docs(oxc): add submodule documentation (#5984)

crates/oxc/src/lib.rs

@@ -9,6 +9,9 @@ mod compiler;
 pub use compiler::{Compiler, CompilerInterface};
 
 pub mod allocator {
+    //! Memory arena allocator used by all other submodules.
+    //!
+    //! See the [`oxc_allocator` module-level documentation](oxc_allocator) for more information.
     #[doc(inline)]
     pub use oxc_allocator::*;
 }
@@ -19,16 +22,25 @@ pub mod ast {
 }
 
 pub mod diagnostics {
+    //! Error data types and utilities for handling/reporting them.
+    //!
+    //! See the [`oxc_diagnostics` module-level documentation](oxc_diagnostics) for more information.
     #[doc(inline)]
     pub use oxc_diagnostics::*;
 }
 
 pub mod index {
+    //! A Vec with newtype indexing.
+    //!
+    //! See the [`oxc_index` module-level documentation](oxc_index) for more information.
     #[doc(inline)]
     pub use oxc_index::*;
 }
 
 pub mod parser {
+    //! JavaScript/TypeScript parser.
+    //!
+    //! See the [`oxc_parser` module-level documentation](oxc_parser) for more information.
     #[doc(inline)]
     pub use oxc_parser::*;
 }
@@ -39,29 +51,45 @@ pub mod regular_expression {
 }
 
 pub mod span {
+    //! Source text Span and string types.
+    //!
+    //! See the [`oxc_span` module-level documentation](oxc_span) for more information.
     #[doc(inline)]
     pub use oxc_span::*;
 }
 
 pub mod syntax {
+    //! Common code for JavaScript Syntax
+    //!
+    //! See the [`oxc_syntax` module-level documentation](oxc_syntax) for more information.
     #[doc(inline)]
     pub use oxc_syntax::*;
 }
 
 #[cfg(feature = "semantic")]
 pub mod semantic {
+    //! Semantic analysis of a JavaScript/TypeScript program.
+    //!
+    //! See the [`oxc_semantic` module-level documentation](oxc_semantic) for more information.
     #[doc(inline)]
     pub use oxc_semantic::*;
 }
 
 #[cfg(feature = "transformer")]
 pub mod transformer {
+    //! Transformer/Transpiler
+    //!
+    //! See the [`oxc_transformer` module-level documentation](oxc_transformer) for more
+    //! information.
     #[doc(inline)]
     pub use oxc_transformer::*;
 }
 
 #[cfg(feature = "minifier")]
 pub mod minifier {
+    //! Source code minifier.
+    //!
+    //! See the [`oxc_minifier` module-level documentation](oxc_minifier) for more information.
     #[doc(inline)]
     pub use oxc_minifier::*;
 }
@@ -74,18 +102,28 @@ pub mod mangler {
 
 #[cfg(feature = "codegen")]
 pub mod codegen {
+    //! AST code printer
+    //!
+    //! See the [`oxc_codegen` module-level documentation](oxc_codegen) for more information.
     #[doc(inline)]
     pub use oxc_codegen::*;
 }
 
 #[cfg(feature = "isolated_declarations")]
 pub mod isolated_declarations {
+    //! `.d.ts` emit for Isolated Declarations.
+    //!
+    //! See the [`oxc_isolated_declarations` module-level documentation](oxc_isolated_declarations)
+    //! for more information.
     #[doc(inline)]
     pub use oxc_isolated_declarations::*;
 }
 
 #[cfg(feature = "sourcemap")]
 pub mod sourcemap {
+    //! Source Maps
+    //!
+    //! See the [`oxc_sourcemap` module-level documentation](oxc_sourcemap) for more information.
     #[doc(inline)]
     pub use oxc_sourcemap::*;
 }