diff --git a/devtools/.eslintrc.mjs b/devtools/.eslintrc.mjs
index 8e4d07a44529..d9434dc818d1 100644
--- a/devtools/.eslintrc.mjs
+++ b/devtools/.eslintrc.mjs
@@ -178,7 +178,12 @@ export default [
     },
   },
   {
-    files: ["client/framework/**"],
+    files: [
+      // Bug 1467784 - Fix these instances to have strict enabled.
+      "client/framework/**",
+      "client/shared/components/object-inspector/**",
+      "client/shared/components/test/node/stubs/object-inspector/",
+    ],
     rules: {
       strict: "off",
     },
diff --git a/devtools/client/debugger/src/client/firefox.js b/devtools/client/debugger/src/client/firefox.js
index 0e6329cdd70a..dd66c1577c1f 100644
--- a/devtools/client/debugger/src/client/firefox.js
+++ b/devtools/client/debugger/src/client/firefox.js
@@ -275,7 +275,9 @@ async function onTracingToggled() {
 function onDocumentEventAvailable(events) {
   for (const event of events) {
     // Only consider top level document, and ignore remote iframes top document
-    if (!event.targetFront.isTopLevel) continue;
+    if (!event.targetFront.isTopLevel) {
+      continue;
+    }
     // The browser toolbox debugger doesn't support the iframe dropdown.
     // you will always see all the sources of all targets of your debugging context.
     //
diff --git a/devtools/client/debugger/src/reducers/sources-tree.js b/devtools/client/debugger/src/reducers/sources-tree.js
index 7c388a274905..c58e25e185ad 100644
--- a/devtools/client/debugger/src/reducers/sources-tree.js
+++ b/devtools/client/debugger/src/reducers/sources-tree.js
@@ -488,7 +488,9 @@ function findSourceInThreadItem(source, threadItem) {
   const groupItem = threadItem.children.find(item => {
     return item.groupName == group;
   });
-  if (!groupItem) return null;
+  if (!groupItem) {
+    return null;
+  }
 
   const parentPath = path.substring(0, path.lastIndexOf("/"));
 
@@ -503,7 +505,9 @@ function findSourceInThreadItem(source, threadItem) {
   const directoryItem = groupItem._allGroupDirectoryItems.find(item => {
     return item.type == "directory" && item.path == parentPath;
   });
-  if (!directoryItem) return null;
+  if (!directoryItem) {
+    return null;
+  }
 
   return directoryItem.children.find(item => {
     return item.type == "source" && item.source == source;
diff --git a/devtools/client/debugger/src/reducers/tracer-frames.js b/devtools/client/debugger/src/reducers/tracer-frames.js
index 560ff8409ab7..6c4676c3a9c9 100644
--- a/devtools/client/debugger/src/reducers/tracer-frames.js
+++ b/devtools/client/debugger/src/reducers/tracer-frames.js
@@ -196,7 +196,9 @@ function update(state = initialState(), action) {
     case "SET_SELECTED_LOCATION": {
       // Traces are reference to the generated location only, so ignore any original source being selected
       // and wait for SET_GENERATED_SELECTED_LOCATION instead.
-      if (action.location.source.isOriginal) return state;
+      if (action.location.source.isOriginal) {
+        return state;
+      }
 
       // Ignore if the currently selected trace matches the new location.
       if (
diff --git a/devtools/client/debugger/src/selectors/pause.js b/devtools/client/debugger/src/selectors/pause.js
index 1421ba286ed6..7701a287c2f7 100644
--- a/devtools/client/debugger/src/selectors/pause.js
+++ b/devtools/client/debugger/src/selectors/pause.js
@@ -15,7 +15,9 @@ import { createSelector } from "devtools/client/shared/vendor/reselect";
 export const getSelectedFrame = createSelector(
   (state, thread) => state.pause.threads[thread || getCurrentThread(state)],
   threadPauseState => {
-    if (!threadPauseState) return null;
+    if (!threadPauseState) {
+      return null;
+    }
     const { selectedFrameId, frames } = threadPauseState;
     if (frames) {
       return frames.find(frame => frame.id == selectedFrameId);
diff --git a/devtools/client/shared/components/object-inspector/components/ObjectInspector.js b/devtools/client/shared/components/object-inspector/components/ObjectInspector.js
index 332b65ba833c..0fbcb36331fd 100644
--- a/devtools/client/shared/components/object-inspector/components/ObjectInspector.js
+++ b/devtools/client/shared/components/object-inspector/components/ObjectInspector.js
@@ -195,7 +195,7 @@ class ObjectInspector extends Component {
     const length = roots.length;
 
