diff --git a/src/plugins/discover/public/application/components/table/table.test.tsx b/src/plugins/discover/public/application/components/table/table.test.tsx
index 0793072fd0cf46..29659b39693656 100644
--- a/src/plugins/discover/public/application/components/table/table.test.tsx
+++ b/src/plugins/discover/public/application/components/table/table.test.tsx
@@ -24,45 +24,47 @@ import { DocViewTable } from './table';
 import { indexPatterns, IndexPattern } from '../../../../../data/public';
 
 const indexPattern = {
-  fields: [
-    {
-      name: '_index',
-      type: 'string',
-      scripted: false,
-      filterable: true,
-    },
-    {
-      name: 'message',
-      type: 'string',
-      scripted: false,
-      filterable: false,
-    },
-    {
-      name: 'extension',
-      type: 'string',
-      scripted: false,
-      filterable: true,
-    },
-    {
-      name: 'bytes',
-      type: 'number',
-      scripted: false,
-      filterable: true,
-    },
-    {
-      name: 'scripted',
-      type: 'number',
-      scripted: true,
-      filterable: false,
-    },
-  ],
+  fields: {
+    getAll: () => [
+      {
+        name: '_index',
+        type: 'string',
+        scripted: false,
+        filterable: true,
+      },
+      {
+        name: 'message',
+        type: 'string',
+        scripted: false,
+        filterable: false,
+      },
+      {
+        name: 'extension',
+        type: 'string',
+        scripted: false,
+        filterable: true,
+      },
+      {
+        name: 'bytes',
+        type: 'number',
+        scripted: false,
+        filterable: true,
+      },
+      {
+        name: 'scripted',
+        type: 'number',
+        scripted: true,
+        filterable: false,
+      },
+    ],
+  },
   metaFields: ['_index', '_score'],
   flattenHit: undefined,
   formatHit: jest.fn((hit) => hit._source),
 } as IndexPattern;
 
 indexPattern.fields.getByName = (name: string) => {
-  return indexPattern.fields.find((field) => field.name === name);
+  return indexPattern.fields.getAll().find((field) => field.name === name);
 };
 
 indexPattern.flattenHit = indexPatterns.flattenHitWrapper(indexPattern, indexPattern.metaFields);
diff --git a/src/plugins/index_pattern_management/public/components/field_editor/__snapshots__/field_editor.test.tsx.snap b/src/plugins/index_pattern_management/public/components/field_editor/__snapshots__/field_editor.test.tsx.snap
index c22160bc4036d8..3f4190eed91707 100644
--- a/src/plugins/index_pattern_management/public/components/field_editor/__snapshots__/field_editor.test.tsx.snap
+++ b/src/plugins/index_pattern_management/public/components/field_editor/__snapshots__/field_editor.test.tsx.snap
@@ -25,11 +25,10 @@ exports[`FieldEditor should render create new scripted field correctly 1`] = `
       executeScript={[Function]}
       indexPattern={
         Object {
-          "fields": Array [
-            Object {
-              "name": "foobar",
-            },
-          ],
+          "fields": Object {
+            "getAll": [Function],
+            "getByName": [Function],
+          },
           "getFormatterForField": [Function],
         }
       }
@@ -261,19 +260,10 @@ exports[`FieldEditor should render edit scripted field correctly 1`] = `
       executeScript={[Function]}
       indexPattern={
         Object {
-          "fields": Array [
-            Object {
-              "name": "foobar",
-            },
-            Object {
-              "format": Format {},
-              "lang": "painless",
-              "name": "test",
-              "script": "doc.test.value",
-              "scripted": true,
-              "type": "number",
-            },
-          ],
+          "fields": Object {
+            "getAll": [Function],
+            "getByName": [Function],
+          },
           "getFormatterForField": [Function],
         }
       }
@@ -504,27 +494,10 @@ exports[`FieldEditor should show conflict field warning 1`] = `
       executeScript={[Function]}
       indexPattern={
         Object {
-          "fields": Array [
-            Object {
-              "name": "foobar",
-            },
-            Object {
-              "format": Format {},
-              "lang": "painless",
-              "name": "test",
-              "script": "doc.test.value",
-              "scripted": true,
-              "type": "number",
-            },
-            Object {
-              "format": Format {},
-              "lang": "testlang",
-              "name": "test",
-              "script": "doc.test.value",
-              "scripted": true,
-              "type": "number",
-            },
-          ],
+          "fields": Object {
+            "getAll": [Function],
+            "getByName": [Function],
+          },
           "getFormatterForField": [Function],
         }
       }
@@ -784,27 +757,10 @@ exports[`FieldEditor should show deprecated lang warning 1`] = `
       executeScript={[Function]}
       indexPattern={
         Object {
-          "fields": Array [
-            Object {
-              "name": "foobar",
-            },
-            Object {
-              "format": Format {},
-              "lang": "painless",
-              "name": "test",
-              "script": "doc.test.value",
-              "scripted": true,
-              "type": "number",
-            },
-            Object {
-              "format": Format {},
-              "lang": "testlang",
-              "name": "test",
-              "script": "doc.test.value",
-              "scripted": true,
-              "type": "number",
-            },
-          ],
+          "fields": Object {
+            "getAll": [Function],
+            "getByName": [Function],
+          },
           "getFormatterForField": [Function],
         }
       }
@@ -1116,27 +1072,10 @@ exports[`FieldEditor should show multiple type field warning with a table contai
       executeScript={[Function]}
       indexPattern={
         Object {
-          "fields": Array [
-            Object {
-              "name": "foobar",
-            },
-            Object {
-              "format": Format {},
-              "lang": "painless",
-              "name": "test",
-              "script": "doc.test.value",
-              "scripted": true,
-              "type": "number",
-            },
-            Object {
-              "format": Format {},
-              "lang": "testlang",
-              "name": "test",
-              "script": "doc.test.value",
-              "scripted": true,
-              "type": "number",
-            },
-          ],
+          "fields": Object {
+            "getAll": [Function],
+            "getByName": [Function],
+          },
           "getFormatterForField": [Function],
         }
       }
diff --git a/src/plugins/index_pattern_management/public/components/field_editor/field_editor.test.tsx b/src/plugins/index_pattern_management/public/components/field_editor/field_editor.test.tsx
index ba1f2ff4b665d9..96d3fc549ece01 100644
--- a/src/plugins/index_pattern_management/public/components/field_editor/field_editor.test.tsx
+++ b/src/plugins/index_pattern_management/public/components/field_editor/field_editor.test.tsx
@@ -17,12 +17,7 @@
  * under the License.
  */
 
