diff --git a/devtools/client/debugger/src/actions/source-actors.js b/devtools/client/debugger/src/actions/source-actors.js
index 5d8f2de3025d..bc09d8ab9e9e 100644
--- a/devtools/client/debugger/src/actions/source-actors.js
+++ b/devtools/client/debugger/src/actions/source-actors.js
@@ -6,7 +6,7 @@ import {
   getSourceActor,
   getSourceActorBreakableLines,
   getSourceActorBreakpointColumns,
-} from "../reducers/source-actors";
+} from "../selectors/source-actors";
 import { memoizeableAction } from "../utils/memoizableAction";
 import { PROMISE } from "./utils/middleware/promise";
 
diff --git a/devtools/client/debugger/src/reducers/source-actors.js b/devtools/client/debugger/src/reducers/source-actors.js
index aeb1b378bef6..9fcd019dcc92 100644
--- a/devtools/client/debugger/src/reducers/source-actors.js
+++ b/devtools/client/debugger/src/reducers/source-actors.js
@@ -2,7 +2,6 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
 
-import { asSettled } from "../utils/async-value";
 import {
   createInitial,
   insertResources,
@@ -10,10 +9,6 @@ import {
   removeResources,
   hasResource,
   getResource,
-  getMappedResource,
-  makeWeakQuery,
-  makeIdQuery,
-  makeReduceAllQuery,
 } from "../utils/resource";
 
 import { asyncActionAsValue } from "../actions/utils/middleware/promise";
@@ -112,94 +107,3 @@ function updateBreakableLines(state, action) {
 
   return updateResources(state, [{ id: sourceId, breakableLines: value }]);
 }
-
-export function resourceAsSourceActor({
-  breakpointPositions,
-  breakableLines,
-  ...sourceActor
-}) {
-  return sourceActor;
-}
-
-export function hasSourceActor(state, id) {
-  return hasResource(state.sourceActors, id);
-}
-
-export function getSourceActor(state, id) {
-  return getMappedResource(state.sourceActors, id, resourceAsSourceActor);
-}
-
-/**
- * Get all of the source actors for a set of IDs. Caches based on the identity
- * of "ids" when possible.
- */
-const querySourceActorsById = makeIdQuery(resourceAsSourceActor);
-
-export function getSourceActors(state, ids) {
-  return querySourceActorsById(state.sourceActors, ids);
-}
-
-const querySourcesByThreadID = makeReduceAllQuery(
-  resourceAsSourceActor,
-  actors => {
-    return actors.reduce((acc, actor) => {
-      acc[actor.thread] = acc[actor.thread] || [];
-      acc[actor.thread].push(actor);
-      return acc;
-    }, {});
-  }
-);
-export function getSourceActorsForThread(state, ids) {
-  const sourcesByThread = querySourcesByThreadID(state.sourceActors);
-
-  let sources = [];
-  for (const id of Array.isArray(ids) ? ids : [ids]) {
-    sources = sources.concat(sourcesByThread[id] || []);
-  }
-  return sources;
-}
-
-const queryThreadsBySourceObject = makeReduceAllQuery(
-  actor => ({ thread: actor.thread, source: actor.source }),
-  actors =>
-    actors.reduce((acc, { source, thread }) => {
-      let sourceThreads = acc[source];
-      if (!sourceThreads) {
-        sourceThreads = [];
-        acc[source] = sourceThreads;
-      }
-
-      sourceThreads.push(thread);
-      return acc;
-    }, {})
-);
-
-export function getAllThreadsBySource(state) {
-  return queryThreadsBySourceObject(state.sourceActors);
-}
-
-export function getSourceActorBreakableLines(state, id) {
-  const { breakableLines } = getResource(state.sourceActors, id);
-
-  return asSettled(breakableLines);
-}
-
-export function getSourceActorBreakpointColumns(state, id, line) {
-  const { breakpointPositions } = getResource(state.sourceActors, id);
-
-  return asSettled(breakpointPositions.get(line) || null);
-}
-
-export const getBreakableLinesForSourceActors = makeWeakQuery({
-  filter: (state, ids) => ids,
-  map: ({ breakableLines }) => breakableLines,
-  reduce: items =>
-    Array.from(
-      items.reduce((acc, item) => {
-        if (item && item.state === "fulfilled") {
-          acc = acc.concat(item.value);
-        }
-        return acc;
-      }, [])
-    ),
-});
diff --git a/devtools/client/debugger/src/selectors/index.js b/devtools/client/debugger/src/selectors/index.js
index 404fe9d48636..583371cf3030 100644
--- a/devtools/client/debugger/src/selectors/index.js
+++ b/devtools/client/debugger/src/selectors/index.js
@@ -6,13 +6,6 @@ export * from "../reducers/expressions";
 export * from "../reducers/tabs";
 export * from "../reducers/threads";
 
