style(lint): enable eqeqeq rule (#62)

* style(lint): enable eqeqeq rule

https://eslint.org/docs/rules/eqeqeq

* Update .eslintrc.js

Author: macklinu

.eslintrc.js

@@ -16,6 +16,7 @@ module.exports = {
     node: true,
   },
   rules: {
+    eqeqeq: ['error', 'smart'],
     strict: 'error',
     'eslint-plugin/require-meta-docs-url': [
       'error',

rules/util.js

@@ -2,7 +2,7 @@
 
 const expectCase = node =>
   node.callee.name === 'expect' &&
-  node.arguments.length == 1 &&
+  node.arguments.length === 1 &&
   node.parent &&
   node.parent.type === 'MemberExpression' &&
   node.parent.parent;

rules/valid-expect-in-promise.js

@@ -8,7 +8,7 @@ const reportMsg =
 const isThenOrCatch = node => {
   return (
     node.property &&
-    (node.property.name == 'then' || node.property.name == 'catch')
+    (node.property.name === 'then' || node.property.name === 'catch')
   );
 };
 
@@ -27,7 +27,7 @@ const isExpectCallPresentInFunction = body => {
 const isExpectCall = expression => {
   return (
     expression &&
-    expression.type == 'CallExpression' &&
+    expression.type === 'CallExpression' &&
     expression.callee.type === 'MemberExpression' &&
     expression.callee.object.type === 'CallExpression' &&
     expression.callee.object.callee.name === 'expect'
@@ -86,8 +86,8 @@ const getTestFunction = node => {
 
 const isParentThenOrPromiseReturned = (node, testFunctionBody) => {
   return (
-    testFunctionBody.type == 'CallExpression' ||
-    node.parent.parent.type == 'ReturnStatement' ||
+    testFunctionBody.type === 'CallExpression' ||
+    node.parent.parent.type === 'ReturnStatement' ||
     isPromiseReturnedLater(node, testFunctionBody) ||
     isThenOrCatch(node.parent.parent)
   );
@@ -113,7 +113,7 @@ const verifyExpectWithReturn = (
 };
 
 const isAwaitExpression = node => {
-  return node.parent.parent && node.parent.parent.type == 'AwaitExpression';
+  return node.parent.parent && node.parent.parent.type === 'AwaitExpression';
 };
 
 const isHavingAsyncCallBackParam = testFunction => {
@@ -135,9 +135,9 @@ module.exports = {
     return {
       MemberExpression(node) {
         if (
-          node.type == 'MemberExpression' &&
+          node.type === 'MemberExpression' &&
           isThenOrCatch(node) &&
-          node.parent.type == 'CallExpression' &&
+          node.parent.type === 'CallExpression' &&
           !isAwaitExpression(node)
         ) {
           const testFunction = getTestFunction(node);