fix: 修复中介导入成功条数计算错误

问题：
- 导入成功条数显示为负数
- 原因：成功数量计算使用 validRecords.size() - failures.size()
- 但没有使用实际的数据库操作返回值

修复：
- saveBatchWithUpsert 和 saveBatch 方法现在返回 int
- 累加实际的数据库影响行数
- 使用 actualSuccessCount 变量跟踪真实成功数量

影响范围：
- CcdiIntermediaryPersonImportServiceImpl
- CcdiIntermediaryEntityImportServiceImpl

doc/test-data/purchase_transaction/node_modules/exceljs/lib/utils/auto-drain.js

@@ -0,0 +1,15 @@
+const {EventEmitter} = require('events');
+
+// =============================================================================
+// AutoDrain - kind of /dev/null
+class AutoDrain extends EventEmitter {
+  write(chunk) {
+    this.emit('data', chunk);
+  }
+
+  end() {
+    this.emit('end');
+  }
+}
+
+module.exports = AutoDrain;

doc/test-data/purchase_transaction/node_modules/exceljs/lib/utils/browser-buffer-decode.js

@@ -0,0 +1,14 @@
+// eslint-disable-next-line node/no-unsupported-features/node-builtins
+const textDecoder = typeof TextDecoder === 'undefined' ? null : new TextDecoder('utf-8');
+
+function bufferToString(chunk) {
+  if (typeof chunk === 'string') {
+    return chunk;
+  }
+  if (textDecoder) {
+    return textDecoder.decode(chunk);
+  }
+  return chunk.toString();
+}
+
+exports.bufferToString = bufferToString;

doc/test-data/purchase_transaction/node_modules/exceljs/lib/utils/browser-buffer-encode.js

@@ -0,0 +1,15 @@
+// eslint-disable-next-line node/no-unsupported-features/node-builtins
+const textEncoder = typeof TextEncoder === 'undefined' ? null : new TextEncoder('utf-8');
+const {Buffer} = require('buffer');
+
+function stringToBuffer(str) {
+  if (typeof str !== 'string') {
+    return str;
+  }
+  if (textEncoder) {
+    return Buffer.from(textEncoder.encode(str).buffer);
+  }
+  return Buffer.from(str);
+}
+
+exports.stringToBuffer = stringToBuffer;

doc/test-data/purchase_transaction/node_modules/exceljs/lib/utils/cell-matrix.js

@@ -0,0 +1,165 @@
+const _ = require('./under-dash');
+const colCache = require('./col-cache');
+
+class CellMatrix {
+  constructor(template) {
+    this.template = template;
+    this.sheets = {};
+  }
+
+  addCell(addressStr) {
+    this.addCellEx(colCache.decodeEx(addressStr));
+  }
+
+  getCell(addressStr) {
+    return this.findCellEx(colCache.decodeEx(addressStr), true);
+  }
+
+  findCell(addressStr) {
+    return this.findCellEx(colCache.decodeEx(addressStr), false);
+  }
+
+  findCellAt(sheetName, rowNumber, colNumber) {
+    const sheet = this.sheets[sheetName];
+    const row = sheet && sheet[rowNumber];
+    return row && row[colNumber];
+  }
+
+  addCellEx(address) {
+    if (address.top) {
+      for (let row = address.top; row <= address.bottom; row++) {
+        for (let col = address.left; col <= address.right; col++) {
+          this.getCellAt(address.sheetName, row, col);
+        }
+      }
+    } else {
+      this.findCellEx(address, true);
+    }
+  }
+
+  getCellEx(address) {
+    return this.findCellEx(address, true);
+  }
+
+  findCellEx(address, create) {
+    const sheet = this.findSheet(address, create);
+    const row = this.findSheetRow(sheet, address, create);
+    return this.findRowCell(row, address, create);
+  }
+
+  getCellAt(sheetName, rowNumber, colNumber) {
+    const sheet = this.sheets[sheetName] || (this.sheets[sheetName] = []);
+    const row = sheet[rowNumber] || (sheet[rowNumber] = []);
+    const cell =
+      row[colNumber] ||
+      (row[colNumber] = {
+        sheetName,
+        address: colCache.n2l(colNumber) + rowNumber,
+        row: rowNumber,
+        col: colNumber,
+      });
+    return cell;
+  }
+
+  removeCellEx(address) {
+    const sheet = this.findSheet(address);
+    if (!sheet) {
+      return;
+    }
+    const row = this.findSheetRow(sheet, address);
+    if (!row) {
+      return;
+    }
+    delete row[address.col];
+  }
+
+  forEachInSheet(sheetName, callback) {
+    const sheet = this.sheets[sheetName];
+    if (sheet) {
+      sheet.forEach((row, rowNumber) => {
+        if (row) {
+          row.forEach((cell, colNumber) => {
+            if (cell) {
+              callback(cell, rowNumber, colNumber);
+            }
+          });
+        }
+      });
+    }
+  }
+
+  forEach(callback) {
+    _.each(this.sheets, (sheet, sheetName) => {
+      this.forEachInSheet(sheetName, callback);
+    });
+  }
+
+  map(callback) {
+    const results = [];
+    this.forEach(cell => {
+      results.push(callback(cell));
+    });
+    return results;
+  }
+
+  findSheet(address, create) {
+    const name = address.sheetName;
+    if (this.sheets[name]) {
+      return this.sheets[name];
+    }
+    if (create) {
+      return (this.sheets[name] = []);
+    }
+    return undefined;
+  }
+
+  findSheetRow(sheet, address, create) {
+    const {row} = address;
+    if (sheet && sheet[row]) {
+      return sheet[row];
+    }
+    if (create) {
+      return (sheet[row] = []);
+    }
+    return undefined;
+  }
+
+  findRowCell(row, address, create) {
+    const {col} = address;
+    if (row && row[col]) {
+      return row[col];
+    }
+    if (create) {
+      return (row[col] = this.template
+        ? Object.assign(address, JSON.parse(JSON.stringify(this.template)))
+        : address);
+    }
+    return undefined;
+  }
+
+  spliceRows(sheetName, start, numDelete, numInsert) {
+    const sheet = this.sheets[sheetName];
+    if (sheet) {
+      const inserts = [];
+      for (let i = 0; i < numInsert; i++) {
+        inserts.push([]);
+      }
+      sheet.splice(start, numDelete, ...inserts);
+    }
+  }
+
+  spliceColumns(sheetName, start, numDelete, numInsert) {
+    const sheet = this.sheets[sheetName];
+    if (sheet) {
+      const inserts = [];
+      for (let i = 0; i < numInsert; i++) {
+        inserts.push(null);
+      }
+      _.each(sheet, row => {
+        row.splice(start, numDelete, ...inserts);
+      });
+    }
+  }
+}
+
+module.exports = CellMatrix;

