wit async func wit2ts error

[lamb]

world calculator {
	use types.{ operation, error-code };
	import log: func(msg: string);

	export calc: func(o: operation) -> result<u32, error-code>;
	export get: async func() -> string;
}

wasm-component-model@1.0.0 generate:model

wit2ts --outDir ./src ./wit

Debugger attached.
Failed to process document
TypeError: Cannot read properties of undefined (reading 'world')
at Object.isWorld (/Users/lamb/Downloads/vscode-extension-samples-main/wasm-component-model/node_modules/@vscode/wasm-component-model/lib/tools/wit-json.js:146:29)
at SymbolTable.resolveOwner (/Users/lamb/Downloads/vscode-extension-samples-main/wasm-component-model/node_modules/@vscode/wasm-component-model/lib/tools/wit2ts.js:702:30)
at WorldExportFunctionEmitter.getOwner (/Users/lamb/Downloads/vscode-extension-samples-main/wasm-component-model/node_modules/@vscode/wasm-component-model/lib/tools/wit2ts.js:2789:60)
at new MemberEmitter (/Users/lamb/Downloads/vscode-extension-samples-main/wasm-component-model/node_modules/@vscode/wasm-component-model/lib/tools/wit2ts.js:2767:27)
at new FunctionEmitter (/Users/lamb/Downloads/vscode-extension-samples-main/wasm-component-model/node_modules/@vscode/wasm-component-model/lib/tools/wit2ts.js:2852:9)
at new WorldExportFunctionEmitter (/Users/lamb/Downloads/vscode-extension-samples-main/wasm-component-model/node_modules/@vscode/wasm-component-model/lib/tools/wit2ts.js:2903:9)
at new (/Users/lamb/Downloads/vscode-extension-samples-main/wasm-component-model/node_modules/@vscode/wasm-component-model/lib/tools/wit2ts.js:3684:13)
at WorldEmitter.build (/Users/lamb/Downloads/vscode-extension-samples-main/wasm-component-model/node_modules/@vscode/wasm-component-model/lib/tools/wit2ts.js:2057:48)
at PackageEmitter.build (/Users/lamb/Downloads/vscode-extension-samples-main/wasm-component-model/node_modules/@vscode/wasm-component-model/lib/tools/wit2ts.js:1889:21)
at DocumentEmitter.build (/Users/lamb/Downloads/vscode-extension-samples-main/wasm-component-model/node_modules/@vscode/wasm-component-model/lib/tools/wit2ts.js:1797:24)