     for (let i = 0; i < length; i++) {
-      let rootItem = roots[i];
+      const rootItem = roots[i];
 
       if (evaluations.has(rootItem.path)) {
         roots[i] = getEvaluatedItem(rootItem, evaluations);
@@ -371,7 +371,7 @@ const OI = connect(mapStateToProps, actions)(ObjectInspector);
 module.exports = props => {
   const { roots, standalone = false } = props;
 
-  if (roots.length == 0) {
+  if (!roots.length) {
     return null;
   }
 
diff --git a/devtools/client/shared/components/object-inspector/reducer.js b/devtools/client/shared/components/object-inspector/reducer.js
index 1fd2866efa98..fc4933173649 100644
--- a/devtools/client/shared/components/object-inspector/reducer.js
+++ b/devtools/client/shared/components/object-inspector/reducer.js
@@ -53,7 +53,7 @@ function reducer(state = initialOIState(), action = {}) {
         path,
         updateObject(obj, property, null)
       ),
-      watchpoints: watchpoints,
+      watchpoints,
     });
   }
 
diff --git a/devtools/client/shared/components/object-inspector/utils/load-properties.js b/devtools/client/shared/components/object-inspector/utils/load-properties.js
index 42525e54f19e..cd91a34c49f3 100644
--- a/devtools/client/shared/components/object-inspector/utils/load-properties.js
+++ b/devtools/client/shared/components/object-inspector/utils/load-properties.js
@@ -106,11 +106,11 @@ function mergeResponses(responses) {
       data.ownProperties = { ...data.ownProperties, ...response.ownProperties };
     }
 
-    if (response.privateProperties && response.privateProperties.length > 0) {
+    if (response.privateProperties && response.privateProperties.length) {
       data.privateProperties = response.privateProperties;
     }
 
-    if (response.ownSymbols && response.ownSymbols.length > 0) {
+    if (response.ownSymbols && response.ownSymbols.length) {
       data.ownSymbols = response.ownSymbols;
     }
 
diff --git a/devtools/client/shared/components/object-inspector/utils/node.js b/devtools/client/shared/components/object-inspector/utils/node.js
index de8e2b300ee2..5b62cc512b29 100644
--- a/devtools/client/shared/components/object-inspector/utils/node.js
+++ b/devtools/client/shared/components/object-inspector/utils/node.js
@@ -497,7 +497,7 @@ function makeDefaultPropsBucket(propertiesNames, parent, ownProperties) {
     ownProperties
   );
 
-  if (defaultProperties.length > 0) {
+  if (defaultProperties.length) {
     const defaultPropertiesNode = createNode({
       parent,
       name: "<default properties>",
diff --git a/devtools/server/actors/object/previewers.js b/devtools/server/actors/object/previewers.js
index 015597be5f88..de346c87cf98 100644
--- a/devtools/server/actors/object/previewers.js
+++ b/devtools/server/actors/object/previewers.js
@@ -342,7 +342,7 @@ const previewers = {
 
       grip.preview = {
         kind: "ArrayLike",
-        length: length,
+        length,
       };
 
       if (depth > 1) {
@@ -462,7 +462,7 @@ const previewers = {
 
       grip.preview = {
         kind: "MapLike",
-        size: size,
+        size,
       };
 
       if (depth > 1) {
@@ -908,7 +908,7 @@ function GenericObject(objectActor, grip, depth) {
   const privatePropertiesSymbols = ObjectUtils.getSafePrivatePropertiesSymbols(
     obj
   );
-  if (privatePropertiesSymbols.length > 0) {
+  if (privatePropertiesSymbols.length) {
     preview.privatePropertiesLength = privatePropertiesSymbols.length;
     preview.privateProperties = [];
 