doc/test-data/purchase_transaction/node_modules/exceljs/lib/utils/col-cache.js

@@ -0,0 +1,287 @@
+const addressRegex = /^[A-Z]+\d+$/;
+// =========================================================================
+// Column Letter to Number conversion
+const colCache = {
+  _dictionary: [
+    'A',
+    'B',
+    'C',
+    'D',
+    'E',
+    'F',
+    'G',
+    'H',
+    'I',
+    'J',
+    'K',
+    'L',
+    'M',
+    'N',
+    'O',
+    'P',
+    'Q',
+    'R',
+    'S',
+    'T',
+    'U',
+    'V',
+    'W',
+    'X',
+    'Y',
+    'Z',
+  ],
+  _l2nFill: 0,
+  _l2n: {},
+  _n2l: [],
+  _level(n) {
+    if (n <= 26) {
+      return 1;
+    }
+    if (n <= 26 * 26) {
+      return 2;
+    }
+    return 3;
+  },
+  _fill(level) {
+    let c;
+    let v;
+    let l1;
+    let l2;
+    let l3;
+    let n = 1;
+    if (level >= 4) {
+      throw new Error('Out of bounds. Excel supports columns from 1 to 16384');
+    }
+    if (this._l2nFill < 1 && level >= 1) {
+      while (n <= 26) {
+        c = this._dictionary[n - 1];
+        this._n2l[n] = c;
+        this._l2n[c] = n;
+        n++;
+      }
+      this._l2nFill = 1;
+    }
+    if (this._l2nFill < 2 && level >= 2) {
+      n = 27;
+      while (n <= 26 + (26 * 26)) {
+        v = n - (26 + 1);
+        l1 = v % 26;
+        l2 = Math.floor(v / 26);
+        c = this._dictionary[l2] + this._dictionary[l1];
+        this._n2l[n] = c;
+        this._l2n[c] = n;
+        n++;
+      }
+      this._l2nFill = 2;
+    }
+    if (this._l2nFill < 3 && level >= 3) {
+      n = 26 + (26 * 26) + 1;
+      while (n <= 16384) {
+        v = n - ((26 * 26) + 26 + 1);
+        l1 = v % 26;
+        l2 = Math.floor(v / 26) % 26;
+        l3 = Math.floor(v / (26 * 26));
+        c = this._dictionary[l3] + this._dictionary[l2] + this._dictionary[l1];
+        this._n2l[n] = c;
+        this._l2n[c] = n;
+        n++;
+      }
+      this._l2nFill = 3;
+    }
+  },
+  l2n(l) {
+    if (!this._l2n[l]) {
+      this._fill(l.length);
+    }
+    if (!this._l2n[l]) {
+      throw new Error(`Out of bounds. Invalid column letter: ${l}`);
+    }
+    return this._l2n[l];
+  },
+  n2l(n) {
+    if (n < 1 || n > 16384) {
+      throw new Error(`${n} is out of bounds. Excel supports columns from 1 to 16384`);
+    }
+    if (!this._n2l[n]) {
+      this._fill(this._level(n));
+    }
+    return this._n2l[n];
+  },
+
+  // =========================================================================
+  // Address processing
+  _hash: {},
+
+  // check if value looks like an address
+  validateAddress(value) {
+    if (!addressRegex.test(value)) {
+      throw new Error(`Invalid Address: ${value}`);
+    }
+    return true;
+  },
+
+  // convert address string into structure
+  decodeAddress(value) {
+    const addr = value.length < 5 && this._hash[value];
+    if (addr) {
+      return addr;
+    }
+    let hasCol = false;
+    let col = '';
+    let colNumber = 0;
+    let hasRow = false;
+    let row = '';
+    let rowNumber = 0;
+    for (let i = 0, char; i < value.length; i++) {
+      char = value.charCodeAt(i);
+      // col should before row
+      if (!hasRow && char >= 65 && char <= 90) {
+        // 65 = 'A'.charCodeAt(0)
+        // 90 = 'Z'.charCodeAt(0)
+        hasCol = true;
+        col += value[i];
+        // colNumber starts from 1
+        colNumber = (colNumber * 26) + char - 64;
+      } else if (char >= 48 && char <= 57) {
+        // 48 = '0'.charCodeAt(0)
+        // 57 = '9'.charCodeAt(0)
+        hasRow = true;
+        row += value[i];
+        // rowNumber starts from 0
+        rowNumber = (rowNumber * 10) + char - 48;
+      } else if (hasRow && hasCol && char !== 36) {
+        // 36 = '$'.charCodeAt(0)
+        break;
+      }
+    }
+    if (!hasCol) {
+      colNumber = undefined;
+    } else if (colNumber > 16384) {
+      throw new Error(`Out of bounds. Invalid column letter: ${col}`);
+    }
+    if (!hasRow) {
+      rowNumber = undefined;
+    }
+
+    // in case $row$col
+    value = col + row;
+
+    const address = {
+      address: value,
+      col: colNumber,
+      row: rowNumber,
+      $col$row: `$${col}$${row}`,
+    };
+
+    // mem fix - cache only the tl 100x100 square
+    if (colNumber <= 100 && rowNumber <= 100) {
+      this._hash[value] = address;
+      this._hash[address.$col$row] = address;
+    }
+
+    return address;
+  },
+
+  // convert r,c into structure (if only 1 arg, assume r is address string)
+  getAddress(r, c) {
+    if (c) {
+      const address = this.n2l(c) + r;
+      return this.decodeAddress(address);
+    }
+    return this.decodeAddress(r);
+  },
+
+  // convert [address], [tl:br] into address structures
+  decode(value) {
+    const parts = value.split(':');
+    if (parts.length === 2) {
+      const tl = this.decodeAddress(parts[0]);
+      const br = this.decodeAddress(parts[1]);
+      const result = {
+        top: Math.min(tl.row, br.row),
+        left: Math.min(tl.col, br.col),
+        bottom: Math.max(tl.row, br.row),
+        right: Math.max(tl.col, br.col),
+      };
+      // reconstruct tl, br and dimensions
+      result.tl = this.n2l(result.left) + result.top;
+      result.br = this.n2l(result.right) + result.bottom;
+      result.dimensions = `${result.tl}:${result.br}`;
+      return result;
+    }
+    return this.decodeAddress(value);
+  },
+
+  // convert [sheetName!][$]col[$]row[[$]col[$]row] into address or range structures
+  decodeEx(value) {
+    const groups = value.match(/(?:(?:(?:'((?:[^']|'')*)')|([^'^ !]*))!)?(.*)/);
+
+    const sheetName = groups[1] || groups[2]; // Qouted and unqouted groups
+    const reference = groups[3]; // Remaining address
+
+    const parts = reference.split(':');
+    if (parts.length > 1) {
+      let tl = this.decodeAddress(parts[0]);
+      let br = this.decodeAddress(parts[1]);
+      const top = Math.min(tl.row, br.row);
+      const left = Math.min(tl.col, br.col);
+      const bottom = Math.max(tl.row, br.row);
+      const right = Math.max(tl.col, br.col);
+
+      tl = this.n2l(left) + top;
+      br = this.n2l(right) + bottom;
+
+      return {
+        top,
+        left,
+        bottom,
+        right,
+        sheetName,
+        tl: {address: tl, col: left, row: top, $col$row: `$${this.n2l(left)}$${top}`, sheetName},
+        br: {
+          address: br,
+          col: right,
+          row: bottom,
+          $col$row: `$${this.n2l(right)}$${bottom}`,
+          sheetName,
+        },
+        dimensions: `${tl}:${br}`,
+      };
+    }
+    if (reference.startsWith('#')) {
+      return sheetName ? {sheetName, error: reference} : {error: reference};
+    }
+
+    const address = this.decodeAddress(reference);
+    return sheetName ? {sheetName, ...address} : address;
+  },
+
+  // convert row,col into address string
+  encodeAddress(row, col) {
+    return colCache.n2l(col) + row;
+  },
+
+  // convert row,col into string address or t,l,b,r into range
+  encode() {
+    switch (arguments.length) {
+      case 2:
+        return colCache.encodeAddress(arguments[0], arguments[1]);
+      case 4:
+        return `${colCache.encodeAddress(arguments[0], arguments[1])}:${colCache.encodeAddress(
+          arguments[2],
+          arguments[3]
+        )}`;
+      default:
+        throw new Error('Can only encode with 2 or 4 arguments');
+    }
+  },
+
+  // return true if address is contained within range
+  inRange(range, address) {
+    const [left, top, , right, bottom] = range;
+    const [col, row] = address;
+    return col >= left && col <= right && row >= top && row <= bottom;
+  },
+};
+
+module.exports = colCache;

