feat(oxc): add napi transform options (#6268)

crates/oxc/Cargo.toml

@@ -47,6 +47,8 @@ oxc_transformer = { workspace = true, optional = true }
 napi = { workspace = true, optional = true, features = ["async"] }
 napi-derive = { workspace = true, optional = true }
 
+rustc-hash = { workspace = true, optional = true }
+
 [features]
 full = [
   "codegen",
@@ -59,6 +61,7 @@ full = [
   "cfg",
 ]
 
+parser = [] # for napi
 semantic = ["oxc_semantic"]
 transformer = ["oxc_transformer"]
 minifier = ["oxc_mangler", "oxc_minifier"]
@@ -78,7 +81,7 @@ sourcemap = ["oxc_sourcemap"]
 sourcemap_concurrent = ["oxc_sourcemap/concurrent", "sourcemap"]
 
 wasm = ["oxc_transformer/wasm"]
-napi = ["dep:napi", "dep:napi-derive"]
+napi = ["dep:napi", "dep:napi-derive", "dep:rustc-hash"]
 
 [package.metadata.docs.rs]
 all-features = true

crates/oxc/src/napi/isolated_declarations.rs

@@ -0,0 +1,24 @@
+use napi_derive::napi;
+
+use super::source_map::SourceMap;
+
+#[napi(object)]
+pub struct IsolatedDeclarationsResult {
+    pub code: String,
+    pub map: Option<SourceMap>,
+    pub errors: Vec<String>,
+}
+
+#[napi(object)]
+#[derive(Debug, Default, Clone, Copy)]
+pub struct IsolatedDeclarationsOptions {
+    /// Do not emit declarations for code that has an @internal annotation in its JSDoc comment.
+    /// This is an internal compiler option; use at your own risk, because the compiler does not check that the result is valid.
+    ///
+    /// Default: `false`
+    ///
+    /// See <https://www.typescriptlang.org/tsconfig/#stripInternal>
+    pub strip_internal: Option<bool>,
+
+    pub sourcemap: Option<bool>,
+}

crates/oxc/src/napi/mod.rs

@@ -1,3 +1,11 @@
-mod parse;
+#[cfg(feature = "parser")]
+pub mod parse;
 
-pub use parse::*;
+#[cfg(feature = "sourcemap")]
+pub mod source_map;
+
+#[cfg(feature = "isolated_declarations")]
+pub mod isolated_declarations;
+
+#[cfg(feature = "transformer")]
+pub mod transform;

napi/transform/src/options.rs → crates/oxc/src/napi/transform.rs

@@ -8,7 +8,7 @@ use rustc_hash::FxHashMap;
 
 use oxc_transformer::{JsxRuntime, RewriteExtensionsMode};
 
-use crate::IsolatedDeclarationsOptions;
+use super::isolated_declarations::IsolatedDeclarationsOptions;
 
 /// Options for transforming a JavaScript or TypeScript file.
 ///

napi/parser/Cargo.toml

@@ -21,7 +21,7 @@ test = false
 doctest = false
 
 [dependencies]
-oxc = { workspace = true, features = ["napi", "serialize"] }
+oxc = { workspace = true, features = ["napi", "serialize", "parser"] }
 oxc_module_lexer = { workspace = true }
 
 napi = { workspace = true, features = ["async"] }

napi/parser/src/lib.rs

@@ -9,7 +9,7 @@ use oxc::{
     allocator::Allocator,
     ast::CommentKind,
     diagnostics::{Error, NamedSource},
-    napi::{Comment, ParseResult, ParserOptions},
+    napi::parse::{Comment, ParseResult, ParserOptions},
     parser::{ParseOptions, Parser, ParserReturn},
     span::SourceType,
 };

napi/transform/Cargo.toml

@@ -21,16 +21,7 @@ test = false
 doctest = false
 
 [dependencies]
-oxc_allocator = { workspace = true }
-oxc_ast = { workspace = true }
-oxc_codegen = { workspace = true }
-oxc_diagnostics = { workspace = true }
-oxc_isolated_declarations = { workspace = true }
-oxc_parser = { workspace = true }
-oxc_semantic = { workspace = true }
-oxc_sourcemap = { workspace = true }
-oxc_span = { workspace = true }
-oxc_transformer = { workspace = true }
+oxc = { workspace = true, features = ["napi", "isolated_declarations", "transformer", "sourcemap", "codegen", "semantic"] }
 
 rustc-hash = { workspace = true }
 

napi/transform/src/context.rs

@@ -4,14 +4,15 @@ use std::{
     sync::Arc,
 };
 
-use oxc_allocator::Allocator;
-use oxc_ast::{ast::Program, Trivias};
-use oxc_codegen::Codegen;
-use oxc_diagnostics::{Error, NamedSource, OxcDiagnostic};
-use oxc_parser::{Parser, ParserReturn};
-use oxc_span::SourceType;
-
-use crate::{IsolatedDeclarationsOptions, TransformOptions};
+use oxc::{
+    allocator::Allocator,
+    ast::{ast::Program, Trivias},
+    codegen::Codegen,
+    diagnostics::{Error, NamedSource, OxcDiagnostic},
+    napi::{isolated_declarations::IsolatedDeclarationsOptions, transform::TransformOptions},
+    parser::{Parser, ParserReturn},
+    span::SourceType,
+};
 