@@ -945,7 +945,7 @@ function GenericObject(objectActor, grip, depth) {
   }
 
   const symbols = ObjectUtils.getSafeOwnPropertySymbols(obj);
-  if (symbols.length > 0) {
+  if (symbols.length) {
     preview.ownSymbolsLength = symbols.length;
     preview.ownSymbols = [];
 
@@ -1244,7 +1244,7 @@ previewers.Object = [
       const privatePropertiesSymbols = ObjectUtils.getSafePrivatePropertiesSymbols(
         obj
       );
-      if (privatePropertiesSymbols.length > 0) {
+      if (privatePropertiesSymbols.length) {
         preview.privatePropertiesLength = privatePropertiesSymbols.length;
       }
     } else if (className == "Attr") {
diff --git a/devtools/server/actors/object/property-iterator.js b/devtools/server/actors/object/property-iterator.js
index 1dd46792bb06..9557bb1696fa 100644
--- a/devtools/server/actors/object/property-iterator.js
+++ b/devtools/server/actors/object/property-iterator.js
@@ -299,7 +299,7 @@ function enumMapEntries(objectActor, depth) {
   const entries = getMapEntries(objectActor);
 
   return {
-    [Symbol.iterator]: function*() {
+    *[Symbol.iterator]() {
       for (const [key, value] of entries) {
         yield [key, value].map(val => gripFromEntry(objectActor, val, depth));
       }
@@ -335,7 +335,7 @@ function enumStorageEntries(objectActor, depth) {
     keys.push(rawObj.key(i));
   }
   return {
-    [Symbol.iterator]: function*() {
+    *[Symbol.iterator]() {
       for (const key of keys) {
         const value = rawObj.getItem(key);
         yield [key, value].map(val => gripFromEntry(objectActor, val, depth));
@@ -366,7 +366,7 @@ function enumURLSearchParamsEntries(objectActor, depth) {
   const entries = [...waiveXrays(URLSearchParams.prototype.entries.call(objectActor.rawObj))];
 
   return {
-    [Symbol.iterator]: function*() {
+    *[Symbol.iterator]() {
       for (const [key, value] of entries) {
         yield [key, value];
       }
@@ -398,7 +398,7 @@ function enumFormDataEntries(objectActor, depth) {
   const entries = [...waiveXrays(FormData.prototype.entries.call(objectActor.rawObj))];
 
   return {
-    [Symbol.iterator]: function*() {
+    *[Symbol.iterator]() {
       for (const [key, value] of entries) {
         yield [key, value];
       }
@@ -428,7 +428,7 @@ function enumHeadersEntries(objectActor, depth) {
   const entries = [...waiveXrays(Headers.prototype.entries.call(objectActor.rawObj))];
 
   return {
-    [Symbol.iterator]: function*() {
+    *[Symbol.iterator]() {
       for (const [key, value] of entries) {
         yield [key, value];
       }
@@ -454,7 +454,7 @@ function enumHighlightRegistryEntries(objectActor, depth) {
     : [];
 
   return {
-    [Symbol.iterator]: function*() {
+    *[Symbol.iterator]() {
       for (const [key, value] of entries) {
         yield [key, gripFromEntry(objectActor, value, depth)];
       }
@@ -470,7 +470,7 @@ function enumHighlightRegistryEntries(objectActor, depth) {
         value: {
           type: "highlightRegistryEntry",
           preview: {
-            key: key,
+            key,
             value: gripFromEntry(objectActor, value, depth),
           },
         },
@@ -488,7 +488,7 @@ function enumMidiInputMapEntries(objectActor, depth) {
   );
 
   return {
-    [Symbol.iterator]: function*() {
+    *[Symbol.iterator]() {
       for (const [key, value] of entries) {
         yield [key, gripFromEntry(objectActor, value, depth)];
       }
@@ -515,7 +515,7 @@ function enumMidiOutputMapEntries(objectActor, depth) {
   );
 