doc/test-data/purchase_transaction/node_modules/exceljs/lib/utils/copy-style.js

@@ -0,0 +1,43 @@
+const oneDepthCopy = (obj, nestKeys) => ({
+  ...obj,
+  ...nestKeys.reduce((memo, key) => {
+    if (obj[key]) memo[key] = {...obj[key]};
+    return memo;
+  }, {}),
+});
+
+const setIfExists = (src, dst, key, nestKeys = []) => {
+  if (src[key]) dst[key] = oneDepthCopy(src[key], nestKeys);
+};
+
+const isEmptyObj = obj => Object.keys(obj).length === 0;
+
+const copyStyle = style => {
+  if (!style) return style;
+  if (isEmptyObj(style)) return {};
+
+  const copied = {...style};
+
+  setIfExists(style, copied, 'font', ['color']);
+  setIfExists(style, copied, 'alignment');
+  setIfExists(style, copied, 'protection');
+  if (style.border) {
+    setIfExists(style, copied, 'border');
+    setIfExists(style.border, copied.border, 'top', ['color']);
+    setIfExists(style.border, copied.border, 'left', ['color']);
+    setIfExists(style.border, copied.border, 'bottom', ['color']);
+    setIfExists(style.border, copied.border, 'right', ['color']);
+    setIfExists(style.border, copied.border, 'diagonal', ['color']);
+  }
+
+  if (style.fill) {
+    setIfExists(style, copied, 'fill', ['fgColor', 'bgColor', 'center']);
+    if (style.fill.stops) {
+      copied.fill.stops = style.fill.stops.map(s => oneDepthCopy(s, ['color']));
+    }
+  }
+
+  return copied;
+};
+
+exports.copyStyle = copyStyle;

doc/test-data/purchase_transaction/node_modules/exceljs/lib/utils/encryptor.js

@@ -0,0 +1,55 @@
+'use strict';
+
+const crypto = require('crypto');
+
+const Encryptor = {
+  /**
+   * Calculate a hash of the concatenated buffers with the given algorithm.
+   * @param {string} algorithm - The hash algorithm.
+   * @returns {Buffer} The hash
+   */
+  hash(algorithm, ...buffers) {
+    const hash = crypto.createHash(algorithm);
+    hash.update(Buffer.concat(buffers));
+    return hash.digest();
+  },
+  /**
+   * Convert a password into an encryption key
+   * @param {string} password - The password
+   * @param {string} hashAlgorithm - The hash algoritm
+   * @param {string} saltValue - The salt value
+   * @param {number} spinCount - The spin count
+   * @param {number} keyBits - The length of the key in bits
+   * @param {Buffer} blockKey - The block key
+   * @returns {Buffer} The encryption key
+   */
+  convertPasswordToHash(password, hashAlgorithm, saltValue, spinCount) {
+    hashAlgorithm = hashAlgorithm.toLowerCase();
+    const hashes = crypto.getHashes();
+    if (hashes.indexOf(hashAlgorithm) < 0) {
+      throw new Error(`Hash algorithm '${hashAlgorithm}' not supported!`);
+    }
+
+    // Password must be in unicode buffer
+    const passwordBuffer = Buffer.from(password, 'utf16le');
+    // Generate the initial hash
+    let key = this.hash(hashAlgorithm, Buffer.from(saltValue, 'base64'), passwordBuffer);
+    // Now regenerate until spin count
+    for (let i = 0; i < spinCount; i++) {
+      const iterator = Buffer.alloc(4);
+      // this is the 'special' element of Excel password hashing
+      // that stops us from using crypto.pbkdf2()
+      iterator.writeUInt32LE(i, 0);
+      key = this.hash(hashAlgorithm, key, iterator);
+    }
+    return key.toString('base64');
+  },
+  /**
+   * Generates cryptographically strong pseudo-random data.
+   * @param size The size argument is a number indicating the number of bytes to generate.
+   */
+  randomBytes(size) {
+    return crypto.randomBytes(size);
+  },
+};
+module.exports = Encryptor;

doc/test-data/purchase_transaction/node_modules/exceljs/lib/utils/iterate-stream.js

@@ -0,0 +1,48 @@
+module.exports = async function* iterateStream(stream) {
+  const contents = [];
+  stream.on('data', data => contents.push(data));
+
+  let resolveStreamEndedPromise;
+  const streamEndedPromise = new Promise(resolve => (resolveStreamEndedPromise = resolve));
+
+  let ended = false;
+  stream.on('end', () => {
+    ended = true;
+    resolveStreamEndedPromise();
+  });
+
+  let error = false;
+  stream.on('error', err => {
+    error = err;
+    resolveStreamEndedPromise();
+  });
+
+  while (!ended || contents.length > 0) {
+    if (contents.length === 0) {
+      stream.resume();
+      // eslint-disable-next-line no-await-in-loop
+      await Promise.race([once(stream, 'data'), streamEndedPromise]);
+    } else {
+      stream.pause();
+      const data = contents.shift();
+      yield data;
+    }
+    if (error) throw error;
+  }
+  resolveStreamEndedPromise();
+};
+
+function once(eventEmitter, type) {
+  // TODO: Use require('events').once when node v10 is dropped
+  return new Promise(resolve => {
+    let fired = false;
+    const handler = () => {
+      if (!fired) {
+        fired = true;
+        eventEmitter.removeListener(type, handler);
+        resolve();
+      }
+    };
+    eventEmitter.addListener(type, handler);
+  });
+}

doc/test-data/purchase_transaction/node_modules/exceljs/lib/utils/parse-sax.js

@@ -0,0 +1,30 @@
+const {SaxesParser} = require('saxes');
+const {PassThrough} = require('readable-stream');
+const {bufferToString} = require('./browser-buffer-decode');
+
+module.exports = async function* (iterable) {
+  // TODO: Remove once node v8 is deprecated
+  // Detect and upgrade old streams
+  if (iterable.pipe && !iterable[Symbol.asyncIterator]) {
+    iterable = iterable.pipe(new PassThrough());
+  }
+  const saxesParser = new SaxesParser();
+  let error;
+  saxesParser.on('error', err => {
+    error = err;
+  });
+  let events = [];
+  saxesParser.on('opentag', value => events.push({eventType: 'opentag', value}));
+  saxesParser.on('text', value => events.push({eventType: 'text', value}));
+  saxesParser.on('closetag', value => events.push({eventType: 'closetag', value}));
+  for await (const chunk of iterable) {
+    saxesParser.write(bufferToString(chunk));
+    // saxesParser.write and saxesParser.on() are synchronous,
+    // so we can only reach the below line once all events have been emitted
+    if (error) throw error;
+    // As a performance optimization, we gather all events instead of passing
+    // them one by one, which would cause each event to go through the event queue
+    yield events;
+    events = [];
+  }
+};

doc/test-data/purchase_transaction/node_modules/exceljs/lib/utils/shared-formula.js

