Decaswap SDK

Install dependencies

```sh
yarn install

Run tests

yarn test

You should see output like the following:

yarn run v1.22.4
$ tsdx test
 PASS  test/constants.test.ts
 PASS  test/pair.test.ts
 PASS  test/fraction.test.ts
 PASS  test/miscellaneous.test.ts
 PASS  test/entities.test.ts
 PASS  test/trade.test.ts

Test Suites: 1 skipped, 6 passed, 6 of 7 total
Tests:       3 skipped, 82 passed, 85 total
Snapshots:   0 total
Time:        5.091s
Ran all test suites.
✨  Done in 6.61s.