This package defines tree-sitter enabled major modes for webassembly, `wat-ts-mode' and `wat-ts-wast-mode', for webassembly text format and script buffers respectively. They provides support for indentation, font-locking, imenu, and structural navigation. The tree-sitter grammars compatible with this package can be found at https://github.com/wasm-lsp/tree-sitter-wasm.