Switch to tsc for transpilation

.babelrc

@@ -1,12 +0,0 @@
-{
-  "presets": [
-    [ "@babel/preset-env", { "modules": "auto" } ]
-  ],
-  "plugins": [
-    "@babel/transform-runtime",
-     ["@babel/plugin-proposal-class-properties", { "loose": true }]
-  ],
-  "ignore": [
-    "**/*.test.js"
-  ]
-}

.eslintrc

@@ -1,11 +1,10 @@
 {
   "parser": "babel-eslint",
   "extends": [
+    "eslint:recommended",
     "standard",
-    "standard-react",
     "plugin:prettier/recommended",
-    "prettier/standard",
-    "prettier/react"
+    "prettier/standard"
   ],
   "env": {
     "node": true,
@@ -18,17 +17,8 @@
       "jsx": true
     }
   },
-  "settings": {
-    "react": {
-      "version": "16"
-    }
-  },
   "rules": {
     "space-before-function-paren": 0,
-    "react/prop-types": 0,
-    "react/jsx-handler-names": 0,
-    "react/jsx-fragments": 0,
-    "react/no-unused-prop-types": 0,
     "import/export": 0
   }
 }

jest.config.js

@@ -0,0 +1,4 @@
+module.exports = {
+  preset: 'ts-jest/presets/js-with-ts',
+  testEnvironment: 'node',
+};

package.json

@@ -10,54 +10,44 @@
     "node": ">=10"
   },
   "scripts": {
-    "build": "babel src --out-dir lib",
-    "start": "babel src --out-dir lib --watch",
+    "build": "tsc",
+    "start": "tsc --watch",
     "clean": "rm -rf lib",
     "prepare": "run-s clean build",
     "test": "run-s test:unit test:lint test:build",
     "test:build": "run-s build",
     "test:lint": "eslint src",
-    "test:unit": "cross-env CI=1 react-scripts test",
-    "test:watch": "react-scripts test"
+    "test:unit": "jest",
+    "test:watch": "jest --watch"
   },
   "devDependencies": {
-    "@babel/cli": "^7.10.5",
-    "@babel/core": "^7.11.1",
-    "@babel/plugin-proposal-class-properties": "^7.10.4",
-    "@babel/plugin-transform-runtime": "^7.11.0",
-    "@babel/preset-env": "^7.11.0",
+    "@tsconfig/node12": "^1.0.7",
+    "@types/jest": "^26.0.9",
     "babel-eslint": "^10.0.3",
     "cross-env": "^7.0.2",
-    "eslint": "^6.8.0",
+    "eslint": "^7.6.0",
     "eslint-config-prettier": "^6.7.0",
     "eslint-config-standard": "^14.1.0",
-    "eslint-config-standard-react": "^9.2.0",
     "eslint-plugin-import": "^2.18.2",
     "eslint-plugin-node": "^11.0.0",
     "eslint-plugin-prettier": "^3.1.1",
     "eslint-plugin-promise": "^4.2.1",
-    "eslint-plugin-react": "^7.17.0",
     "eslint-plugin-standard": "^4.0.1",
+    "jest": "^26.4.0",
     "npm-run-all": "^4.1.5",
     "prettier": "^2.0.4",
-    "react": "^16.13.1",
-    "react-dom": "^16.13.1",
-    "react-scripts": "^3.4.1"
+    "ts-jest": "^26.2.0",
+    "typescript": "^3.9.7"
   },
   "files": [
     "lib"
   ],
-  "jest": {
-    "transformIgnorePatterns": [
-      "^.+\\.cjs$"
-    ]
-  },
   "prettier": {
     "singleQuote": true,
     "trailingComma": "all"
   },
   "dependencies": {
-    "@solana/web3.js": "^0.68",
+    "@solana/web3.js": "^0.70.3",
     "bn.js": "^5.1.2",
     "buffer-layout": "^1.2.0"
   },

src/instructions.js

@@ -1,4 +1,4 @@
-import { blob, struct, u16, u32, u8, union } from 'buffer-layout';
+import { struct, u16, u32, u8, union } from 'buffer-layout';
 import {
   orderTypeLayout,
   publicKeyLayout,
@@ -6,7 +6,6 @@ import {
   u128,
   u64,
   VersionedLayout,
-  zeros,
 } from './layout';
 import { PublicKey, TransactionInstruction } from '@solana/web3.js';
 import { TOKEN_PROGRAM_ID } from './token-instructions';

src/layout.js

@@ -1,3 +1,5 @@
+// @ts-nocheck
+
 import { bits, Blob, Layout, u32, UInt } from 'buffer-layout';
 import { PublicKey } from '@solana/web3.js';
 import BN from 'bn.js';
@@ -138,6 +140,19 @@ export function orderTypeLayout(property) {
   return new EnumLayout({ limit: 0, ioc: 1, postOnly: 2 }, 4, property);
 }
 