@@ -0,0 +1,44 @@
+const colCache = require('./col-cache');
+
+// const cellRefRegex = /(([a-z_\-0-9]*)!)?[$]?([a-z]+)[$]?([1-9][0-9]*)/i;
+const replacementCandidateRx = /(([a-z_\-0-9]*)!)?([a-z0-9_$]{2,})([(])?/gi;
+const CRrx = /^([$])?([a-z]+)([$])?([1-9][0-9]*)$/i;
+
+function slideFormula(formula, fromCell, toCell) {
+  const offset = colCache.decode(fromCell);
+  const to = colCache.decode(toCell);
+  return formula.replace(
+    replacementCandidateRx,
+    (refMatch, sheet, sheetMaybe, addrPart, trailingParen) => {
+      if (trailingParen) {
+        return refMatch;
+      }
+      const match = CRrx.exec(addrPart);
+      if (match) {
+        const colDollar = match[1];
+        const colStr = match[2].toUpperCase();
+        const rowDollar = match[3];
+        const rowStr = match[4];
+        if (colStr.length > 3 || (colStr.length === 3 && colStr > 'XFD')) {
+          // > XFD is the highest col number in excel 2007 and beyond, so this is a named range
+          return refMatch;
+        }
+        let col = colCache.l2n(colStr);
+        let row = parseInt(rowStr, 10);
+        if (!colDollar) {
+          col += to.col - offset.col;
+        }
+        if (!rowDollar) {
+          row += to.row - offset.row;
+        }
+        const res = (sheet || '') + (colDollar || '') + colCache.n2l(col) + (rowDollar || '') + row;
+        return res;
+      }
+      return refMatch;
+    }
+  );
+}
+
+module.exports = {
+  slideFormula,
+};

doc/test-data/purchase_transaction/node_modules/exceljs/lib/utils/shared-strings.js

@@ -0,0 +1,35 @@
+class SharedStrings {
+  constructor() {
+    this._values = [];
+    this._totalRefs = 0;
+    this._hash = Object.create(null);
+  }
+
+  get count() {
+    return this._values.length;
+  }
+
+  get values() {
+    return this._values;
+  }
+
+  get totalRefs() {
+    return this._totalRefs;
+  }
+
+  getString(index) {
+    return this._values[index];
+  }
+
+  add(value) {
+    let index = this._hash[value];
+    if (index === undefined) {
+      index = this._hash[value] = this._values.length;
+      this._values.push(value);
+    }
+    this._totalRefs++;
+    return index;
+  }
+}
+
+module.exports = SharedStrings;

doc/test-data/purchase_transaction/node_modules/exceljs/lib/utils/stream-base64.js

@@ -0,0 +1,72 @@
+const Stream = require('readable-stream');
+
+// =============================================================================
+// StreamBase64 - A utility to convert to/from base64 stream
+// Note: does not buffer data, must be piped
+class StreamBase64 extends Stream.Duplex {
+  constructor() {
+    super();
+
+    // consuming pipe streams go here
+    this.pipes = [];
+  }
+
+  // writable
+  // event drain - if write returns false (which it won't), indicates when safe to write again.
+  // finish - end() has been called
+  // pipe(src) - pipe() has been called on readable
+  // unpipe(src) - unpipe() has been called on readable
+  // error - duh
+
+  write(/* data, encoding */) {
+    return true;
+  }
+
+  cork() {}
+
+  uncork() {}
+
+  end(/* chunk, encoding, callback */) {}
+
+  // readable
+  // event readable - some data is now available
+  // event data - switch to flowing mode - feeds chunks to handler
+  // event end - no more data
+  // event close - optional, indicates upstream close
+  // event error - duh
+  read(/* size */) {}
+
+  setEncoding(encoding) {
+    // causes stream.read or stream.on('data) to return strings of encoding instead of Buffer objects
+    this.encoding = encoding;
+  }
+
+  pause() {}
+
+  resume() {}
+
+  isPaused() {}
+
+  pipe(destination) {
+    // add destination to pipe list & write current buffer
+    this.pipes.push(destination);
+  }
+
+  unpipe(destination) {
+    // remove destination from pipe list
+    this.pipes = this.pipes.filter(pipe => pipe !== destination);
+  }
+
+  unshift(/* chunk */) {
+    // some numpty has read some data that's not for them and they want to put it back!
+    // Might implement this some day
+    throw new Error('Not Implemented');
+  }
+
+  wrap(/* stream */) {
+    // not implemented
+    throw new Error('Not Implemented');
+  }
+}
+
+module.exports = StreamBase64;

