diff --git a/.esbuild/build.ts b/.esbuild/build.ts
index 3e829d7193..3c87f9d621 100644
--- a/.esbuild/build.ts
+++ b/.esbuild/build.ts
@@ -1,8 +1,8 @@
 import { build } from 'esbuild';
 import { mkdir, writeFile } from 'node:fs/promises';
-import { MermaidBuildOptions, defaultOptions, getBuildConfig } from './util.js';
 import { packageOptions } from '../.build/common.js';
 import { generateLangium } from '../.build/generateLangium.js';
+import { MermaidBuildOptions, defaultOptions, getBuildConfig } from './util.js';
 
 const shouldVisualize = process.argv.includes('--visualize');
 
@@ -56,7 +56,7 @@ const main = async () => {
   await generateLangium();
   await mkdir('stats').catch(() => {});
   const packageNames = Object.keys(packageOptions) as (keyof typeof packageOptions)[];
-  // it should build `parser` before `mermaid` because it's a dependecy
+  // it should build `parser` before `mermaid` because it's a dependency
   for (const pkg of packageNames) {
     await buildPackage(pkg).catch(handler);
   }
diff --git a/packages/mermaid/src/diagrams/packet/db.ts b/packages/mermaid/src/diagrams/packet/db.ts
index a40b71724d..d7b5504723 100644
--- a/packages/mermaid/src/diagrams/packet/db.ts
+++ b/packages/mermaid/src/diagrams/packet/db.ts
@@ -11,7 +11,7 @@ import {
   setAccTitle,
   setDiagramTitle,
 } from '../common/commonDb.js';
-import type { PacketDB, PacketData, Row } from './types.js';
+import type { PacketDB, PacketData, PacketWord } from './types.js';
 
 const defaultPacketData: PacketData = {
   packet: [],
@@ -32,9 +32,9 @@ const getConfig = (): Required<PacketDiagramConfig> => {
   return config;
 };
 
-const getPacket = (): Row[] => data.packet;
+const getPacket = (): PacketWord[] => data.packet;
 
-const pushWord = (word: Row) => {
+const pushWord = (word: PacketWord) => {
   if (word.length > 0) {
     data.packet.push(word);
   }
diff --git a/packages/mermaid/src/diagrams/packet/parser.ts b/packages/mermaid/src/diagrams/packet/parser.ts
index c0e9e12a08..fa90444df2 100644
--- a/packages/mermaid/src/diagrams/packet/parser.ts
+++ b/packages/mermaid/src/diagrams/packet/parser.ts
@@ -4,14 +4,14 @@ import type { ParserDefinition } from '../../diagram-api/types.js';
 import { log } from '../../logger.js';
 import { populateCommonDb } from '../common/populateCommonDb.js';
 import { db } from './db.js';
-import type { Block, Row } from './types.js';
+import type { PacketBlock, PacketWord } from './types.js';
 
 const maxPacketSize = 10_000;
 
 const populate = (ast: Packet) => {
   populateCommonDb(ast, db);
   let lastByte = -1;
-  let word: Row = [];
+  let word: PacketWord = [];
   let row = 1;
   const { bitsPerRow } = db.getConfig();
   for (let { start, end, label } of ast.blocks) {
@@ -46,10 +46,10 @@ const populate = (ast: Packet) => {
 };
 
 const getNextFittingBlock = (
-  block: Block,
+  block: PacketBlock,
   row: number,
   bitsPerRow: number
-): [Required<Block>, Block | undefined] => {
+): [Required<PacketBlock>, PacketBlock | undefined] => {
   if (block.end === undefined) {
     block.end = block.start;
   }
@@ -59,7 +59,7 @@ const getNextFittingBlock = (
   }
 
   if (block.end + 1 <= row * bitsPerRow) {
-    return [block as Required<Block>, undefined];
+    return [block as Required<PacketBlock>, undefined];
   }
 
   return [
diff --git a/packages/mermaid/src/diagrams/packet/renderer.ts b/packages/mermaid/src/diagrams/packet/renderer.ts
index c4547fd80d..21b941a172 100644
--- a/packages/mermaid/src/diagrams/packet/renderer.ts
+++ b/packages/mermaid/src/diagrams/packet/renderer.ts
@@ -3,7 +3,7 @@ import type { PacketDiagramConfig } from '../../config.type.js';
 import type { DiagramRenderer, DrawDefinition, Group, SVG } from '../../diagram-api/types.js';
 import { selectSvgElement } from '../../rendering-util/selectSvgElement.js';
 import { configureSvgSize } from '../../setupGraphViewbox.js';
-import type { PacketDB, Row } from './types.js';
+import type { PacketDB, PacketWord } from './types.js';
 
