refactor(napi/transform): remove a call on TransformOptions::clone (#6210)

napi/transform/src/context.rs

@@ -1,5 +1,5 @@
 use std::{
-    cell::{OnceCell, Ref, RefCell, RefMut},
+    cell::{Ref, RefCell, RefMut},
     path::Path,
     sync::Arc,
 };
@@ -19,9 +19,6 @@ pub(crate) struct TransformContext<'a> {
     program: RefCell<Program<'a>>,
     pub trivias: Trivias,
 
-    /// Will be initialized if provided to constructor or first accessed.
-    /// Prevents allocations for codegen tasks that don't require options.
-    options: OnceCell<oxc_transformer::TransformOptions>,
     /// Generate source maps?
     source_map: bool,
     /// Generate `.d.ts` files?
@@ -45,7 +42,7 @@ impl<'a> TransformContext<'a> {
         filename: &'a str,
         source_text: &'a str,
         source_type: SourceType,
-        options: Option<TransformOptions>,
+        options: Option<&TransformOptions>,
     ) -> Self {
         let ParserReturn { errors, program, trivias, .. } =
             Parser::new(allocator, source_text, source_type).parse();
@@ -56,19 +53,11 @@ impl<'a> TransformContext<'a> {
         let declarations =
             options.as_ref().and_then(|o| o.typescript.as_ref()).and_then(|t| t.declaration);
 
-        // Insert options into the cell if provided. Otherwise they will be
-        // initialized to default when first accessed.
-        let options_cell = OnceCell::new();
-        if let Some(options) = options {
-            options_cell.set(options.into()).unwrap();
-        }
-
         Self {
             allocator,
             program: RefCell::new(program),
             trivias,
 
-            options: options_cell,
             source_map,
             declarations,
 
@@ -94,11 +83,6 @@ impl<'a> TransformContext<'a> {
         self.source_text
     }
 
-    #[inline]
-    pub fn oxc_options(&self) -> oxc_transformer::TransformOptions {
-        self.options.get_or_init(Default::default).clone()
-    }
-
     #[inline]
     pub(crate) fn declarations(&self) -> Option<&IsolatedDeclarationsOptions> {
         self.declarations.as_ref()

napi/transform/src/isolated_declaration.rs

@@ -43,7 +43,7 @@ pub fn isolated_declaration(
         &filename,
         &source_text,
         source_type,
-        Some(TransformOptions { sourcemap: options.sourcemap, ..Default::default() }),
+        Some(&TransformOptions { sourcemap: options.sourcemap, ..Default::default() }),
     );
     let transformed_ret = build_declarations(&ctx, options);
 

napi/transform/src/transformer.rs

@@ -74,7 +74,8 @@ pub fn transform(
     };
 
     let allocator = Allocator::default();
-    let ctx = TransformContext::new(&allocator, &filename, &source_text, source_type, options);
+    let ctx =
+        TransformContext::new(&allocator, &filename, &source_text, source_type, options.as_ref());
 
     let declarations_result = source_type
         .is_typescript()
@@ -82,7 +83,7 @@ pub fn transform(
         .flatten()
         .map(|options| isolated_declaration::build_declarations(&ctx, *options));
 
-    let transpile_result = transpile(&ctx);
+    let transpile_result = transpile(&ctx, options);
 
     let (declaration, declaration_map) = declarations_result
         .map_or((None, None), |d| (Some(d.source_text), d.source_map.map(Into::into)));
@@ -96,7 +97,7 @@ pub fn transform(
     }
 }
 
-fn transpile(ctx: &TransformContext<'_>) -> CodegenReturn {
+fn transpile(ctx: &TransformContext<'_>, options: Option<TransformOptions>) -> CodegenReturn {
     let semantic_ret = SemanticBuilder::new(ctx.source_text())
         // Estimate transformer will triple scopes, symbols, references
         .with_excess_capacity(2.0)
@@ -104,6 +105,8 @@ fn transpile(ctx: &TransformContext<'_>) -> CodegenReturn {
         .build(&ctx.program());
     ctx.add_diagnostics(semantic_ret.errors);
 
+    let options = options.map(oxc_transformer::TransformOptions::from).unwrap_or_default();
+
     let (symbols, scopes) = semantic_ret.semantic.into_symbol_table_and_scope_tree();
     let ret = Transformer::new(
         ctx.allocator,
@@ -111,10 +114,11 @@ fn transpile(ctx: &TransformContext<'_>) -> CodegenReturn {
         ctx.source_type(),
         ctx.source_text(),
         ctx.trivias.clone(),
-        ctx.oxc_options(),
+        options,
     )
     .build_with_symbols_and_scopes(symbols, scopes, &mut ctx.program_mut());
 
     ctx.add_diagnostics(ret.errors);
+
     ctx.codegen().build(&ctx.program())
 }