doc/test-data/purchase_transaction/node_modules/exceljs/lib/utils/stream-buf.js

@@ -0,0 +1,364 @@
+/* eslint-disable max-classes-per-file */
+const Stream = require('readable-stream');
+
+const utils = require('./utils');
+const StringBuf = require('./string-buf');
+
+// =============================================================================
+// data chunks - encapsulating incoming data
+class StringChunk {
+  constructor(data, encoding) {
+    this._data = data;
+    this._encoding = encoding;
+  }
+
+  get length() {
+    return this.toBuffer().length;
+  }
+
+  // copy to target buffer
+  copy(target, targetOffset, offset, length) {
+    return this.toBuffer().copy(target, targetOffset, offset, length);
+  }
+
+  toBuffer() {
+    if (!this._buffer) {
+      this._buffer = Buffer.from(this._data, this._encoding);
+    }
+    return this._buffer;
+  }
+}
+
+class StringBufChunk {
+  constructor(data) {
+    this._data = data;
+  }
+
+  get length() {
+    return this._data.length;
+  }
+
+  // copy to target buffer
+  copy(target, targetOffset, offset, length) {
+    // eslint-disable-next-line no-underscore-dangle
+    return this._data._buf.copy(target, targetOffset, offset, length);
+  }
+
+  toBuffer() {
+    return this._data.toBuffer();
+  }
+}
+
+class BufferChunk {
+  constructor(data) {
+    this._data = data;
+  }
+
+  get length() {
+    return this._data.length;
+  }
+
+  // copy to target buffer
+  copy(target, targetOffset, offset, length) {
+    this._data.copy(target, targetOffset, offset, length);
+  }
+
+  toBuffer() {
+    return this._data;
+  }
+}
+
+// =============================================================================
+// ReadWriteBuf - a single buffer supporting simple read-write
+class ReadWriteBuf {
+  constructor(size) {
+    this.size = size;
+    // the buffer
+    this.buffer = Buffer.alloc(size);
+    // read index
+    this.iRead = 0;
+    // write index
+    this.iWrite = 0;
+  }
+
+  toBuffer() {
+    if (this.iRead === 0 && this.iWrite === this.size) {
+      return this.buffer;
+    }
+
+    const buf = Buffer.alloc(this.iWrite - this.iRead);
+    this.buffer.copy(buf, 0, this.iRead, this.iWrite);
+    return buf;
+  }
+
+  get length() {
+    return this.iWrite - this.iRead;
+  }
+
+  get eod() {
+    return this.iRead === this.iWrite;
+  }
+
+  get full() {
+    return this.iWrite === this.size;
+  }
+
+  read(size) {
+    let buf;
+    // read size bytes from buffer and return buffer
+    if (size === 0) {
+      // special case - return null if no data requested
+      return null;
+    }
+
+    if (size === undefined || size >= this.length) {
+      // if no size specified or size is at least what we have then return all of the bytes
+      buf = this.toBuffer();
+      this.iRead = this.iWrite;
+      return buf;
+    }
+
+    // otherwise return a chunk
+    buf = Buffer.alloc(size);
+    this.buffer.copy(buf, 0, this.iRead, size);
+    this.iRead += size;
+    return buf;
+  }
+
+  write(chunk, offset, length) {
+    // write as many bytes from data from optional source offset
+    // and return number of bytes written
+    const size = Math.min(length, this.size - this.iWrite);
+    chunk.copy(this.buffer, this.iWrite, offset, offset + size);
+    this.iWrite += size;
+    return size;
+  }
+}
+
+// =============================================================================
+// StreamBuf - a multi-purpose read-write stream
+//  As MemBuf - write as much data as you like. Then call toBuffer() to consolidate
+//  As StreamHub - pipe to multiple writables
+//  As readable stream - feed data into the writable part and have some other code read from it.
+
+// Note: Not sure why but StreamBuf does not like JS "class" sugar. It fails the
+// integration tests
+const StreamBuf = function(options) {
+  options = options || {};
+  this.bufSize = options.bufSize || 1024 * 1024;
+  this.buffers = [];
+
+  // batch mode fills a buffer completely before passing the data on
+  // to pipes or 'readable' event listeners
+  this.batch = options.batch || false;
+
+  this.corked = false;
+  // where in the current writable buffer we're up to
+  this.inPos = 0;
+
+  // where in the current readable buffer we've read up to
+  this.outPos = 0;
+
+  // consuming pipe streams go here
+  this.pipes = [];
+
+  // controls emit('data')
+  this.paused = false;
+
+  this.encoding = null;
+};
+
+utils.inherits(StreamBuf, Stream.Duplex, {
+  toBuffer() {
+    switch (this.buffers.length) {
+      case 0:
+        return null;
+      case 1:
+        return this.buffers[0].toBuffer();
+      default:
+        return Buffer.concat(this.buffers.map(rwBuf => rwBuf.toBuffer()));
+    }
+  },
+
+  // writable
+  // event drain - if write returns false (which it won't), indicates when safe to write again.
+  // finish - end() has been called
+  // pipe(src) - pipe() has been called on readable
+  // unpipe(src) - unpipe() has been called on readable
+  // error - duh
+
+  _getWritableBuffer() {
+    if (this.buffers.length) {
+      const last = this.buffers[this.buffers.length - 1];
+      if (!last.full) {
+        return last;
+      }
+    }
+    const buf = new ReadWriteBuf(this.bufSize);
+    this.buffers.push(buf);
+    return buf;
+  },
+
+  async _pipe(chunk) {
+    const write = function(pipe) {
+      return new Promise(resolve => {
+        pipe.write(chunk.toBuffer(), () => {
+          resolve();
+        });
+      });
+    };
+    await Promise.all(this.pipes.map(write));
+  },
+  _writeToBuffers(chunk) {
+    let inPos = 0;
+    const inLen = chunk.length;
+    while (inPos < inLen) {
+      // find writable buffer
+      const buffer = this._getWritableBuffer();
+
+      // write some data
+      inPos += buffer.write(chunk, inPos, inLen - inPos);
+    }
+  },
+  async write(data, encoding, callback) {
+    if (encoding instanceof Function) {
+      callback = encoding;
+      encoding = 'utf8';
+    }
+    callback = callback || utils.nop;
+
+    // encapsulate data into a chunk
+    let chunk;
+    if (data instanceof StringBuf) {
+      chunk = new StringBufChunk(data);
+    } else if (data instanceof Buffer) {
+      chunk = new BufferChunk(data);
+    } else if (typeof data === 'string' || data instanceof String || data instanceof ArrayBuffer) {
+      chunk = new StringChunk(data, encoding);
+    } else {
+      throw new Error('Chunk must be one of type String, Buffer or StringBuf.');
+    }
+
+    // now, do something with the chunk
+    if (this.pipes.length) {
+      if (this.batch) {
+        this._writeToBuffers(chunk);
+        while (!this.corked && this.buffers.length > 1) {
+          this._pipe(this.buffers.shift());
+        }
+      } else if (!this.corked) {
+        await this._pipe(chunk);
+        callback();
+      } else {
+        this._writeToBuffers(chunk);
+        process.nextTick(callback);
+      }
+    } else {
+      if (!this.paused) {
+        this.emit('data', chunk.toBuffer());
+      }
+
+      this._writeToBuffers(chunk);
+      this.emit('readable');
+    }
+
+    return true;
+  },
+  cork() {
+    this.corked = true;
+  },
+  _flush(/* destination */) {
+    // if we have comsumers...
+    if (this.pipes.length) {
+      // and there's stuff not written
+      while (this.buffers.length) {
+        this._pipe(this.buffers.shift());
+      }
+    }
+  },
+  uncork() {
+    this.corked = false;
+    this._flush();
+  },
+  end(chunk, encoding, callback) {
+    const writeComplete = error => {
+      if (error) {
+        callback(error);
+      } else {
+        this._flush();
+        this.pipes.forEach(pipe => {
+          pipe.end();
+        });
+        this.emit('finish');
+      }
+    };
+    if (chunk) {
+      this.write(chunk, encoding, writeComplete);
+    } else {
+      writeComplete();
+    }
+  },
+
+  // readable
+  // event readable - some data is now available
+  // event data - switch to flowing mode - feeds chunks to handler
+  // event end - no more data
+  // event close - optional, indicates upstream close
+  // event error - duh
+  read(size) {
+    let buffers;
+    // read min(buffer, size || infinity)
+    if (size) {
+      buffers = [];
+      while (size && this.buffers.length && !this.buffers[0].eod) {
+        const first = this.buffers[0];
+        const buffer = first.read(size);
+        size -= buffer.length;
+        buffers.push(buffer);
+        if (first.eod && first.full) {
+          this.buffers.shift();
+        }
+      }
+      return Buffer.concat(buffers);
+    }
+
+    buffers = this.buffers.map(buf => buf.toBuffer()).filter(Boolean);
+    this.buffers = [];
+    return Buffer.concat(buffers);
+  },
+  setEncoding(encoding) {
+    // causes stream.read or stream.on('data) to return strings of encoding instead of Buffer objects
+    this.encoding = encoding;
+  },
+  pause() {
+    this.paused = true;
+  },
+  resume() {
+    this.paused = false;
+  },
+  isPaused() {
+    return !!this.paused;
+  },
+  pipe(destination) {
+    // add destination to pipe list & write current buffer
+    this.pipes.push(destination);
+    if (!this.paused && this.buffers.length) {
+      this.end();
+    }
+  },
+  unpipe(destination) {
+    // remove destination from pipe list
+    this.pipes = this.pipes.filter(pipe => pipe !== destination);
+  },
+  unshift(/* chunk */) {
+    // some numpty has read some data that's not for them and they want to put it back!
+    // Might implement this some day
+    throw new Error('Not Implemented');
+  },
+  wrap(/* stream */) {
+    // not implemented
+    throw new Error('Not Implemented');
+  },
+});
+
+module.exports = StreamBuf;

