Implement latex fragment.

src/wasm/latex_fragment.rs

@@ -4,15 +4,13 @@ use serde::Serialize;
 use super::ast_node::WasmAstNode;
 use super::macros::to_wasm;
 use super::to_wasm::ToWasm;
-use super::AdditionalProperties;
 use crate::compare::ElispFact;
 use crate::types::LatexFragment;
 use crate::wasm::to_wasm::ToWasmStandardProperties;
 
 #[derive(Debug, Serialize, Deserialize)]
 pub struct WasmLatexFragment {
-    #[serde(flatten)]
-    pub(crate) additional_properties: AdditionalProperties,
+    pub(crate) value: String,
 }
 
 to_wasm!(
@@ -21,12 +19,12 @@ to_wasm!(
     original,
     wasm_context,
     { WasmAstNode::LatexFragment(original) },
-    { "TODO".into() },
+    { "latex-fragment".into() },
     {
         Ok((
             Vec::new(),
             WasmLatexFragment {
-                additional_properties: AdditionalProperties::default(),
+                value: original.value.to_owned(),
             },
         ))
     }