-import {
-  IndexPattern,
-  IndexPatternField,
-  IIndexPatternFieldList,
-  FieldFormatInstanceType,
-} from 'src/plugins/data/public';
+import { IndexPattern, IndexPatternField, FieldFormatInstanceType } from 'src/plugins/data/public';
 
 jest.mock('brace/mode/groovy', () => ({}));
 
@@ -71,15 +66,19 @@ jest.mock('./components/field_format_editor', () => ({
   FieldFormatEditor: 'field-format-editor',
 }));
 
-const fields: IndexPatternField[] = [
+const fieldList = [
   {
     name: 'foobar',
   } as IndexPatternField,
 ];
 
+const fields = {
+  getAll: () => fieldList,
+};
+
 // @ts-ignore
 fields.getByName = (name: string) => {
-  return fields.find((field) => field.name === name);
+  return fields.getAll().find((field) => field.name === name);
 };
 
 class Format {
@@ -112,7 +111,7 @@ describe('FieldEditor', () => {
 
   beforeEach(() => {
     indexPattern = ({
-      fields: fields as IIndexPatternFieldList,
+      fields,
       getFormatterForField: () => ({ params: () => ({}) }),
     } as unknown) as IndexPattern;
   });
@@ -139,7 +138,7 @@ describe('FieldEditor', () => {
       name: 'test',
       script: 'doc.test.value',
     };
-    indexPattern.fields.push(testField as IndexPatternField);
+    fieldList.push(testField as IndexPatternField);
     indexPattern.fields.getByName = (name) => {
       const flds = {
         [testField.name]: testField,
@@ -169,7 +168,7 @@ describe('FieldEditor', () => {
       script: 'doc.test.value',
       lang: 'testlang',
     };
-    indexPattern.fields.push((testField as unknown) as IndexPatternField);
+    fieldList.push((testField as unknown) as IndexPatternField);
     indexPattern.fields.getByName = (name) => {
       const flds = {
         [testField.name]: testField,
diff --git a/src/plugins/input_control_vis/public/test_utils/get_deps_mock.tsx b/src/plugins/input_control_vis/public/test_utils/get_deps_mock.tsx
index feedcab1850eb7..f72bc96f9e7c18 100644
--- a/src/plugins/input_control_vis/public/test_utils/get_deps_mock.tsx
+++ b/src/plugins/input_control_vis/public/test_utils/get_deps_mock.tsx
@@ -26,6 +26,7 @@ fields.push({ name: 'myField' } as any);
 fields.getByName = (name: any) => {
   return fields.find(({ name: n }: { name: string }) => n === name);
 };
+fields.getAll = () => [...fields];
 
 export const getDepsMock = ({
   searchSource = {