doc/test-data/purchase_transaction/node_modules/exceljs/lib/utils/string-buf.js

@@ -0,0 +1,82 @@
+// StringBuf - a way to keep string memory operations to a minimum
+// while building the strings for the xml files
+class StringBuf {
+  constructor(options) {
+    this._buf = Buffer.alloc((options && options.size) || 16384);
+    this._encoding = (options && options.encoding) || 'utf8';
+
+    // where in the buffer we are at
+    this._inPos = 0;
+
+    // for use by toBuffer()
+    this._buffer = undefined;
+  }
+
+  get length() {
+    return this._inPos;
+  }
+
+  get capacity() {
+    return this._buf.length;
+  }
+
+  get buffer() {
+    return this._buf;
+  }
+
+  toBuffer() {
+    // return the current data as a single enclosing buffer
+    if (!this._buffer) {
+      this._buffer = Buffer.alloc(this.length);
+      this._buf.copy(this._buffer, 0, 0, this.length);
+    }
+    return this._buffer;
+  }
+
+  reset(position) {
+    position = position || 0;
+    this._buffer = undefined;
+    this._inPos = position;
+  }
+
+  _grow(min) {
+    let size = this._buf.length * 2;
+    while (size < min) {
+      size *= 2;
+    }
+    const buf = Buffer.alloc(size);
+    this._buf.copy(buf, 0);
+    this._buf = buf;
+  }
+
+  addText(text) {
+    this._buffer = undefined;
+
+    let inPos = this._inPos + this._buf.write(text, this._inPos, this._encoding);
+
+    // if we've hit (or nearing capacity), grow the buf
+    while (inPos >= this._buf.length - 4) {
+      this._grow(this._inPos + text.length);
+
+      // keep trying to write until we've completely written the text
+      inPos = this._inPos + this._buf.write(text, this._inPos, this._encoding);
+    }
+
+    this._inPos = inPos;
+  }
+
+  addStringBuf(inBuf) {
+    if (inBuf.length) {
+      this._buffer = undefined;
+
+      if (this.length + inBuf.length > this.capacity) {
+        this._grow(this.length + inBuf.length);
+      }
+      // eslint-disable-next-line no-underscore-dangle
+      inBuf._buf.copy(this._buf, this._inPos, 0, inBuf.length);
+      this._inPos += inBuf.length;
+    }
+  }
+}
+
+module.exports = StringBuf;

doc/test-data/purchase_transaction/node_modules/exceljs/lib/utils/string-builder.js

@@ -0,0 +1,35 @@
+// StringBuilder - a way to keep string memory operations to a minimum
+// while building the strings for the xml files
+class StringBuilder {
+  constructor() {
+    this.reset();
+  }
+
+  get length() {
+    return this._buf.length;
+  }
+
+  toString() {
+    return this._buf.join('');
+  }
+
+  reset(position) {
+    if (position) {
+      while (this._buf.length > position) {
+        this._buf.pop();
+      }
+    } else {
+      this._buf = [];
+    }
+  }
+
+  addText(text) {
+    this._buf.push(text);
+  }
+
+  addStringBuf(inBuf) {
+    this._buf.push(inBuf.toString());
+  }
+}
+
+module.exports = StringBuilder;

doc/test-data/purchase_transaction/node_modules/exceljs/lib/utils/stuttered-pipe.js

@@ -0,0 +1,67 @@
+const events = require('events');
+
+// =============================================================================
+// StutteredPipe - Used to slow down streaming so GC can get a look in
+class StutteredPipe extends events.EventEmitter {
+  constructor(readable, writable, options) {
+    super();
+
+    options = options || {};
+
+    this.readable = readable;
+    this.writable = writable;
+    this.bufSize = options.bufSize || 16384;
+    this.autoPause = options.autoPause || false;
+
+    this.paused = false;
+    this.eod = false;
+    this.scheduled = null;
+
+    readable.on('end', () => {
+      this.eod = true;
+      writable.end();
+    });
+
+    // need to have some way to communicate speed of stream
+    // back from the consumer
+    readable.on('readable', () => {
+      if (!this.paused) {
+        this.resume();
+      }
+    });
+    this._schedule();
+  }
+
+  pause() {
+    this.paused = true;
+  }
+
+  resume() {
+    if (!this.eod) {
+      if (this.scheduled !== null) {
+        clearImmediate(this.scheduled);
+      }
+      this._schedule();
+    }
+  }
+
+  _schedule() {
+    this.scheduled = setImmediate(() => {
+      this.scheduled = null;
+      if (!this.eod && !this.paused) {
+        const data = this.readable.read(this.bufSize);
+        if (data && data.length) {
+          this.writable.write(data);
+
+          if (!this.paused && !this.autoPause) {
+            this._schedule();
+          }
+        } else if (!this.paused) {
+          this._schedule();
+        }
+      }
+    });
+  }
+}
+
+module.exports = StutteredPipe;

doc/test-data/purchase_transaction/node_modules/exceljs/lib/utils/typed-stack.js

@@ -0,0 +1,24 @@
+class TypedStack {
+  constructor(type) {
+    this._type = type;
+    this._stack = [];
+  }
+
+  get size() {
+    return this._stack.length;
+  }
+
+  pop() {
+    const tos = this._stack.pop();
+    return tos || new this._type();
+  }
+
+  push(instance) {
+    if (!(instance instanceof this._type)) {
+      throw new Error('Invalid type pushed to TypedStack');
+    }
+    this._stack.push(instance);
+  }
+}
+
+module.exports = TypedStack;