+const ACCOUNT_FLAGS_LAYOUT = new WideBits();
+ACCOUNT_FLAGS_LAYOUT.addBoolean('initialized');
+ACCOUNT_FLAGS_LAYOUT.addBoolean('market');
+ACCOUNT_FLAGS_LAYOUT.addBoolean('openOrders');
+ACCOUNT_FLAGS_LAYOUT.addBoolean('requestQueue');
+ACCOUNT_FLAGS_LAYOUT.addBoolean('eventQueue');
+ACCOUNT_FLAGS_LAYOUT.addBoolean('bids');
+ACCOUNT_FLAGS_LAYOUT.addBoolean('asks');
+
+export function accountFlagsLayout(property = 'accountFlags') {
+  return ACCOUNT_FLAGS_LAYOUT.replicate(property);
+}
+
 export function setLayoutDecoder(layout, decoder) {
   const originalDecode = layout.decode;
   layout.decode = function decode(b, offset = 0) {

src/market.js

@@ -1,5 +1,5 @@
 import { blob, seq, struct, u8 } from 'buffer-layout';
-import { publicKeyLayout, u128, u64, WideBits } from './layout';
+import { accountFlagsLayout, publicKeyLayout, u128, u64 } from './layout';
 import { SLAB_LAYOUT } from './slab';
 import { DEX_PROGRAM_ID, DexInstructions } from './instructions';
 import BN from 'bn.js';
@@ -10,21 +10,8 @@ import {
   Transaction,
 } from '@solana/web3.js';
 
-const ACCOUNT_FLAGS_LAYOUT = new WideBits();
-ACCOUNT_FLAGS_LAYOUT.addBoolean('initialized');
-ACCOUNT_FLAGS_LAYOUT.addBoolean('market');
-ACCOUNT_FLAGS_LAYOUT.addBoolean('openOrders');
-ACCOUNT_FLAGS_LAYOUT.addBoolean('requestQueue');
-ACCOUNT_FLAGS_LAYOUT.addBoolean('eventQueue');
-ACCOUNT_FLAGS_LAYOUT.addBoolean('bids');
-ACCOUNT_FLAGS_LAYOUT.addBoolean('asks');
-
-export function accountFlags(property = 'accountFlags') {
-  return ACCOUNT_FLAGS_LAYOUT.replicate(property);
-}
-
 export const MARKET_STATE_LAYOUT = struct([
-  accountFlags('accountFlags'),
+  accountFlagsLayout('accountFlags'),
 
   publicKeyLayout('ownAddress'),
 
@@ -322,7 +309,7 @@ export class Market {
 }
 
 export const OPEN_ORDERS_LAYOUT = struct([
-  accountFlags('accountFlags'),
+  accountFlagsLayout('accountFlags'),
 
   publicKeyLayout('market'),
   publicKeyLayout('owner'),
@@ -420,7 +407,7 @@ export class OpenOrders {
 }
 
 export const ORDERBOOK_LAYOUT = struct([
-  accountFlags('accountFlags'),
+  accountFlagsLayout('accountFlags'),
   SLAB_LAYOUT.replicate('slab'),
 ]);
 
@@ -445,7 +432,7 @@ export class Orderbook {
     for (const { key, quantity } of this.slab.items(descending)) {
       const price = getPriceFromKey(key);
       if (levels.length > 0 && levels[levels.length - 1][0].equals(price)) {
-        levels[levels.length - 1].iadd(quantity);
+        levels[levels.length - 1][1].iadd(quantity);
       } else if (levels.length === depth) {
         break;
       } else {

src/market.test.js

@@ -1,7 +1,7 @@
-import { accountFlags } from './market';
+import { accountFlagsLayout } from './layout';
 
 describe('accountFlags', () => {
-  const layout = accountFlags();
+  const layout = accountFlagsLayout();
   it('parses', () => {
     const b = Buffer.from('0000000000000000', 'hex');
     expect(layout.getSpan(b)).toBe(8);

src/token-instructions.js

@@ -53,10 +53,10 @@ function encodeTokenInstructionData(instruction) {
 
 export function initializeMint({
   mint,
-  amount,
+  amount = 0,
   decimals,
-  initialAccount,
-  mintOwner,
+  initialAccount = null,
+  mintOwner = null,
 }) {
   const keys = [{ pubkey: mint, isSigner: false, isWritable: true }];
   if (amount) {

tsconfig.json

@@ -0,0 +1,14 @@
+{
+  "extends": "@tsconfig/node12/tsconfig.json",
+  "compilerOptions": {
+    "outDir": "./lib",
+    "allowJs": true,
+    "checkJs": true,
+    "declaration": true,
+    "declarationMap": true,
+    "noImplicitAny": false,
+    "sourceMap": true
+  },
+  "include": ["./src/**/*"],
+  "exclude": ["./src/**/*.test.js", "node_modules", "**/node_modules"]
+}