examples/dir.rs

@@ -0,0 +1,46 @@
+// See documentation at <https://docs.rs/oxc_resolver>
+
+use std::path::PathBuf;
+
+use oxc_resolver::{AliasValue, ResolveOptions, Resolver, TsconfigDiscovery};
+use pico_args::Arguments;
+
+fn main() {
+    let mut args = Arguments::from_env();
+
+    let path = args.free_from_str::<PathBuf>().expect("path");
+    let specifier = args.free_from_str::<String>().expect("specifier");
+
+    assert!(path.is_file(), "{} must be a file that will be resolved against.", path.display());
+    assert!(path.is_absolute(), "{} must be an absolute path.", path.display());
+
+    println!("path: {}", path.to_string_lossy());
+    println!("specifier: {specifier}");
+
+    let options = ResolveOptions {
+        alias_fields: vec![vec!["browser".into()]],
+        alias: vec![("asdf".into(), vec![AliasValue::from("./test.js")])],
+        extensions: vec![".js".into(), ".ts".into()],
+        extension_alias: vec![(".js".into(), vec![".ts".into(), ".js".into()])],
+        // ESM
+        condition_names: vec!["node".into(), "import".into()],
+        // CJS
+        // condition_names: vec!["node".into(), "require".into()],
+        tsconfig: Some(TsconfigDiscovery::Auto),
+        ..ResolveOptions::default()
+    };
+
+    println!();
+
+    match Resolver::new(options).resolve_file(path, &specifier) {
+        Err(error) => println!("Error: {error}"),
+        Ok(resolution) => {
+            println!("Resolution: {}", resolution.full_path().to_string_lossy());
+            println!("Module Type: {:?}", resolution.module_type());
+            println!(
+                "package.json: {:?}",
+                resolution.package_json().map(|p| p.path.to_string_lossy())
+            );
+        }
+    }
+}

examples/file.rs

@@ -40,12 +40,12 @@ watch *args='':
 watch-check:
   just watch "'cargo check; cargo clippy'"
 
-watch-example *args='':
-  just watch "cargo run --example resolver -- {{args}}"
+watch-example target *args='':
+  just watch "cargo run --example {{target}} -- {{args}}"
 
 # Run the example
-example *args='':
-  cargo run --example resolver -- {{args}}
+example target *args='':
+  cargo run --example {{target}} -- {{args}}
 
 # Format all files
 fmt:

justfile

@@ -43,7 +43,7 @@
 //! ## Example
 //!
 //! ```rust,ignore
-#![doc = include_str!("../examples/resolver.rs")]
+#![doc = include_str!("../examples/dir.rs")]
 //! ```
 
 mod builtins;