replace tslint (deprecated) with eslint

.eslintrc.json

@@ -0,0 +1,24 @@
+{
+  "env": {
+    "browser": true,
+    "es6": true,
+    "node": true
+  },
+  "extends": [
+    "eslint:recommended"
+  ],
+  "parser": "@typescript-eslint/parser",
+  "parserOptions": {
+    "ecmaVersion": 2018,
+    "sourceType": "module"
+  },
+  "plugins": [
+    "@typescript-eslint"
+  ],
+  "rules": {
+    "no-useless-constructor": 0,
+    "no-unused-vars": 0,
+    "no-prototype-builtins": 0,
+    "require-atomic-updates": 0
+  }
+}

package.json

@@ -31,9 +31,12 @@
   },
   "devDependencies": {
     "@types/node": "11.13.0",
+    "@typescript-eslint/eslint-plugin": "^2.3.3",
+    "@typescript-eslint/parser": "^2.3.3",
     "assert-diff": "^1.0.1",
     "doctoc": "^0.15.0",
     "ejs": "^2.3.4",
+    "eslint": "^6.5.1",
     "eventemitter2": "^0.4.14",
     "gulp": "^4.0.2",
     "json-loader": "^0.5.2",
@@ -45,9 +48,7 @@
     "source-map-support": "0.5.12",
     "ts-loader": "^3.2.0",
     "ts-node": "8.0.3",
-    "tslint": "^5.8.0",
-    "tslint-eslint-rules": "^4.1.1",
-    "typescript": "3.4.2",
+    "typescript": "^3.6.4",
     "uglifyjs-webpack-plugin": "^1.1.4",
     "webpack": "3.12.0"
   },
@@ -60,7 +61,7 @@
     "watch": "tsc -w",
     "prepublish": "npm run clean && npm run compile && npm run build",
     "test": "TS_NODE_PROJECT=src/tsconfig.json nyc mocha --exit",
-    "lint": "tslint -p ./",
+    "lint": "eslint src/**/*.ts",
     "perf": "./scripts/perf_test.sh",
     "start": "node scripts/http.js"
   },

src/common/utils.ts

@@ -17,7 +17,7 @@ function dropsToXrp(drops: string | BigNumber): string {
   if (typeof drops === 'string') {
     if (!drops.match(/^-?[0-9]*\.?[0-9]*$/)) {
       throw new ValidationError(`dropsToXrp: invalid value '${drops}',` +
-        ` should be a number matching (^-?[0-9]*\.?[0-9]*$).`)
+        ` should be a number matching (^-?[0-9]*.?[0-9]*$).`)
     } else if (drops === '.') {
       throw new ValidationError(`dropsToXrp: invalid value '${drops}',` +
         ` should be a BigNumber or string-encoded number.`)
@@ -51,7 +51,7 @@ function xrpToDrops(xrp: string | BigNumber): string {
   if (typeof xrp === 'string') {
     if (!xrp.match(/^-?[0-9]*\.?[0-9]*$/)) {
       throw new ValidationError(`xrpToDrops: invalid value '${xrp}',` +
-        ` should be a number matching (^-?[0-9]*\.?[0-9]*$).`)
+        ` should be a number matching (^-?[0-9]*.?[0-9]*$).`)
     } else if (xrp === '.') {
       throw new ValidationError(`xrpToDrops: invalid value '${xrp}',` +
         ` should be a BigNumber or string-encoded number.`)

tslint.json

@@ -1,76 +0,0 @@
-{
-  "extends": [
-    "tslint-eslint-rules"
-  ],
-  "rules": {
-    "ban": [true, ["alert"]],
-    "no-arg": true,
-    "no-conditional-assignment": true,
-    "no-console": false,
-    "no-constant-condition": true,
-    "no-control-regex": true,
-    "no-debugger": true,
-    "no-duplicate-case": true,
-    "no-empty": true,
-    "no-empty-character-class": true,
-    "no-eval": true,
-    "no-ex-assign": true,
-    "no-extra-boolean-cast": true,
-    "no-extra-semi": true,
-    "no-switch-case-fall-through": true,
-    "no-inner-declarations": [true, "functions"],
-    "no-invalid-regexp": true,
-    // this rule would cause problems with mocha test cases,
-    "no-invalid-this": false,
-    "no-irregular-whitespace": true,
-    "ter-no-irregular-whitespace": true,
-    "label-position": true,
-    "indent": [true, "spaces", 2],
-    "linebreak-style": [true, "unix"],
-    "no-multi-spaces": true,
-    "no-consecutive-blank-lines": [true, 2],
-    "no-unused-expression": true,
-    "no-construct": true,
-    "no-duplicate-variable": true,
-    "no-regex-spaces": true,
-    "no-shadowed-variable": true,
-    "ter-no-sparse-arrays": true,
-    "no-trailing-whitespace": true,
-    "no-string-throw": true,
-    "no-unexpected-multiline": true,
-    "no-unused-variable": [true, {"ignore-pattern": "^_"}],
-    "no-use-before-declare": true,
-    "no-var-keyword": true,
-    "no-magic-numbers": false,
-    "array-bracket-spacing": [true, "never"],
-    "ter-arrow-body-style": false,
-    "ter-arrow-parens": [true, "as-needed"],
-    "ter-arrow-spacing": true,
-    "block-spacing": true,
-    "brace-style": [true, "1tbs", {"allowSingleLine": true}],
-    "variable-name": false,
-    "trailing-comma": [true, {"multiline": "never", "singleline": "never"}],
-    "cyclomatic-complexity": [false, 11],
-    "curly": [true, "all"],
-    "switch-default": false,
-    "eofline": true,
-    "triple-equals": true,
-    "forin": false,
-    "handle-callback-err": true,
-    "ter-max-len": [true, 120],
-    "new-parens": true,
-    "object-curly-spacing": [true, "never"],
-    "object-literal-shorthand": false,
-    "one-variable-per-declaration": [true, "ignore-for-loop"],
-    "ter-prefer-arrow-callback": false,
-    "prefer-const": true,
-    "object-literal-key-quotes": false,
-    "quotemark": [true, "single"],
-    "radix": true,
-    "semicolon": [true, "never"],
-    "space-in-parens": [true, "never"],
-    "comment-format": [true, "check-space"],
-    "use-isnan": true,
-    "valid-typeof": true
-  }
-}