[ML] Transforms: Removes temporary x-pack/legacy/plugins/transform eslint overrides.

Re-enables linting rules related to React hooks and adapts inline code.

.eslintrc.js

@@ -229,12 +229,6 @@ module.exports = {
         'react-hooks/exhaustive-deps': 'off',
       },
     },
-    {
-      files: ['x-pack/legacy/plugins/transform/**/*.{js,ts,tsx}'],
-      rules: {
-        'react-hooks/exhaustive-deps': 'off',
-      },
-    },
     {
       files: ['x-pack/legacy/plugins/uptime/**/*.{js,ts,tsx}'],
       rules: {

x-pack/legacy/plugins/transform/public/app/common/transform.ts

@@ -95,6 +95,8 @@ export const useRefreshTransformList = (
     return () => {
       subscriptions.map(sub => sub.unsubscribe());
     };
+    // The effect should only be called once.
+    // eslint-disable-next-line react-hooks/exhaustive-deps
   }, []);
 
   return {

x-pack/legacy/plugins/transform/public/app/lib/kibana/kibana_provider.tsx

@@ -75,6 +75,8 @@ export const KibanaProvider: FC<Props> = ({ savedObjectId, children }) => {
 
   useEffect(() => {
     fetchSavedObject(savedObjectId);
+    // fetchSavedObject should not be tracked.
+    // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [savedObjectId]);
 
   return <KibanaContext.Provider value={contextValue}>{children}</KibanaContext.Provider>;

x-pack/legacy/plugins/transform/public/app/sections/create_transform/components/source_index_preview/use_source_index_data.ts

@@ -131,6 +131,8 @@ export const useSourceIndexData = (
 
   useEffect(() => {
     getSourceIndexData();
+    // custom comparison
+    // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [indexPattern.title, JSON.stringify(query)]);
   return { errorMessage, status, tableItems };
 };

x-pack/legacy/plugins/transform/public/app/sections/create_transform/components/step_create/step_create_form.tsx

@@ -76,6 +76,8 @@ export const StepCreateForm: SFC<Props> = React.memo(
 
     useEffect(() => {
       onChange({ created, started, indexPatternId });
+      // custom comparison
+      // eslint-disable-next-line react-hooks/exhaustive-deps
     }, [created, started, indexPatternId]);
 
     const api = useApi();

x-pack/legacy/plugins/transform/public/app/sections/create_transform/components/step_define/pivot_preview.tsx

@@ -150,7 +150,7 @@ export const PivotPreview: SFC<PivotPreviewProps> = React.memo(({ aggs, groupBy,
     if (clearTable) {
       setTimeout(() => setClearTable(false), 0);
     }
-  });
+  }, [firstColumnNameChanged, clearTable]);
 
   if (firstColumnNameChanged) {
     return null;

x-pack/legacy/plugins/transform/public/app/sections/create_transform/components/step_define/step_define_form.tsx

@@ -487,6 +487,8 @@ export const StepDefineForm: SFC<Props> = React.memo(({ overrides = {}, onChange
       sourceConfigUpdated,
       valid,
     });
+    // custom comparison
+    /* eslint-disable react-hooks/exhaustive-deps */
   }, [
     JSON.stringify(pivotAggsArr),
     JSON.stringify(pivotGroupByArr),
@@ -495,6 +497,7 @@ export const StepDefineForm: SFC<Props> = React.memo(({ overrides = {}, onChange
     searchString,
     searchQuery,
     valid,
+    /* eslint-enable react-hooks/exhaustive-deps */
   ]);
 
   // TODO This should use the actual value of `indices.query.bool.max_clause_count`

x-pack/legacy/plugins/transform/public/app/sections/create_transform/components/step_define/use_pivot_preview_data.ts

@@ -91,11 +91,14 @@ export const usePivotPreviewData = (
 
   useEffect(() => {
     getPreviewData();
+    // custom comparison
+    /* eslint-disable react-hooks/exhaustive-deps */
   }, [
     indexPattern.title,
     JSON.stringify(aggsArr),
     JSON.stringify(groupByArr),
     JSON.stringify(query),
+    /* eslint-enable react-hooks/exhaustive-deps */
   ]);
 
   return { errorMessage, status, previewData, previewMappings, previewRequest };

x-pack/legacy/plugins/transform/public/app/sections/create_transform/components/step_details/step_details_form.tsx

@@ -121,6 +121,8 @@ export const StepDetailsForm: SFC<Props> = React.memo(({ overrides = {}, onChang
         }
       }
     })();
+    // custom comparison
+    // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [kibanaContext.initialized]);
 
   if (!isKibanaContextInitialized(kibanaContext)) {
@@ -169,6 +171,8 @@ export const StepDetailsForm: SFC<Props> = React.memo(({ overrides = {}, onChang
       touched: true,
       valid,
     });
+    // custom comparison
+    /* eslint-disable react-hooks/exhaustive-deps */
   }, [
     continuousModeDateField,
     continuousModeDelay,
@@ -178,6 +182,7 @@ export const StepDetailsForm: SFC<Props> = React.memo(({ overrides = {}, onChang
     transformDescription,
     destinationIndex,
     valid,
+    /* eslint-enable react-hooks/exhaustive-deps */
   ]);
 
   return (

x-pack/legacy/plugins/transform/public/app/sections/transform_management/components/transform_list/use_refresh_interval.ts

@@ -77,5 +77,7 @@ export const useRefreshInterval = (
       refreshIntervalSubscription.unsubscribe();
       clearRefreshInterval();
     };
+    // custom comparison
+    // eslint-disable-next-line react-hooks/exhaustive-deps
   }, []); // [] as comparator makes sure this only runs once
 };