Method recursiveDuckColumns

handsontable/src/dataMap/dataMap.ts:236–256

* Generates columns' translation cache. * * @param {object} schema An object to generate schema from. * @param {number} lastCol The column index. * @param {number} parent The property cache for recursive calls. * @returns {number}

(schema: unknown, lastCol?: number, parent?: string)

   * @returns {number}
   */
  recursiveDuckColumns(schema: unknown, lastCol?: number, parent?: string) {
    let lastColumn: number = lastCol ?? 0;
    const propertyParent: string = parent ?? '';
    let prop;

    if (typeof schema === 'object' && schema !== null && !Array.isArray(schema)) {
      objectEach(schema, (value: unknown, key: string) => {
        if (value === null) {
          prop = propertyParent + key;
          this.colToPropCache.push(prop);
          this.propToColCache!.set(prop, lastColumn);

          lastColumn += 1;
        } else if (typeof value === 'object' && value !== null) {
          lastColumn = this.recursiveDuckColumns(value, lastColumn, `${key}.`);
        }
      });
    }

    return lastColumn;
  }

  /**
   * Returns property name that corresponds with the given column index.