doc/test-data/purchase_transaction/node_modules/exceljs/lib/utils/under-dash.js

@@ -0,0 +1,184 @@
+const {toString} = Object.prototype;
+const escapeHtmlRegex = /["&<>]/;
+const _ = {
+  each: function each(obj, cb) {
+    if (obj) {
+      if (Array.isArray(obj)) {
+        obj.forEach(cb);
+      } else {
+        Object.keys(obj).forEach(key => {
+          cb(obj[key], key);
+        });
+      }
+    }
+  },
+
+  some: function some(obj, cb) {
+    if (obj) {
+      if (Array.isArray(obj)) {
+        return obj.some(cb);
+      }
+      return Object.keys(obj).some(key => cb(obj[key], key));
+    }
+    return false;
+  },
+
+  every: function every(obj, cb) {
+    if (obj) {
+      if (Array.isArray(obj)) {
+        return obj.every(cb);
+      }
+      return Object.keys(obj).every(key => cb(obj[key], key));
+    }
+    return true;
+  },
+
+  map: function map(obj, cb) {
+    if (obj) {
+      if (Array.isArray(obj)) {
+        return obj.map(cb);
+      }
+      return Object.keys(obj).map(key => cb(obj[key], key));
+    }
+    return [];
+  },
+
+  keyBy(a, p) {
+    return a.reduce((o, v) => {
+      o[v[p]] = v;
+      return o;
+    }, {});
+  },
+
+  isEqual: function isEqual(a, b) {
+    const aType = typeof a;
+    const bType = typeof b;
+    const aArray = Array.isArray(a);
+    const bArray = Array.isArray(b);
+    let keys;
+
+    if (aType !== bType) {
+      return false;
+    }
+    switch (typeof a) {
+      case 'object':
+        if (aArray || bArray) {
+          if (aArray && bArray) {
+            return (
+              a.length === b.length &&
+              a.every((aValue, index) => {
+                const bValue = b[index];
+                return _.isEqual(aValue, bValue);
+              })
+            );
+          }
+          return false;
+        }
+
+        if (a === null || b === null) {
+          return a === b;
+        }
+
+        // Compare object keys and values
+        keys = Object.keys(a);
+
+        if (Object.keys(b).length !== keys.length) {
+          return false;
+        }
+
+        for (const key of keys) {
+          if (!b.hasOwnProperty(key)) {
+            return false;
+          }
+        }
+
+        return _.every(a, (aValue, key) => {
+          const bValue = b[key];
+          return _.isEqual(aValue, bValue);
+        });
+
+      default:
+        return a === b;
+    }
+  },
+
+  escapeHtml(html) {
+    const regexResult = escapeHtmlRegex.exec(html);
+    if (!regexResult) return html;
+
+    let result = '';
+    let escape = '';
+    let lastIndex = 0;
+    let i = regexResult.index;
+    for (; i < html.length; i++) {
+      switch (html.charAt(i)) {
+        case '"':
+          escape = '&quot;';
+          break;
+        case '&':
+          escape = '&amp;';
+          break;
+        case '\'':
+          escape = '&apos;';
+          break;
+        case '<':
+          escape = '&lt;';
+          break;
+        case '>':
+          escape = '&gt;';
+          break;
+        default:
+          continue;
+      }
+      if (lastIndex !== i) result += html.substring(lastIndex, i);
+      lastIndex = i + 1;
+      result += escape;
+    }
+    if (lastIndex !== i) return result + html.substring(lastIndex, i);
+    return result;
+  },
+
+  strcmp(a, b) {
+    if (a < b) return -1;
+    if (a > b) return 1;
+    return 0;
+  },
+
+  isUndefined(val) {
+    return toString.call(val) === '[object Undefined]';
+  },
+
+  isObject(val) {
+    return toString.call(val) === '[object Object]';
+  },
+
+  deepMerge() {
+    const target = arguments[0] || {};
+    const {length} = arguments;
+    // eslint-disable-next-line one-var
+    let src, clone, copyIsArray;
+
+    function assignValue(val, key) {
+      src = target[key];
+      copyIsArray = Array.isArray(val);
+      if (_.isObject(val) || copyIsArray) {
+        if (copyIsArray) {
+          copyIsArray = false;
+          clone = src && Array.isArray(src) ? src : [];
+        } else {
+          clone = src && _.isObject(src) ? src : {};
+        }
+        target[key] = _.deepMerge(clone, val);
+      } else if (!_.isUndefined(val)) {
+        target[key] = val;
+      }
+    }
+
+    for (let i = 0; i < length; i++) {
+      _.each(arguments[i], assignValue);
+    }
+    return target;
+  },
+};
+
+module.exports = _;

doc/test-data/purchase_transaction/node_modules/exceljs/lib/utils/utils.js

@@ -0,0 +1,172 @@
+const fs = require('fs');
+
+// useful stuff
+const inherits = function(cls, superCtor, statics, prototype) {
+  // eslint-disable-next-line no-underscore-dangle
+  cls.super_ = superCtor;
+
+  if (!prototype) {
+    prototype = statics;
+    statics = null;
+  }
+
+  if (statics) {
+    Object.keys(statics).forEach(i => {
+      Object.defineProperty(cls, i, Object.getOwnPropertyDescriptor(statics, i));
+    });
+  }
+
+  const properties = {
+    constructor: {
+      value: cls,
+      enumerable: false,
+      writable: false,
+      configurable: true,
+    },
+  };
+  if (prototype) {
+    Object.keys(prototype).forEach(i => {
+      properties[i] = Object.getOwnPropertyDescriptor(prototype, i);
+    });
+  }
+
+  cls.prototype = Object.create(superCtor.prototype, properties);
+};
+
+// eslint-disable-next-line no-control-regex
+const xmlDecodeRegex = /[<>&'"\x7F\x00-\x08\x0B-\x0C\x0E-\x1F]/;
+const utils = {
+  nop() {},
+  promiseImmediate(value) {
+    return new Promise(resolve => {
+      if (global.setImmediate) {
+        setImmediate(() => {
+          resolve(value);
+        });
+      } else {
+        // poorman's setImmediate - must wait at least 1ms
+        setTimeout(() => {
+          resolve(value);
+        }, 1);
+      }
+    });
+  },
+  inherits,
+  dateToExcel(d, date1904) {
+    return 25569 + ( d.getTime() / (24 * 3600 * 1000) ) - (date1904 ? 1462 : 0);
+  },
+  excelToDate(v, date1904) {
+    const millisecondSinceEpoch = Math.round((v - 25569 + (date1904 ? 1462 : 0)) * 24 * 3600 * 1000);
+    return new Date(millisecondSinceEpoch);
+  },
+  parsePath(filepath) {
+    const last = filepath.lastIndexOf('/');
+    return {
+      path: filepath.substring(0, last),
+      name: filepath.substring(last + 1),
+    };
+  },
+  getRelsPath(filepath) {
+    const path = utils.parsePath(filepath);
+    return `${path.path}/_rels/${path.name}.rels`;
+  },
+  xmlEncode(text) {
+    const regexResult = xmlDecodeRegex.exec(text);
+    if (!regexResult) return text;
+
+    let result = '';
+    let escape = '';
+    let lastIndex = 0;
+    let i = regexResult.index;
+    for (; i < text.length; i++) {
+      const charCode = text.charCodeAt(i);
+      switch (charCode) {
+        case 34: // "
+          escape = '&quot;';
+          break;
+        case 38: // &
+          escape = '&amp;';
+          break;
+        case 39: // '
+          escape = '&apos;';
+          break;
+        case 60: // <
+          escape = '&lt;';
+          break;
+        case 62: // >
+          escape = '&gt;';
+          break;
+        case 127:
+          escape = '';
+          break;
+        default: {
+          if (charCode <= 31 && (charCode <= 8 || (charCode >= 11 && charCode !== 13))) {
+            escape = '';
+            break;
+          }
+          continue;
+        }
+      }
+      if (lastIndex !== i) result += text.substring(lastIndex, i);
+      lastIndex = i + 1;
+      if (escape) result += escape;
+    }
+    if (lastIndex !== i) return result + text.substring(lastIndex, i);
+    return result;
+  },
+  xmlDecode(text) {
+    return text.replace(/&([a-z]*);/g, c => {
+      switch (c) {
+        case '&lt;':
+          return '<';
+        case '&gt;':
+          return '>';
+        case '&amp;':
+          return '&';
+        case '&apos;':
+          return '\'';
+        case '&quot;':
+          return '"';
+        default:
+          return c;
+      }
+    });
+  },
+  validInt(value) {
+    const i = parseInt(value, 10);
+    return !Number.isNaN(i) ? i : 0;
+  },
+
+  isDateFmt(fmt) {
+    if (!fmt) {
+      return false;
+    }
+
+    // must remove all chars inside quotes and []
+    fmt = fmt.replace(/\[[^\]]*]/g, '');
+    fmt = fmt.replace(/"[^"]*"/g, '');
+    // then check for date formatting chars
+    const result = fmt.match(/[ymdhMsb]+/) !== null;
+    return result;
+  },
+
+  fs: {
+    exists(path) {
+      return new Promise(resolve => {
+        fs.access(path, fs.constants.F_OK, err => {
+          resolve(!err);
+        });
+      });
+    },
+  },
+
+  toIsoDateString(dt) {
+    return dt.toIsoString().subsstr(0, 10);
+  },
+
+  parseBoolean(value) {
+    return value === true || value === 'true' || value === 1 || value === '1';
+  },
+};
+
+module.exports = utils;