 // eslint-disable-next-line @typescript-eslint/no-unused-vars
 const draw: DrawDefinition = (_text, id, _version, diagram: Diagram) => {
@@ -36,13 +36,13 @@ const draw: DrawDefinition = (_text, id, _version, diagram: Diagram) => {
 
 const drawWord = (
   svg: SVG,
-  row: Row,
+  word: PacketWord,
   rowNumber: number,
   { rowHeight, paddingX, paddingY, bitWidth, bitsPerRow, showBits }: Required<PacketDiagramConfig>
 ) => {
   const group: Group = svg.append('g');
   const wordY = rowNumber * (rowHeight + paddingY) + paddingY;
-  for (const block of row) {
+  for (const block of word) {
     const blockX = (block.start % bitsPerRow) * bitWidth + 1;
     const width = (block.end - block.start + 1) * bitWidth - paddingX;
     // Block rectangle
diff --git a/packages/mermaid/src/diagrams/packet/types.ts b/packages/mermaid/src/diagrams/packet/types.ts
index 0a4507076d..bbb87db698 100644
--- a/packages/mermaid/src/diagrams/packet/types.ts
+++ b/packages/mermaid/src/diagrams/packet/types.ts
@@ -1,14 +1,14 @@
-import type { Packet } from 'mermaid-parser';
+import type { Packet, RecursiveAstOmit } from 'mermaid-parser';
 import type { PacketDiagramConfig } from '../../config.type.js';
 import type { DiagramDBBase } from '../../diagram-api/types.js';
+import type { ArrayElement } from '../../types.js';
 
-export type ArrayElement<A> = A extends readonly (infer T)[] ? T : never;
-export type Block = Pick<ArrayElement<Packet['blocks']>, 'start' | 'end' | 'label'>;
-export type Row = Required<Block>[];
+export type PacketBlock = RecursiveAstOmit<ArrayElement<Packet['blocks']>>;
+export type PacketWord = Required<PacketBlock>[];
 
 export interface PacketDB extends DiagramDBBase<PacketDiagramConfig> {
-  pushWord: (word: Row) => void;
-  getPacket: () => Row[];
+  pushWord: (word: PacketWord) => void;
+  getPacket: () => PacketWord[];
 }
 
 export interface PacketStyleOptions {
@@ -25,5 +25,5 @@ export interface PacketStyleOptions {
 }
 
 export interface PacketData {
-  packet: Row[];
+  packet: PacketWord[];
 }
diff --git a/packages/mermaid/src/types.ts b/packages/mermaid/src/types.ts
index 13da885033..487e089dce 100644
--- a/packages/mermaid/src/types.ts
+++ b/packages/mermaid/src/types.ts
@@ -32,3 +32,5 @@ export interface EdgeData {
   labelStyle: string;
   curve: any;
 }
+
+export type ArrayElement<A> = A extends readonly (infer T)[] ? T : never;
diff --git a/packages/parser/src/index.ts b/packages/parser/src/index.ts
index 9ec6b4e9b9..c72b4fcb6e 100644
--- a/packages/parser/src/index.ts
+++ b/packages/parser/src/index.ts
@@ -1,3 +1,12 @@
+import type { AstNode } from 'langium';
+
 export type { Info, Packet } from './language/index.js';
+export { MermaidParseError, parse } from './parse.js';
 export type { DiagramAST } from './parse.js';
-export { parse, MermaidParseError } from './parse.js';
+
+/**
+ * Exclude/omit all `AstNode` attributes recursively.
+ */
+export type RecursiveAstOmit<T> = T extends object
+  ? { [P in keyof T as Exclude<P, keyof AstNode>]: RecursiveAstOmit<T[P]> }
+  : T;