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

packages/signing/node-signpdf/dist/helpers/removeTrailingNewLine.js

@@ -0,0 +1,48 @@
+"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 sliceLastChar = (pdf, character) => {
+  const lastChar = pdf.slice(pdf.length - 1).toString();
+
+  if (lastChar === character) {
+    return pdf.slice(0, pdf.length - 1);
+  }
+
+  return pdf;
+};
+/**
+ * Removes a trailing new line if there is such.
+ *
+ * Also makes sure the file ends with an EOF line as per spec.
+ * @param {Buffer} pdf
+ * @returns {Buffer}
+ */
+
+
+const removeTrailingNewLine = pdf => {
+  if (!(pdf instanceof Buffer)) {
+    throw new _SignPdfError.default('PDF expected as Buffer.', _SignPdfError.default.TYPE_INPUT);
+  }
+
+  let output = pdf;
+  output = sliceLastChar(output, '\n');
+  output = sliceLastChar(output, '\r');
+  const lastLine = output.slice(output.length - 6).toString();
+
+  if (lastLine !== '\n%%EOF') {
+    throw new _SignPdfError.default('A PDF file must end with an EOF line.', _SignPdfError.default.TYPE_PARSE);
+  }
+
+  return output;
+};
+
+var _default = removeTrailingNewLine;
+exports.default = _default;