Functional Approach

This package provides alternatives to many functions that are not throwing any errors, but returning them. We recommend using such package as fp-ts to process such kind of results.

Here are some examples:

import * as E from 'fp-ts/Either';
import { pipe } from 'fp-ts/function';
import { validateFp, signFp } from '@tma.js/init-data-node';

pipe(
  validateFp('...', '...'),
  E.match(
    error => {
      // error will be typed here, you will know exactly what is wrong.
    },
    () => {
      // Everything is ok.
    },
  ),
);

pipe(
  signFp({ ... }, '...', new Date()),
  E.match(
    error => {
      // ...
    },
    signedData => {
      // ...
    },
  ),
);