Merge pull request #3206 from WordPress/update/eslint-stricter-rules

Framework: Reinstate stricter ESLint rules

.eslintrc.json

@@ -47,6 +47,7 @@
 		"constructor-super": "error",
 		"dot-notation": "error",
 		"eol-last": "error",
+		"eqeqeq": "error",
 		"func-call-spacing": "error",
 		"indent": [ "error", "tab", { "SwitchCase": 1 } ],
 		"jsx-a11y/label-has-for": [ "error", {
@@ -61,6 +62,7 @@
 		"lines-around-comment": "off",
 		"no-alert": "error",
 		"no-bitwise": "error",
+		"no-caller": "error",
 		"no-console": "error",
 		"no-const-assign": "error",
 		"no-debugger": "error",
@@ -105,13 +107,14 @@
 		"no-undef-init": "error",
 		"no-unreachable": "error",
 		"no-unsafe-negation": "error",
+		"no-unused-expressions": "error",
+		"no-unused-vars": "error",
 		"no-useless-computed-key": "error",
 		"no-useless-constructor": "error",
 		"no-useless-return": "error",
 		"no-var": "error",
 		"no-whitespace-before-property": "error",
 		"object-curly-spacing": [ "error", "always" ],
-		"one-var": "off",
 		"padded-blocks": [ "error", "never" ],
 		"prefer-const": "error",
 		"quote-props": [ "error", "as-needed" ],

editor/modes/visual-editor/block-list.js

@@ -15,7 +15,7 @@ import {
  * WordPress dependencies
  */
 import { __ } from '@wordpress/i18n';
-import { Component, findDOMNode } from '@wordpress/element';
+import { Component } from '@wordpress/element';
 import { serialize, getDefaultBlockName, createBlock } from '@wordpress/blocks';
 
 /**