mt940-js

An isomorphic Javascript library for working with MT940 format

Changelog

Reading

API

read(buffer, options)

• buffer {Buffer|ArrayBuffer} - income buffer that contains data of mt940 file.
• options {ReadOptions}
• returns Promise with list of Statement.

ReadOptions

• getTransactionId(transaction, index) - a custom generator for transaction id. By default it's:

/**
* @description version 0.5.x
* @param {Transaction} transaction
* @param {number} index
* @returns {string}
*/
function getTransactionId (transaction, index) {
    return md5(`${ date }${ transaction.description }${ amount }${ transaction.currency }`);
}


/**
* @description version 0.6.x+
* @param {Transaction} transaction
* @param {number} index
* @returns {string}
*/
function getTransactionId (transaction, index) {
    return md5(JSON.strinfigy(transaction));
}

Node.js environment

import * as mt940 from 'mt940-js';
import fs from 'fs';

fs.readFile('/path/to/your/mt940/file', (error, buffer) => {
    mt940.read(buffer).then((statements) => {
        //
    });
});

Browser environment

Reading a local file

<input type="file" onchange="onFileSelected(this.files[0])"/>

import * as mt940 from 'mt940-js';

function onFileSelected (file) {
    const reader = new FileReader();
    
    reader.onload = () => {
        mt940.read(reader.result).then((statements) => {
            // List of the Statements
        });
    };
    reader.readAsArrayBuffer(file);
}

Reading a remote file

import * as mt940 from 'mt940-js';

fetch('/url/to/mt940/file')
    .then((response) => response.arrayBuffer())
    .then((buffer) => {
        mt940.read(buffer).then((statements) => {
            // List of the Statements
        });
    });

Writing

Coming soon

Supported MT940 tags

• :20:
• :21:
• :25:
• :28(C):
• :60(M|F):
• :61:
• :62(M|F):
• :64:
• :65:
• :86:

Related links

JS

• Buffer
• ArrayBuffer

mt940 specification

• Societe Generale spec.
• Sepa spec.
• Deutsche Bank spec.