   return {
-    [Symbol.iterator]: function*() {
+    *[Symbol.iterator]() {
       for (const [key, value] of entries) {
         yield [key, gripFromEntry(objectActor, value, depth)];
       }
@@ -553,7 +553,7 @@ function enumWeakMapEntries(objectActor, depth) {
   const entries = getWeakMapEntries(objectActor.rawObj);
 
   return {
-    [Symbol.iterator]: function*() {
+    *[Symbol.iterator]() {
       for (let i = 0; i < entries.length; i++) {
         yield entries[i].map(val => gripFromEntry(objectActor, val, depth));
       }
@@ -601,7 +601,7 @@ function enumSetEntries(objectActor, depth) {
   );
 
   return {
-    [Symbol.iterator]: function*() {
+    *[Symbol.iterator]() {
       for (const item of values) {
         yield gripFromEntry(objectActor, item, depth);
       }
@@ -638,7 +638,7 @@ function enumWeakSetEntries(objectActor, depth) {
   const keys = getWeakSetEntries(objectActor.rawObj);
 
   return {
-    [Symbol.iterator]: function*() {
+    *[Symbol.iterator]() {
       for (const item of keys) {
         yield gripFromEntry(objectActor, item, depth);
       }
@@ -658,7 +658,7 @@ function enumWeakSetEntries(objectActor, depth) {
 }
 
 function enumCustomStateSetEntries(objectActor, depth) {
-  let { rawObj } = objectActor;
+  const { rawObj } = objectActor;
   // We need to waive `rawObj` as we can't get the iterator from the Xray for SetLike (See Bug 1173651).
   // We also need to waive Xrays on the result of the call to `values` as we don't have
   // Xrays to Iterator objects (see Bug 1023984)
@@ -667,7 +667,7 @@ function enumCustomStateSetEntries(objectActor, depth) {
   );
 
   return {
-    [Symbol.iterator]: function*() {
+    *[Symbol.iterator]() {
       for (const item of values) {
         yield gripFromEntry(objectActor, item, depth);
       }
diff --git a/devtools/shared/tests/objects/JSObjectsTestUtils.sys.mjs b/devtools/shared/tests/objects/JSObjectsTestUtils.sys.mjs
index ae66d61b9c36..19d6df44a4a3 100644
--- a/devtools/shared/tests/objects/JSObjectsTestUtils.sys.mjs
+++ b/devtools/shared/tests/objects/JSObjectsTestUtils.sys.mjs
@@ -2,16 +2,14 @@
  * http://creativecommons.org/publicdomain/zero/1.0/
  */
 
-import { TEST_PAGE_HTML, CONTEXTS, AllObjects } from "resource://testing-common/AllJavascriptTypes.mjs";
-export { CONTEXTS } from "resource://testing-common/AllJavascriptTypes.mjs";
 import { ObjectUtils } from "resource://gre/modules/ObjectUtils.sys.mjs";
+import { TEST_PAGE_HTML, CONTEXTS, AllObjects } from "resource://testing-common/AllJavascriptTypes.mjs";
+import { AddonTestUtils } from "resource://testing-common/AddonTestUtils.sys.mjs"
 
 // Name of the environment variable to set while running the test to update the expected values
 const UPDATE_SNAPSHOT_ENV = "UPDATE_SNAPSHOT";
 
-const { AddonTestUtils } = ChromeUtils.importESModule(
-  "resource://testing-common/AddonTestUtils.sys.mjs"
-);
+export { CONTEXTS } from "resource://testing-common/AllJavascriptTypes.mjs";
 
 // To avoid totally unrelated exceptions about missing appinfo when running from xpcshell tests
 const isXpcshell = Services.env.exists("XPCSHELL_TEST_PROFILE_DIR");
@@ -54,7 +52,7 @@ function init(testScope) {
   });
 
   // Lookup for all preferences to toggle in order to have all the expected objects type functional
-  let prefValues = new Map();
+  const prefValues = new Map();
   for (const { prefs } of AllObjects) {
     if (!prefs) {
       continue;