chore: upgrade devDependencies; simplify config; lint

Author: mattbretl

.eslintrc.js

@@ -1,45 +1,9 @@
 module.exports = {
-  parserOptions: {
-    sourceType: "module",
-    ecmaVersion: 2017,
-    ecmaFeatures: {
-      experimentalObjectRestSpread: true
-    },
-  },
-  extends: ["eslint:recommended", "prettier"],
-  plugins: ["prettier"],
   env: {
     node: true,
-    es6: true,
   },
-  rules: {
-    "prettier/prettier": [
-      "error",
-      {
-        trailingComma: "es5",
-      },
-    ],
-    "comma-dangle": [
-      2,
-      {
-        arrays: "always-multiline",
-        objects: "always-multiline",
-        imports: "always-multiline",
-        exports: "always-multiline",
-        functions: "never",
-      },
-    ],
-    "no-confusing-arrow": 0,
-    "no-else-return": 0,
-    "no-underscore-dangle": 0,
-    "no-unused-vars": [
-      2,
-      {
-        argsIgnorePattern: "^_",
-      },
-    ],
-    "no-restricted-syntax": 0,
-    "no-await-in-loop": 0,
-    camelcase: 0,
+  parserOptions: {
+    ecmaVersion: 9,
   },
+  extends: ["plugin:prettier/recommended"],
 };

.prettierrc.json

@@ -0,0 +1,3 @@
+{
+  "trailingComma": "es5"
+}

package.json

@@ -17,20 +17,23 @@
     "url": "https://github.com/graphile-contrib/postgraphile-plugin-connection-filter/issues"
   },
   "devDependencies": {
-    "eslint": "^4.0.0",
-    "eslint-config-prettier": "2.3.0",
+    "eslint": "^5.12.0",
+    "eslint-config-prettier": "^3.3.0",
     "eslint-plugin-jest": "^20.0.3",
-    "eslint-plugin-prettier": "^2.1.2",
+    "eslint-plugin-prettier": "^3.0.1",
     "graphql": ">=0.9 <0.14",
     "jest": "23.5.0",
     "pg": ">=6.1.0 <8",
     "postgraphile-core": "^4.0.0",
-    "prettier": "1.14.2"
+    "prettier": "1.15.3"
   },
   "jest": {
     "testRegex": "__tests__/.*\\.test\\.js$"
   },
   "files": [
     "src"
-  ]
+  ],
+  "engines": {
+    "node": ">=8.6"
+  }
 }

src/PgConnectionArgFilterPlugin.js

@@ -304,17 +304,17 @@ module.exports = function PgConnectionArgFilterPlugin(
       const sqlValue = operator.options.resolveWithRawInput
         ? input
         : Array.isArray(input)
-          ? pgType.isPgArray
-            ? sqlValueFromInput(input, pgType, pgTypeModifier)
-            : input.length === 0
-              ? sql.query`(select ${sqlIdentifier} limit 0)`
-              : sql.query`(${sql.join(
-                  input.map(i => sqlValueFromInput(i, pgType, pgTypeModifier)),
-                  ","
-                )})`
-          : pgType.isPgArray
-            ? sqlValueFromInput(input, pgType.arrayItemType, pgTypeModifier)
-            : sqlValueFromInput(input, pgType, pgTypeModifier);
+        ? pgType.isPgArray
+          ? sqlValueFromInput(input, pgType, pgTypeModifier)
+          : input.length === 0
+          ? sql.query`(select ${sqlIdentifier} limit 0)`
+          : sql.query`(${sql.join(
+              input.map(i => sqlValueFromInput(i, pgType, pgTypeModifier)),
+              ","
+            )})`
+        : pgType.isPgArray
+        ? sqlValueFromInput(input, pgType.arrayItemType, pgTypeModifier)
+        : sqlValueFromInput(input, pgType, pgTypeModifier);
 
       return operator.resolveWhereClause(
         sqlIdentifier,