Fix lint issues

package.json

@@ -83,6 +83,9 @@
       "./node_modules/kcd-scripts/eslint.js",
       "plugin:import/typescript"
     ],
+    "parserOptions": {
+      "ecmaVersion": 2020
+    },
     "rules": {
       "@typescript-eslint/prefer-optional-chain": "off",
       "@typescript-eslint/no-explicit-any": "off",

src/__tests__/config.js

@@ -11,14 +11,15 @@ describe('configuration API', () => {
       return {}
     })
   })
-  afterEach(() => {
-    configure(originalConfig)
-  })
 
   beforeEach(() => {
     configure({other: 123})
   })
 
+  afterEach(() => {
+    configure(originalConfig)
+  })
+
   describe('getConfig', () => {
     test('returns existing configuration', () => {
       const conf = getConfig()

src/__tests__/fake-timers.js

@@ -70,6 +70,7 @@ test('recursive timers do not cause issues', async () => {
   let recurse = true
   function startTimer() {
     setTimeout(() => {
+      // eslint-disable-next-line jest/no-conditional-in-test -- false-positive
       if (recurse) startTimer()
     }, 1)
   }

src/__tests__/role.js

@@ -274,6 +274,7 @@ test('accessible name filter implements TextMatch', () => {
   expect(
     getByRole('heading', {
       name: (name, element) => {
+        // eslint-disable-next-line jest/no-conditional-in-test -- false-positive
         return element.nodeName === 'H2' && name === 'Your Signature'
       },
     }),

src/__tests__/wait-for-element-to-be-removed.js

@@ -98,6 +98,7 @@ test('rethrows non-testing-lib errors', () => {
   const error = new Error('my own error')
   return expect(
     waitForElementToBeRemoved(() => {
+      // eslint-disable-next-line jest/no-conditional-in-test -- false-positive
       if (throwIt) {
         throw error
       }

src/__tests__/wait-for.js

@@ -275,7 +275,7 @@ test('does not work after it resolves', async () => {
       context = 'act'
       try {
         const result = callback()
-        // eslint-disable-next-line jest/no-if
+        // eslint-disable-next-line jest/no-if, jest/no-conditional-in-test -- false-positive
         if (typeof result?.then === 'function') {
           const thenable = result
           return {
@@ -319,6 +319,7 @@ test('does not work after it resolves', async () => {
 
   await waitFor(
     () => {
+      // eslint-disable-next-line jest/no-conditional-in-test -- false-positive
       if (data === null) {
         throw new Error('not found')
       }

src/helpers.ts

@@ -10,6 +10,7 @@ function jestFakeTimersAreEnabled() {
       // legacy timers
       (setTimeout as any)._isMockFunction === true ||
       // modern timers
+      // eslint-disable-next-line prefer-object-has-own -- not supported by our support matrix
       Object.prototype.hasOwnProperty.call(setTimeout, 'clock')
     )
   }

src/queries/label-text.ts

@@ -71,20 +71,23 @@ const queryAllByLabelText: AllByText = (
           if (
             matcher(label.content, label.formControl, text, matchNormalizer) &&
             label.formControl
-          )
+          ) {
             labelledElements.push(label.formControl)
+          }
         })
       const labelsValue = labelList
         .filter(label => Boolean(label.content))
         .map(label => label.content)
       if (
         matcher(labelsValue.join(' '), labelledElement, text, matchNormalizer)
-      )
+      ) {
         labelledElements.push(labelledElement)
+      }
       if (labelsValue.length > 1) {
         labelsValue.forEach((labelValue, index) => {
-          if (matcher(labelValue, labelledElement, text, matchNormalizer))
+          if (matcher(labelValue, labelledElement, text, matchNormalizer)) {
             labelledElements.push(labelledElement)
+          }
 
           const labelsFiltered = [...labelsValue]
           labelsFiltered.splice(index, 1)
@@ -97,8 +100,9 @@ const queryAllByLabelText: AllByText = (
                 text,
                 matchNormalizer,
               )
-            )
+            ) {
               labelledElements.push(labelledElement)
+            }
           }
         })
       }