Initial change from Babel/JS to TypeScript (#70)

* will compile as typescript

* migrated test suite to use JestJS

* Migrated to Jest testing framework and typescript source files

* updated deps

* updated prepublish

* resolved 1 failing test

* changed decimal .0 on four tests, it appears that these were the only four tests expecting integer values to have '.0'

* added linter

* added package-lock

* removed tslint in favor of eslint

* changed yarn to npm

* updated version 2.6->3.0

* removing package lock

* updated node version in nvmrc and jest version in package

* removed nvmrc

* removed some unused functions

* replaced data driven with file from master

* commitint yarn.lock

* removing babel as a dependency in favor of typescript compiling to es5

* removing babel deps

* resolved testing issues by migrating helper function

* added partial linting functionality for test suite

* updated imports for decodeLedgerData

* updated test

* updated yarn.lock

* removed a console.log

* added eslint-jest-plugin to package

* reverting to old linting, will add linting in next PR

* removed comments in shamap

* re-adding .nvmrc

* npm -> yarn

* added . to .eslintrc

* added .eslintrc

* removing linting for this PR

* Changed linting to print a message so that linting doesnt fail in CI

* changing back

* added newline so diff wont show

* removed eslint deps, since linting will be dealt with in a later PR

* changed function calls to describe(...)

packages/ripple-binary-codec/test/binary-json.test.js

@@ -0,0 +1,44 @@
+const fixtures = require('./fixtures/codec-fixtures.json')
+const { decode, encode, decodeLedgerData } = require('../dist')
+
+function json (object) {
+  return JSON.stringify(object)
+}
+
+function truncateForDisplay (longStr) {
+  return longStr.slice(0, 10) + '...' + longStr.slice(-10)
+}
+
+describe('ripple-binary-codec', function () {
+  function makeSuite (name, entries) {
+    describe(name, function () {
+      entries.forEach((t, testN) => {
+        // eslint-disable-next-line max-len
+        test(`${name}[${testN}] can encode ${truncateForDisplay(json(t.json))} to ${truncateForDisplay(t.binary)}`,
+          () => {
+            expect(t.binary).toEqual(encode(t.json))
+          })
+        // eslint-disable-next-line max-len
+        test(`${name}[${testN}] can decode ${truncateForDisplay(t.binary)} to ${truncateForDisplay(json(t.json))}`,
+          () => {
+            const decoded = decode(t.binary)
+            expect(t.json).toEqual(decoded)
+          })
+      })
+    })
+  }
+  makeSuite('transactions', fixtures.transactions)
+  makeSuite('accountState', fixtures.accountState)
+
+  describe('ledgerData', function () {
+    if (fixtures.ledgerData) {
+      fixtures.ledgerData.forEach((t, testN) => {
+        test(`ledgerData[${testN}] can decode ${t.binary} to ${json(t.json)}`,
+          () => {
+            const decoded = decodeLedgerData(t.binary)
+            expect(t.json).toEqual(decoded)
+          })
+      })
+    }
+  })
+})