refactor(transformer)!: remove source_type param from Transformer::new (#6251)

Closes #6248.

crates/oxc/src/compiler.rs

@@ -137,7 +137,6 @@ pub trait CompilerInterface {
                 &mut program,
                 source_path,
                 source_text,
-                source_type,
                 &trivias,
                 symbols,
                 scopes,
@@ -208,12 +207,11 @@ pub trait CompilerInterface {
         program: &mut Program<'a>,
         source_path: &Path,
         source_text: &'a str,
-        source_type: SourceType,
         trivias: &Trivias,
         symbols: SymbolTable,
         scopes: ScopeTree,
     ) -> TransformerReturn {
-        Transformer::new(allocator, source_path, source_type, source_text, trivias.clone(), options)
+        Transformer::new(allocator, source_path, source_text, trivias.clone(), options)
             .build_with_symbols_and_scopes(symbols, scopes, program)
     }
 

crates/oxc_transformer/examples/transformer.rs

@@ -65,15 +65,8 @@ fn main() {
         TransformOptions::enable_all()
     };
 
-    let ret = Transformer::new(
-        &allocator,
-        path,
-        source_type,
-        &source_text,
-        trivias.clone(),
-        transform_options,
-    )
-    .build_with_symbols_and_scopes(symbols, scopes, &mut program);
+    let ret = Transformer::new(&allocator, path, &source_text, trivias.clone(), transform_options)
+        .build_with_symbols_and_scopes(symbols, scopes, &mut program);
 
     if !ret.errors.is_empty() {
         println!("Transformer Errors:");

crates/oxc_transformer/src/context.rs

@@ -43,7 +43,6 @@ pub struct TransformCtx<'a> {
 impl<'a> TransformCtx<'a> {
     pub fn new(
         source_path: &Path,
-        source_type: SourceType,
         source_text: &'a str,
         trivias: Trivias,
         options: &TransformOptions,
@@ -60,7 +59,7 @@ impl<'a> TransformCtx<'a> {
             errors: RefCell::new(vec![]),
             filename,
             source_path,
-            source_type,
+            source_type: SourceType::default(),
             source_text,
             trivias,
             module_imports: ModuleImportsStore::new(),

crates/oxc_transformer/src/lib.rs

@@ -45,7 +45,7 @@ use oxc_allocator::{Allocator, Vec};
 use oxc_ast::{ast::*, Trivias};
 use oxc_diagnostics::OxcDiagnostic;
 use oxc_semantic::{ScopeTree, SymbolTable};
-use oxc_span::{SourceType, SPAN};
+use oxc_span::SPAN;
 use oxc_traverse::{traverse_mut, Traverse, TraverseCtx};
 use regexp::RegExp;
 
@@ -76,12 +76,11 @@ impl<'a> Transformer<'a> {
     pub fn new(
         allocator: &'a Allocator,
         source_path: &Path,
-        source_type: SourceType,
         source_text: &'a str,
         trivias: Trivias,
         options: TransformOptions,
     ) -> Self {
-        let ctx = TransformCtx::new(source_path, source_type, source_text, trivias, &options);
+        let ctx = TransformCtx::new(source_path, source_text, trivias, &options);
         Self { ctx, options, allocator }
     }
 
@@ -94,6 +93,7 @@ impl<'a> Transformer<'a> {
         let allocator = self.allocator;
         let ast_builder = AstBuilder::new(allocator);
 
+        self.ctx.source_type = program.source_type;
         react::update_options_with_comments(&mut self.options, &self.ctx);
 
         let mut transformer = TransformerImpl {

crates/oxc_wasm/src/lib.rs

@@ -241,15 +241,9 @@ impl Oxc {
                 targets: Targets::from_query("chrome 51"),
                 ..EnvOptions::default()
             }) {
-                let result = Transformer::new(
-                    &allocator,
-                    &path,
-                    source_type,
-                    source_text,
-                    trivias.clone(),
-                    options,
-                )
-                .build_with_symbols_and_scopes(symbols, scopes, &mut program);
+                let result =
+                    Transformer::new(&allocator, &path, source_text, trivias.clone(), options)
+                        .build_with_symbols_and_scopes(symbols, scopes, &mut program);
                 if !result.errors.is_empty() {
                     self.save_diagnostics(
                         result.errors.into_iter().map(Error::from).collect::<Vec<_>>(),

napi/transform/src/context.rs

@@ -88,11 +88,6 @@ impl<'a> TransformContext<'a> {
         self.declarations.as_ref()
     }
 
-    #[inline]
-    pub fn source_type(&self) -> SourceType {
-        self.source_type
-    }
-
     #[inline]
     pub fn program(&self) -> Ref<'_, Program<'a>> {
         self.program.borrow()

napi/transform/src/transformer.rs

@@ -122,7 +122,6 @@ fn transpile(ctx: &TransformContext<'_>, options: Option<TransformOptions>) -> C
     let ret = Transformer::new(
         ctx.allocator,
         ctx.file_path(),
-        ctx.source_type(),
         ctx.source_text(),
         ctx.trivias.clone(),
         options,

tasks/benchmark/benches/transformer.rs

@@ -50,7 +50,6 @@ fn bench_transformer(criterion: &mut Criterion) {
                     let ret = Transformer::new(
                         &allocator,
                         Path::new(&file.file_name),
-                        source_type,
                         source_text,
                         trivias,
                         options,

tasks/coverage/snapshots/semantic_babel.snap

@@ -762,9 +762,8 @@ semantic error: `export = <value>;` is only supported when compiling modules to
 Please consider using `export default <value>;`, or add @babel/plugin-transform-modules-commonjs to your Babel config.
 
 tasks/coverage/babel/packages/babel-parser/test/fixtures/typescript/export/equals-in-unambiguous/input.ts
-semantic error: Unresolved references mismatch:
-after transform: ["f"]
-rebuilt        : []
+semantic error: `export = <value>;` is only supported when compiling modules to CommonJS.
+Please consider using `export default <value>;`, or add @babel/plugin-transform-modules-commonjs to your Babel config.
 
 tasks/coverage/babel/packages/babel-parser/test/fixtures/typescript/export/export-type/input.ts
 semantic error: Bindings mismatch: