katex parse

src/lib/data-utils.ts

@@ -386,6 +386,7 @@ function parseRichTexts(raw: any): RichText[] {
 
     let href: string | undefined
     let mentionPageId: string | undefined
+    let equationExpression: string | undefined
 
     if (Array.isArray(decorations)) {
       for (const deco of decorations) {
@@ -418,6 +419,16 @@ function parseRichTexts(raw: any): RichText[] {
             mentionPageId =
               typeof value === 'object' && value?.id ? value.id : undefined
             break
+          case 'e': {
+            if (typeof value === 'string') {
+              equationExpression = value
+            } else if (Array.isArray(value) && typeof value[0] === 'string') {
+              equationExpression = value[0]
+            } else if (typeof text === 'string') {
+              equationExpression = text
+            }
+            break
+          }
           case 'h':
             if (typeof value === 'string') {
               annotation.Color = value
@@ -429,6 +440,27 @@ function parseRichTexts(raw: any): RichText[] {
       }
     }
 
+    if (equationExpression) {
+      const richText: RichText = {
+        Equation: { Expression: equationExpression },
+        Annotation: { ...annotation },
+        PlainText: equationExpression,
+      }
+
+      if (href) {
+        richText.Href = href
+      }
+
+      if (mentionPageId) {
+        richText.Mention = {
+          Type: 'page',
+          Page: { Id: mentionPageId },
+        }
+      }
+
+      return richText
+    }
+
     const richText = buildText(typeof text === 'string' ? text : '', href, {
       Color: annotation.Color,
       Bold: annotation.Bold,
@@ -747,6 +779,21 @@ function convertBlock(
         },
       }
     }
+    case 'equation': {
+      const expression =
+        block.properties?.title?.[0]?.[0]?.toString() ||
+        block.properties?.equation?.[0]?.[0]?.toString() ||
+        ''
+
+      if (!expression) return null
+
+      return {
+        Id: block.id,
+        Type: 'equation',
+        HasChildren: false,
+        Equation: { Expression: expression },
+      }
+    }
     case 'tweet': {
       const url = block.properties?.source?.[0]?.[0] || ''
       if (!url) return null