diff --git a/lib/xlsx/xform/book/workbook-xform.js b/lib/xlsx/xform/book/workbook-xform.js
index f8ebce597..20bc46a87 100644
--- a/lib/xlsx/xform/book/workbook-xform.js
+++ b/lib/xlsx/xform/book/workbook-xform.js
@@ -158,9 +158,16 @@ utils.inherits(WorkbookXform, BaseXform, {
return;
}
worksheet = model.worksheetHash['xl/' + rel.Target];
- worksheet.name = sheet.name;
- worksheet.id = sheet.id;
- worksheets[index++] = worksheet;
+ // If there are "chartsheets" in the file, rel.Target will
+ // come out as chartsheets/sheet1.xml or similar here, and
+ // that won't be in model.worksheetHash.
+ // As we don't have the infrastructure to support chartsheets,
+ // we will ignore them for now:
+ if (worksheet) {
+ worksheet.name = sheet.name;
+ worksheet.id = sheet.id;
+ worksheets[index++] = worksheet;
+ }
});
// reconcile print areas
diff --git a/spec/integration/data/chart-sheet.xlsx b/spec/integration/data/chart-sheet.xlsx
new file mode 100644
index 000000000..c8d7b3c01
Binary files /dev/null and b/spec/integration/data/chart-sheet.xlsx differ
diff --git a/spec/integration/worksheet.spec.js b/spec/integration/worksheet.spec.js
index 4d513aefe..f7aba7487 100644
--- a/spec/integration/worksheet.spec.js
+++ b/spec/integration/worksheet.spec.js
@@ -630,4 +630,12 @@ describe('Worksheet', function() {
});
});
});
+
+ it('Should not break when importing an Excel file that contains a chartsheet', function() {
+ return new Excel.Workbook().xlsx.readFile(path.resolve(__dirname, 'data', 'chart-sheet.xlsx'))
+ .then(function(workbook) {
+ expect(workbook).to.have.property('worksheets');
+ expect(workbook.worksheets).to.have.length(1);
+ });
+ });
});
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