bindgen: determinism

crates/brk_bindgen/src/generators/javascript/mod.rs

@@ -11,6 +11,7 @@ use std::{fmt::Write, fs, io, path::Path};
 
 use serde_json::json;
 
+use super::write_if_changed;
 use crate::{ClientMetadata, Endpoint, TypeSchemas, VERSION};
 
 /// Generate JavaScript + JSDoc client from metadata and OpenAPI endpoints.
@@ -34,7 +35,7 @@ pub fn generate_javascript_client(
     tree::generate_tree_typedefs(&mut output, &metadata.catalog, metadata);
     tree::generate_main_client(&mut output, &metadata.catalog, metadata, endpoints);
 
-    fs::write(output_path, output)?;
+    write_if_changed(output_path, &output)?;
 
     // Update package.json version if it exists in the same directory
     if let Some(parent) = output_path.parent() {
@@ -59,7 +60,7 @@ fn update_package_json_version(package_json_path: &Path) -> io::Result<()> {
     let updated = serde_json::to_string_pretty(&package)
         .map_err(|e| io::Error::new(io::ErrorKind::InvalidData, e))?;
 
-    fs::write(package_json_path, updated + "\n")?;
+    write_if_changed(package_json_path, &(updated + "\n"))?;
 
     Ok(())
 }

crates/brk_bindgen/src/generators/javascript/tree.rs

@@ -1,6 +1,6 @@
 //! JavaScript tree structure generation.
 
-use std::collections::HashSet;
+use std::collections::BTreeSet;
 use std::fmt::Write;
 
 use brk_types::TreeNode;
@@ -18,7 +18,7 @@ pub fn generate_tree_typedefs(output: &mut String, catalog: &TreeNode, metadata:
     writeln!(output, "// Catalog tree typedefs\n").unwrap();
 
     let pattern_lookup = metadata.pattern_lookup();
-    let mut generated = HashSet::new();
+    let mut generated = BTreeSet::new();
     generate_tree_typedef(
         output,
         "MetricsTree",
@@ -35,9 +35,9 @@ fn generate_tree_typedef(
     name: &str,
     path: &str,
     node: &TreeNode,
-    pattern_lookup: &std::collections::HashMap<Vec<PatternField>, String>,
+    pattern_lookup: &std::collections::BTreeMap<Vec<PatternField>, String>,
     metadata: &ClientMetadata,
-    generated: &mut HashSet<String>,
+    generated: &mut BTreeSet<String>,
 ) {
     let Some(ctx) = prepare_tree_node(node, name, path, pattern_lookup, metadata, generated) else {
         return;
@@ -124,7 +124,7 @@ pub fn generate_main_client(
     writeln!(output, "   */").unwrap();
     writeln!(output, "  _buildTree(basePath) {{").unwrap();
     writeln!(output, "    return {{").unwrap();
-    let mut generated = HashSet::new();
+    let mut generated = BTreeSet::new();
     generate_tree_initializer(
         output,
         catalog,
@@ -178,9 +178,9 @@ fn generate_tree_initializer(
     name: &str,
     path: &str,
     indent: usize,
-    pattern_lookup: &std::collections::HashMap<Vec<PatternField>, String>,
+    pattern_lookup: &std::collections::BTreeMap<Vec<PatternField>, String>,
     metadata: &ClientMetadata,
-    generated: &mut HashSet<String>,
+    generated: &mut BTreeSet<String>,
 ) {
     let indent_str = "  ".repeat(indent);