Nowdays everything is easly maintain if we are dealing with objects .As I have face many problems while in uploading excel file ,taking data from excel and play with each Cell of excel file .This Converter is just a interface which helps to get objects from excel Or excel from objects.

link https://github.com/hardy12994/xlconverter

Here are the two Converters and Some Getters (define below) present in it :

• Excel to Objects
• Objects to Excel

Excel to Objects

let xlconverter = require('xlconverter');

 let path="abv/cac/ac/ac.xlsx";
 let sheet="sheet1";


 // xlToObjects, will provide objects of all the sheets present in xl sheet;

  xlconverter.xlToObjects(path, function (err, data) {
      console.log(err);
      console.log(data);
  });


 /**
 * data-
 *
 * [{},{},{}]
 * // object as rows
 */


 // xlToObjectsOfSheet, will provide objects of perticular sheet present in xl sheet;

  xlconverter.xlToObjectsOfSheet(path, sheet, function (err, data) {
      console.log(err);
      console.log(data);
  });

   /**
   * data -
   * {
   *   sheet1: [{},{},{}],
   *   sheet2: [{},{},{}]
   * }
   * // object as rows
   */
  

Objects to Excel

     let headers=["name","age"];
     let rows=[{ name:"hardy",age:21 },{ name:"hardy",age:21 }];
     let path="abc/cac/";
     let fileName="myNewSheet"; //.xlsx is by default
     let sheetName="sheet1";

     xlconverter.objectsToXl(headers, rows, path, fileName, sheetName, function (err, data) {
         console.log(err);
         console.log(data); 
     });

      /**
      * if error -`sheetName` sheet not created
      * data -
      * `sheetName` sheet successfully created.
      */

Getters

We can use Excel Sheet as a very small Database as we can do Extractions from that by putting some queries, The query can be made in form of Objects, Arrays Thing can be achive like:

• Any Perticular Row.
• Any Perticular Column.
• Get Number of Rows.
• Get Number of Columns.
• Get Data as Objects of Perticular Columns.

Get Row

• Accept Query as Object Eg- {name:"Jhon",age:"21"}.
• and type of query will be done.
• Return Single Row which matches both Conditions First.

     let rowQuery= {name:"Jhon",age:"21"};
     let filePath="abc/cac/";
     let sheetName="sheet1";
     
     xlconverter.getters.row(filePath, rowQuery, sheetName, function (err, data) {
         console.log(err);
         console.log(data); 
     });

    /**
    * data-
    *
    * {name:"Jhon", age:"21", f_name:"D_Jhon"}
    * // object as rows
    */

Get Rows

• Accept Parameters as Object Eg- {name:"Jhon",age:"21"}.
• and type of query will be done.
• Return Multiple Rows which matches both Conditions.

     let rowQuery= {name:"Jhon",age:"21"};
     let filePath="abc/cac/";
     let sheetName="sheet1";
     
     xlconverter.getters.rows(filePath, rowQuery, sheetName, function (err, data) {
         console.log(err);
         console.log(data); 
     });

    /**
    * data-
    *
    * [{name:"Jhon", age:"21", f_name:"D_Jhon"},
    * {name:"Jhon", age:"21", f_name:"D_Jhonee"}]
    * // object as rows
    */

Get Column

• Accept Parameters as String Eg- "name".
• Return Array of Strings which is Present in that Column.

     let colQuery= "name";
     let filePath="abc/cac/";
     let sheetName="sheet1";
     
     xlconverter.getters.coloumn(filePath, colQuery, sheetName, function (err, data) {
         console.log(err);
         console.log(data); 
     });

    /**
    * data-
    *
    * ["Jhon","Jhon2","Jhon3"]
    * // as coloumn cells
    */

Get Columns

• Accept Parameters as String in Array Eg- ["name","age"].
• Return Object with Keys name and age and both of them have Array of Strings which is Present in respective Column.

     let colQuery= ["name","age"];
     let filePath="abc/cac/";
     let sheetName="sheet1";
     
     xlconverter.getters.coloumns(filePath, colQuery, sheetName, function (err, data) {
         console.log(err);
         console.log(data); 
     });

    /**
    * data-
    *
    * {
    *  name:["Jhon","Jhon2","Jhon3"],
    *  age:[21,33,13]
    * }
    * // as coloumn cells
    */

Get Rows from Selective Columns

• Accept Parameters as String in Array Eg- ["name","age"].
• Return all Rows with Selected Columns name and age as Objects in Array
• Getting Selective Coloumns of Rows.

     let colQuery= ["name","age"];
     let filePath="abc/cac/";
     let sheetName="sheet1";
     
     xlconverter.getters.selectiveColoumnsOfRows(filePath, colQuery, sheetName, function (err, data) {
         console.log(err);
         console.log(data); 
     });

    /**
    * data-
    *
    * [
    *   {name: "hardy", age: 12},
    *   {name: "pery", age: 41},
    *   {name: "bob", age: 42}
    *  ]
    * // 
    */

N O T E :

• callback function is required in all methods.
• getters are using xlToObjectsOfSheet function that's why sheet name is required.

Contributions are most wellcome