From 4c9f54e0a697a1beeabcdaf551e076e35a403ce9 Mon Sep 17 00:00:00 2001
From: "douboer@gmail.com" <gavin@gavin-mac-mini.local>
Date: Sat, 14 Feb 2026 10:55:14 +0800
Subject: [PATCH] update at 2026-02-14 10:55:14

---
 miniapp/utils/sankey.js |  7 +++++--
 src/core/parser.ts      |  2 +-
 tests/core.spec.ts      | 33 +++++++++++++++++++++++++++++++++
 tests/miniapp.spec.ts   | 33 +++++++++++++++++++++++++++++++++
 4 files changed, 72 insertions(+), 3 deletions(-)

diff --git a/miniapp/utils/sankey.js b/miniapp/utils/sankey.js
index d5001cc..3b557fe 100644
--- a/miniapp/utils/sankey.js
+++ b/miniapp/utils/sankey.js
@@ -2,7 +2,10 @@
  * 统一清洗文本，避免空格导致节点重复。
  */
 function normalizeText(value) {
-  return String(value || '').trim();
+  if (value === null || value === undefined) {
+    return '';
+  }
+  return String(value).trim();
 }
 
 /**
@@ -236,7 +239,7 @@ function parseXlsxBuffer(buffer) {
   const rows = xlsx.utils.sheet_to_json(sheet, {
     header: 1,
     raw: false,
-    defval: ''
+    blankrows: false
   });
   return toRawTable(rows);
 }
diff --git a/src/core/parser.ts b/src/core/parser.ts
index 85725cf..e7ce0d2 100644
--- a/src/core/parser.ts
+++ b/src/core/parser.ts
@@ -71,7 +71,7 @@ export function parseXlsxBuffer(buffer: ArrayBuffer): RawTable {
   const rows = XLSX.utils.sheet_to_json<unknown[]>(sheet, {
     header: 1,
     raw: false,
-    defval: ''
+    blankrows: false
   });
 
   return toRawTable(rows);
diff --git a/tests/core.spec.ts b/tests/core.spec.ts
index f418b7b..914ca41 100644
--- a/tests/core.spec.ts
+++ b/tests/core.spec.ts
@@ -1,6 +1,7 @@
 import { readFileSync } from 'node:fs';
 import { resolve } from 'node:path';
 import { describe, expect, it } from 'vitest';
+import * as XLSX from 'xlsx';
 import { buildSankeyData, parseCsvText, parseXlsxBuffer } from '../src/core';
 
 describe('core parser & sankey', () => {
@@ -45,6 +46,38 @@ describe('core parser & sankey', () => {
     expect(table.rows.length).toBeGreaterThan(0);
   });
 
+  it('xlsx !ref 范围虚高时，不应错误膨胀行列数量', () => {
+    const sheet = XLSX.utils.aoa_to_sheet([
+      ['source', 'target', 'value'],
+      ['A', 'B', 1]
+    ]);
+    sheet['!ref'] = 'A1:H20';
+    const workbook = XLSX.utils.book_new();
+    XLSX.utils.book_append_sheet(workbook, sheet, 'S1');
+    const buffer = XLSX.write(workbook, { bookType: 'xlsx', type: 'buffer' });
+    const table = parseXlsxBuffer(
+      buffer.buffer.slice(buffer.byteOffset, buffer.byteOffset + buffer.byteLength)
+    );
+
+    expect(table.headers).toEqual(['source', 'target', 'value']);
+    expect(table.rows).toEqual([['A', 'B', '1']]);
+  });
+
+  it('xlsx 中 0 值应被正确保留', () => {
+    const sheet = XLSX.utils.aoa_to_sheet([
+      ['source', 'target', 'value'],
+      ['A', 'B', 0]
+    ]);
+    const workbook = XLSX.utils.book_new();
+    XLSX.utils.book_append_sheet(workbook, sheet, 'S1');
+    const buffer = XLSX.write(workbook, { bookType: 'xlsx', type: 'buffer' });
+    const table = parseXlsxBuffer(
+      buffer.buffer.slice(buffer.byteOffset, buffer.byteOffset + buffer.byteLength)
+    );
+
+    expect(table.rows).toEqual([['A', 'B', '0']]);
+  });
+
   it('源数据非法时，告警包含单元格内容和位置', () => {
     const table = {
       headers: ['source', 'value', 'target'],
diff --git a/tests/miniapp.spec.ts b/tests/miniapp.spec.ts
index 631353d..4b7cda8 100644
--- a/tests/miniapp.spec.ts
+++ b/tests/miniapp.spec.ts
@@ -2,6 +2,7 @@ import { readFileSync } from 'node:fs';
 import { createRequire } from 'node:module';
 import { resolve } from 'node:path';
 import { describe, expect, it } from 'vitest';
+import * as XLSX from 'xlsx';
 
 const require = createRequire(import.meta.url);
 const { parseTableByFileName, parseXlsxBuffer } = require('../miniapp/utils/sankey.js') as {
@@ -41,4 +42,36 @@ describe('miniapp utils sankey', () => {
     expect(table.headers.length).toBeGreaterThan(1);
     expect(table.rows.length).toBeGreaterThan(0);
   });
+
+  it('xlsx !ref 范围虚高时，不应错误膨胀行列数量', () => {
+    const sheet = XLSX.utils.aoa_to_sheet([
+      ['source', 'target', 'value'],
+      ['A', 'B', 1]
+    ]);
+    sheet['!ref'] = 'A1:H20';
+    const workbook = XLSX.utils.book_new();
+    XLSX.utils.book_append_sheet(workbook, sheet, 'S1');
+    const buffer = XLSX.write(workbook, { bookType: 'xlsx', type: 'buffer' });
+    const arrayBuffer = buffer.buffer.slice(buffer.byteOffset, buffer.byteOffset + buffer.byteLength);
+
+    const table = parseXlsxBuffer(arrayBuffer);
+
+    expect(table.headers).toEqual(['source', 'target', 'value']);
+    expect(table.rows).toEqual([['A', 'B', '1']]);
+  });
+
+  it('xlsx 中 0 值应被正确保留', () => {
+    const sheet = XLSX.utils.aoa_to_sheet([
+      ['source', 'target', 'value'],
+      ['A', 'B', 0]
+    ]);
+    const workbook = XLSX.utils.book_new();
+    XLSX.utils.book_append_sheet(workbook, sheet, 'S1');
+    const buffer = XLSX.write(workbook, { bookType: 'xlsx', type: 'buffer' });
+    const arrayBuffer = buffer.buffer.slice(buffer.byteOffset, buffer.byteOffset + buffer.byteLength);
+
+    const table = parseXlsxBuffer(arrayBuffer);
+
+    expect(table.rows).toEqual([['A', 'B', '0']]);
+  });
 });