doc/test-data/purchase_transaction/node_modules/exceljs/lib/utils/xml-stream.js

@@ -0,0 +1,169 @@
+const _ = require('./under-dash');
+
+const utils = require('./utils');
+
+// constants
+const OPEN_ANGLE = '<';
+const CLOSE_ANGLE = '>';
+const OPEN_ANGLE_SLASH = '</';
+const CLOSE_SLASH_ANGLE = '/>';
+
+function pushAttribute(xml, name, value) {
+  xml.push(` ${name}="${utils.xmlEncode(value.toString())}"`);
+}
+function pushAttributes(xml, attributes) {
+  if (attributes) {
+    const tmp = [];
+    _.each(attributes, (value, name) => {
+      if (value !== undefined) {
+        pushAttribute(tmp, name, value);
+      }
+    });
+    xml.push(tmp.join(""));
+  }
+}
+
+class XmlStream {
+  constructor() {
+    this._xml = [];
+    this._stack = [];
+    this._rollbacks = [];
+  }
+
+  get tos() {
+    return this._stack.length ? this._stack[this._stack.length - 1] : undefined;
+  }
+
+  get cursor() {
+    // handy way to track whether anything has been added
+    return this._xml.length;
+  }
+
+  openXml(docAttributes) {
+    const xml = this._xml;
+    // <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+    xml.push('<?xml');
+    pushAttributes(xml, docAttributes);
+    xml.push('?>\n');
+  }
+
+  openNode(name, attributes) {
+    const parent = this.tos;
+    const xml = this._xml;
+    if (parent && this.open) {
+      xml.push(CLOSE_ANGLE);
+    }
+
+    this._stack.push(name);
+
+    // start streaming node
+    xml.push(OPEN_ANGLE);
+    xml.push(name);
+    pushAttributes(xml, attributes);
+    this.leaf = true;
+    this.open = true;
+  }
+
+  addAttribute(name, value) {
+    if (!this.open) {
+      throw new Error('Cannot write attributes to node if it is not open');
+    }
+    if (value !== undefined) {
+      pushAttribute(this._xml, name, value);
+    }
+  }
+
+  addAttributes(attrs) {
+    if (!this.open) {
+      throw new Error('Cannot write attributes to node if it is not open');
+    }
+    pushAttributes(this._xml, attrs);
+  }
+
+  writeText(text) {
+    const xml = this._xml;
+    if (this.open) {
+      xml.push(CLOSE_ANGLE);
+      this.open = false;
+    }
+    this.leaf = false;
+    xml.push(utils.xmlEncode(text.toString()));
+  }
+
+  writeXml(xml) {
+    if (this.open) {
+      this._xml.push(CLOSE_ANGLE);
+      this.open = false;
+    }
+    this.leaf = false;
+    this._xml.push(xml);
+  }
+
+  closeNode() {
+    const node = this._stack.pop();
+    const xml = this._xml;
+    if (this.leaf) {
+      xml.push(CLOSE_SLASH_ANGLE);
+    } else {
+      xml.push(OPEN_ANGLE_SLASH);
+      xml.push(node);
+      xml.push(CLOSE_ANGLE);
+    }
+    this.open = false;
+    this.leaf = false;
+  }
+
+  leafNode(name, attributes, text) {
+    this.openNode(name, attributes);
+    if (text !== undefined) {
+      // zeros need to be written
+      this.writeText(text);
+    }
+    this.closeNode();
+  }
+
+  closeAll() {
+    while (this._stack.length) {
+      this.closeNode();
+    }
+  }
+
+  addRollback() {
+    this._rollbacks.push({
+      xml: this._xml.length,
+      stack: this._stack.length,
+      leaf: this.leaf,
+      open: this.open,
+    });
+    return this.cursor;
+  }
+
+  commit() {
+    this._rollbacks.pop();
+  }
+
+  rollback() {
+    const r = this._rollbacks.pop();
+    if (this._xml.length > r.xml) {
+      this._xml.splice(r.xml, this._xml.length - r.xml);
+    }
+    if (this._stack.length > r.stack) {
+      this._stack.splice(r.stack, this._stack.length - r.stack);
+    }
+    this.leaf = r.leaf;
+    this.open = r.open;
+  }
+
+  get xml() {
+    this.closeAll();
+    return this._xml.join('');
+  }
+}
+
+XmlStream.StdDocAttributes = {
+  version: '1.0',
+  encoding: 'UTF-8',
+  standalone: 'yes',
+};
+
+module.exports = XmlStream;

doc/test-data/purchase_transaction/node_modules/exceljs/lib/utils/zip-stream.js

@@ -0,0 +1,87 @@
+const events = require('events');
+const JSZip = require('jszip');
+
+const StreamBuf = require('./stream-buf');
+const {stringToBuffer} = require('./browser-buffer-encode');
+
+// =============================================================================
+// The ZipWriter class
+// Packs streamed data into an output zip stream
+class ZipWriter extends events.EventEmitter {
+  constructor(options) {
+    super();
+    this.options = Object.assign(
+      {
+        type: 'nodebuffer',
+        compression: 'DEFLATE',
+      },
+      options
+    );
+
+    this.zip = new JSZip();
+    this.stream = new StreamBuf();
+  }
+
+  append(data, options) {
+    if (options.hasOwnProperty('base64') && options.base64) {
+      this.zip.file(options.name, data, {base64: true});
+    } else {
+      // https://www.npmjs.com/package/process
+      if (process.browser && typeof data === 'string') {
+        // use TextEncoder in browser
+        data = stringToBuffer(data);
+      }
+      this.zip.file(options.name, data);
+    }
+  }
+
+  async finalize() {
+    const content = await this.zip.generateAsync(this.options);
+    this.stream.end(content);
+    this.emit('finish');
+  }
+
+  // ==========================================================================
+  // Stream.Readable interface
+  read(size) {
+    return this.stream.read(size);
+  }
+
+  setEncoding(encoding) {
+    return this.stream.setEncoding(encoding);
+  }
+
+  pause() {
+    return this.stream.pause();
+  }
+
+  resume() {
+    return this.stream.resume();
+  }
+
+  isPaused() {
+    return this.stream.isPaused();
+  }
+
+  pipe(destination, options) {
+    return this.stream.pipe(destination, options);
+  }
+
+  unpipe(destination) {
+    return this.stream.unpipe(destination);
+  }
+
+  unshift(chunk) {
+    return this.stream.unshift(chunk);
+  }
+
+  wrap(stream) {
+    return this.stream.wrap(stream);
+  }
+}
+
+// =============================================================================
+
+module.exports = {
+  ZipWriter,
+};