 #[must_use]
 pub(crate) struct TransformContext<'a> {
@@ -21,13 +22,13 @@ pub(crate) struct TransformContext<'a> {
 
     /// Generate source maps?
     source_map: bool,
+
     /// Generate `.d.ts` files?
-    ///
-    /// Used by [`crate::transform`].
     declarations: Option<IsolatedDeclarationsOptions>,
 
     /// Path to the file being transformed.
     filename: &'a str,
+
     /// Source text of the file being transformed.
     source_text: &'a str,
     source_type: SourceType,

napi/transform/src/isolated_declaration.rs

@@ -1,31 +1,16 @@
 use napi_derive::napi;
-use oxc_allocator::Allocator;
-use oxc_codegen::{CodegenReturn, CommentOptions};
-use oxc_isolated_declarations::IsolatedDeclarations;
-use oxc_span::SourceType;
+use oxc::{
+    allocator::Allocator,
+    codegen::{CodegenReturn, CommentOptions},
+    isolated_declarations::IsolatedDeclarations,
+    napi::{
+        isolated_declarations::{IsolatedDeclarationsOptions, IsolatedDeclarationsResult},
+        transform::TransformOptions,
+    },
+    span::SourceType,
+};
 
-use crate::{context::TransformContext, SourceMap, TransformOptions};
-
-#[napi(object)]
-pub struct IsolatedDeclarationsResult {
-    pub code: String,
-    pub map: Option<SourceMap>,
-    pub errors: Vec<String>,
-}
-
-#[napi(object)]
-#[derive(Debug, Default, Clone, Copy)]
-pub struct IsolatedDeclarationsOptions {
-    /// Do not emit declarations for code that has an @internal annotation in its JSDoc comment.
-    /// This is an internal compiler option; use at your own risk, because the compiler does not check that the result is valid.
-    ///
-    /// Default: `false`
-    ///
-    /// See <https://www.typescriptlang.org/tsconfig/#stripInternal>
-    pub strip_internal: Option<bool>,
-
-    pub sourcemap: Option<bool>,
-}
+use crate::context::TransformContext;
 
 /// TypeScript Isolated Declarations for Standalone DTS Emit
 #[allow(clippy::needless_pass_by_value)]
@@ -62,7 +47,7 @@ pub(crate) fn build_declarations(
         ctx.allocator,
         ctx.source_text(),
         &ctx.trivias,
-        oxc_isolated_declarations::IsolatedDeclarationsOptions {
+        oxc::isolated_declarations::IsolatedDeclarationsOptions {
             strip_internal: options.strip_internal.unwrap_or(false),
         },
     )

napi/transform/src/lib.rs

@@ -1,14 +1,6 @@
-// NOTE: the strange order of struct and `mod` statements is to establish the
-// desired order in generated `index.d.ts` code. We want options to be on top.
-// This is not only for aesthetics, but using declarations before they're parsed
-// breaks NAPI typegen.
 mod context;
-mod options;
 
-pub use crate::options::*;
-
-mod sourcemap;
-pub use crate::sourcemap::*;
+pub use oxc::napi::{isolated_declarations, transform};
 
 mod isolated_declaration;
 pub use isolated_declaration::*;

napi/transform/src/transformer.rs

@@ -2,16 +2,19 @@ use napi::Either;
 use napi_derive::napi;
 use rustc_hash::FxHashMap;
 
-use oxc_allocator::Allocator;
-use oxc_codegen::CodegenReturn;
-use oxc_semantic::{ScopeTree, SemanticBuilder, SymbolTable};
-use oxc_span::SourceType;
-use oxc_transformer::{
-    InjectGlobalVariables, InjectGlobalVariablesConfig, InjectImport, ReplaceGlobalDefines,
-    ReplaceGlobalDefinesConfig, Transformer,
+use oxc::{
+    allocator::Allocator,
+    codegen::CodegenReturn,
+    napi::{source_map::SourceMap, transform::TransformOptions},
+    semantic::{ScopeTree, SemanticBuilder, SymbolTable},
+    span::SourceType,
+    transformer::{
+        InjectGlobalVariables, InjectGlobalVariablesConfig, InjectImport, ReplaceGlobalDefines,
+        ReplaceGlobalDefinesConfig, Transformer,
+    },
 };
 
-use crate::{context::TransformContext, isolated_declaration, SourceMap, TransformOptions};
+use crate::{context::TransformContext, isolated_declaration};
 
 // NOTE: Use JSDoc syntax for all doc comments, not rustdoc.
 // NOTE: Types must be aligned with [@types/babel__core](https://github.com/DefinitelyTyped/DefinitelyTyped/blob/master/types/babel__core/index.d.ts).
@@ -115,7 +118,7 @@ fn transpile(ctx: &TransformContext<'_>, options: Option<TransformOptions>) -> C
     let define = options.as_mut().and_then(|options| options.define.take());
     let inject = options.as_mut().and_then(|options| options.inject.take());
 
-    let options = options.map(oxc_transformer::TransformOptions::from).unwrap_or_default();
+    let options = options.map(oxc::transformer::TransformOptions::from).unwrap_or_default();
 
     let (mut symbols, mut scopes) = semantic_ret.semantic.into_symbol_table_and_scope_tree();