🚚 ➕ add node-signpdf copy to signing packgage until npm includes fix

packages/signing/node-signpdf/dist/helpers/plainAddPlaceholder/xrefToRefMap.js

@@ -0,0 +1,54 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = void 0;
+
+var _SignPdfError = _interopRequireDefault(require("../../SignPdfError"));
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+const xrefToRefMap = xrefString => {
+  const lines = xrefString.split('\n').filter(l => l !== '');
+  let index = 0;
+  let expectedLines = 0;
+  const xref = new Map();
+  lines.forEach(line => {
+    const split = line.split(' ');
+
+    if (split.length === 2) {
+      index = parseInt(split[0]);
+      expectedLines = parseInt(split[1]);
+      return;
+    }
+
+    if (expectedLines <= 0) {
+      throw new _SignPdfError.default('Too many lines in xref table.', _SignPdfError.default.TYPE_PARSE);
+    }
+
+    expectedLines -= 1;
+    const [offset,, inUse] = split;
+
+    if (inUse.trim() === 'f') {
+      index += 1;
+      return;
+    }
+
+    if (inUse.trim() !== 'n') {
+      throw new _SignPdfError.default(`Unknown in-use flag "${inUse}". Expected "n" or "f".`, _SignPdfError.default.TYPE_PARSE);
+    }
+
+    if (!/^\d+$/.test(offset.trim())) {
+      throw new _SignPdfError.default(`Expected integer offset. Got "${offset}".`, _SignPdfError.default.TYPE_PARSE);
+    }
+
+    const storeOffset = parseInt(offset.trim());
+    xref.set(index, storeOffset);
+    index += 1;
+  });
+  return xref;
+};
+
+var _default = xrefToRefMap;
+exports.default = _default;