@atomictech/xlsx-write-stream/dist/XLSXRowTransform.js

Stream huge amount of data into an XLSX generated file stream with minimum memory footprint.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

var _stream = require("stream");

var _templates = require("./templates");

/**
 * Class representing a XLSX Row transformation from array to Row.
 */
class XLSXRowTransform extends _stream.Transform {
  /**
   * Create new xlsx row transform stream
   * @param {Object} [options]
   * @param {Boolean} [options.header=false] - If set to true writer will output first row with an header style.
   * @param {Boolean} [options.format=true] - If set to false writer will not format cells with number, date, boolean and text.
   * @param {Styles} [options.styles=new Styles()] - If set you can overwrite default standard type styles by other standard ones or even define custom `formatCode`.
   */
  constructor({
    header = false,
    format = true,
    styles = new _templates.Styles()
  }) {
    super({
      objectMode: true
    });
    this.rowCount = 0;
    this.header = header;
    this.format = format;
    this.styles = styles;
    if (this.header) throw new Error('Header special style output not yet implemented.');
  }
  /**
   * Transform array to row string
   */


  _transform(row, encoding, callback) {
    const xlsxRow = (0, _templates.Row)(this.rowCount, row, this.format, this.styles);
    this.rowCount++;
    callback(null, xlsxRow);
  }

}

exports.default = XLSXRowTransform;
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