fix linting and devdeps issues by using eslint for ripple-address-codec and removing the misc plugins used by ripple-keypairs

run 'npx lerna link convert' to hoist common devDependencies to top

package.json

@@ -1,4 +1,5 @@
 {
+  "name": "xrpl.js",
   "private": true,
   "scripts": {
     "test": "lerna run test",
@@ -7,6 +8,12 @@
     "lint": "lerna run lint",
     "build": "lerna run build"
   },
+  "dependencies": {
+    "ripple-address-codec": "file:packages/ripple-address-codec",
+    "ripple-binary-codec": "file:packages/ripple-binary-codec",
+    "ripple-keypairs": "file:packages/ripple-keypairs",
+    "xrpl": "file:packages/xrpl"
+  },
   "devDependencies": {
     "@types/chai": "^4.2.21",
     "@types/jest": "^26.0.7",
@@ -17,7 +24,7 @@
     "@types/ws": "^8.2.0",
     "@typescript-eslint/eslint-plugin": "^4.30.0",
     "@typescript-eslint/parser": "^4.0.0",
-    "@xrplf/eslint-config": "^1.5.0",
+    "@xrplf/eslint-config": "^1.6.0",
     "@xrplf/prettier-config": "^1.5.0",
     "assert": "^2.0.0",
     "buffer": "^6.0.2",
@@ -25,14 +32,10 @@
     "crypto-browserify": "^3.12.0",
     "ejs": "^3.0.1",
     "eslint": "^7.5.0",
-    "eslint-config-airbnb-base": "^14.0.0",
-    "eslint-config-airbnb-typescript": "^7.0.0",
-    "eslint-config-prettier": "^6.9.0",
     "eslint-plugin-array-func": "^3.1.7",
     "eslint-plugin-consistent-default-export-name": "^0.0.13",
     "eslint-plugin-eslint-comments": "^3.2.0",
     "eslint-plugin-import": "^2.24.1",
-    "eslint-plugin-jest": "^23.20.0",
     "eslint-plugin-jsdoc": "^36.0.0",
     "eslint-plugin-mocha": "^9.0.0",
     "eslint-plugin-node": "^11.1.0",
@@ -55,8 +58,6 @@
     "ts-jest": "^26.4.4",
     "ts-loader": "^9.2.5",
     "ts-node": "^10.2.1",
-    "tslint": "^5.19.0",
-    "tslint-eslint-rules": "^5.4.0",
     "typedoc": "^0.22.5",
     "typescript": "^4.4.2",
     "url": "^0.11.0",
@@ -70,12 +71,5 @@
   "engines": {
     "node": ">=10.0.0",
     "npm": ">=7.0.0 < 8.0.0"
-  },
-  "name": "xrpl.js",
-  "dependencies": {
-    "ripple-address-codec": "file:packages/ripple-address-codec",
-    "ripple-binary-codec": "file:packages/ripple-binary-codec",
-    "ripple-keypairs": "file:packages/ripple-keypairs",
-    "xrpl": "file:packages/xrpl"
   }
 }

packages/ripple-keypairs/src/secp256k1.ts

@@ -1,4 +1,5 @@
 import * as elliptic from 'elliptic'
+
 import Sha512 from './Sha512'
 
 const secp256k1 = elliptic.ec('secp256k1')
@@ -20,25 +21,25 @@ function deriveScalar(bytes, discrim?: number) {
       return key
     }
   }
-  /* This error is practically impossible to reach.
-   * The order of the curve describes the (finite) amount of points on the curve
-   * https://github.com/indutny/elliptic/blob/master/lib/elliptic/curves.js#L182
-   * How often will an (essentially) random number generated by Sha512 be larger than that?
-   * There's 2^32 chances (the for loop) to get a number smaller than the order,
-   * and it's rare that you'll even get past the first loop iteration.
-   * Note that in TypeScript we actually need the throw, otherwise the function signature would be BN | undefined
-   */
+  // This error is practically impossible to reach.
+  // The order of the curve describes the (finite) amount of points on the curve
+  // https://github.com/indutny/elliptic/blob/master/lib/elliptic/curves.js#L182
+  // How often will an (essentially) random number generated by Sha512 be larger than that?
+  // There's 2^32 chances (the for loop) to get a number smaller than the order,
+  // and it's rare that you'll even get past the first loop iteration.
+  // Note that in TypeScript we actually need the throw, otherwise the function signature would be BN | undefined
+  //
   /* istanbul ignore next */
   throw new Error('impossible unicorn ;)')
 }
 
 /**
- * @param {Array} seed - bytes
- * @param {Object} [opts] - object
- * @param {Number} [opts.accountIndex=0] - the account number to generate
- * @param {Boolean} [opts.validator=false] - generate root key-pair,
+ * @param seed - Bytes.
+ * @param [opts] - Object.
+ * @param [opts.accountIndex=0] - The account number to generate.
+ * @param [opts.validator=false] - Generate root key-pair,
  *                                              as used by validators.
- * @return {bn.js} - 256 bit scalar value
+ * @returns {bn.js} 256 bit scalar value.
  *
  */
 export function derivePrivateKey(