chore: remove oxc_transformer for a reimplementation (#2865)

closes #2860

crates/oxc_transformer/Cargo.toml

@@ -19,17 +19,11 @@ workspace = true
 doctest = false
 
 [dependencies]
-bitflags        = { workspace = true }
 oxc_ast         = { workspace = true }
 oxc_span        = { workspace = true }
 oxc_allocator   = { workspace = true }
-oxc_syntax      = { workspace = true }
 oxc_semantic    = { workspace = true }
 oxc_diagnostics = { workspace = true }
-rustc-hash      = { workspace = true }
-
-serde = { workspace = true, features = ["derive"] }
-phf   = { workspace = true, features = ["macros"] }
 
 [dev-dependencies]
 oxc_parser  = { workspace = true }

crates/oxc_transformer/examples/transformer.rs

@@ -8,10 +8,7 @@ use oxc_codegen::{Codegen, CodegenOptions};
 use oxc_parser::Parser;
 use oxc_semantic::SemanticBuilder;
 use oxc_span::SourceType;
-use oxc_transformer::{
-    ReactJsxOptions, ReactJsxRuntime, ReactJsxRuntimeOption, TransformOptions, TransformTarget,
-    Transformer,
-};
+use oxc_transformer::{TransformOptions, Transformer};
 
 // Instruction:
 // create a `test.js`,
@@ -45,14 +42,7 @@ fn main() {
         .semantic;
 
     let program = allocator.alloc(ret.program);
-    let transform_options = TransformOptions {
-        target: TransformTarget::ES5,
-        react_jsx: Some(ReactJsxOptions {
-            runtime: Some(ReactJsxRuntimeOption::Valid(ReactJsxRuntime::Classic)),
-            ..ReactJsxOptions::default()
-        }),
-        ..TransformOptions::default()
-    };
+    let transform_options = TransformOptions {};
     Transformer::new(&allocator, source_type, semantic, transform_options).build(program).unwrap();
 
     let printed = Codegen::<false>::new("", &source_text, CodegenOptions::default())