-export {
-  getSourceActor,
-  hasSourceActor,
-  getSourceActors,
-  getSourceActorsForThread,
-} from "../reducers/source-actors";
-
 export * from "./ast";
 export * from "./breakpoints";
 export {
@@ -33,6 +26,7 @@ export * from "./pending-breakpoints";
 export * from "./preview";
 export * from "./project-text-search";
 export * from "./quick-open";
+export * from "./source-actors";
 export * from "./source-tree";
 export * from "./sources";
 export * from "./tabs";
diff --git a/devtools/client/debugger/src/selectors/moz.build b/devtools/client/debugger/src/selectors/moz.build
index fce192344172..6cdca7b5604c 100644
--- a/devtools/client/debugger/src/selectors/moz.build
+++ b/devtools/client/debugger/src/selectors/moz.build
@@ -22,6 +22,7 @@ CompiledModules(
     "preview.js",
     "project-text-search.js",
     "quick-open.js",
+    "source-actors.js",
     "source-tree.js",
     "sources.js",
     "tabs.js",
diff --git a/devtools/client/debugger/src/selectors/source-actors.js b/devtools/client/debugger/src/selectors/source-actors.js
new file mode 100644
index 000000000000..ef7050183ba2
--- /dev/null
+++ b/devtools/client/debugger/src/selectors/source-actors.js
@@ -0,0 +1,108 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
+
+import { asSettled } from "../utils/async-value";
+import {
+  hasResource,
+  getResource,
+  getMappedResource,
+  makeWeakQuery,
+  makeIdQuery,
+  makeReduceAllQuery,
+} from "../utils/resource";
+
+function resourceAsSourceActor({
+  breakpointPositions,
+  breakableLines,
+  ...sourceActor
+}) {
+  return sourceActor;
+}
+
+export function hasSourceActor(state, id) {
+  return hasResource(state.sourceActors, id);
+}
+
+export function getSourceActor(state, id) {
+  return getMappedResource(state.sourceActors, id, resourceAsSourceActor);
+}
+
+/**
+ * Get all of the source actors for a set of IDs. Caches based on the identity
+ * of "ids" when possible.
+ */
+const querySourceActorsById = makeIdQuery(resourceAsSourceActor);
+
+// Used by sources selectors
+export function getSourceActors(state, ids) {
+  return querySourceActorsById(state.sourceActors, ids);
+}
+
+const querySourcesByThreadID = makeReduceAllQuery(
+  resourceAsSourceActor,
+  actors => {
+    return actors.reduce((acc, actor) => {
+      acc[actor.thread] = acc[actor.thread] || [];
+      acc[actor.thread].push(actor);
+      return acc;
+    }, {});
+  }
+);
+// Used by threads selectors
+export function getSourceActorsForThread(state, ids) {
+  const sourcesByThread = querySourcesByThreadID(state.sourceActors);
+
+  let sources = [];
+  for (const id of Array.isArray(ids) ? ids : [ids]) {
+    sources = sources.concat(sourcesByThread[id] || []);
+  }
+  return sources;
+}
+
+const queryThreadsBySourceObject = makeReduceAllQuery(
+  actor => ({ thread: actor.thread, source: actor.source }),
+  actors =>
+    actors.reduce((acc, { source, thread }) => {
+      let sourceThreads = acc[source];
+      if (!sourceThreads) {
+        sourceThreads = [];
+        acc[source] = sourceThreads;
+      }
+
+      sourceThreads.push(thread);
+      return acc;
+    }, {})
+);
+
+// Used by threads selectors
+export function getAllThreadsBySource(state) {
+  return queryThreadsBySourceObject(state.sourceActors);
+}
+
+export function getSourceActorBreakableLines(state, id) {
+  const { breakableLines } = getResource(state.sourceActors, id);
+
+  return asSettled(breakableLines);
+}
+
+export function getSourceActorBreakpointColumns(state, id, line) {
+  const { breakpointPositions } = getResource(state.sourceActors, id);
+
+  return asSettled(breakpointPositions.get(line) || null);
+}
+
+// Used by sources selectors
+export const getBreakableLinesForSourceActors = makeWeakQuery({
+  filter: (state, ids) => ids,
+  map: ({ breakableLines }) => breakableLines,
+  reduce: items =>
+    Array.from(
+      items.reduce((acc, item) => {
+        if (item && item.state === "fulfilled") {
+          acc = acc.concat(item.value);
+        }
+        return acc;
+      }, [])
+    ),
+});
diff --git a/devtools/client/debugger/src/selectors/sources.js b/devtools/client/debugger/src/selectors/sources.js
index 7d22bd6fef33..c08002f9e7f7 100644
--- a/devtools/client/debugger/src/selectors/sources.js
+++ b/devtools/client/debugger/src/selectors/sources.js
@@ -35,7 +35,7 @@ import {
   getSourceActors,
   getAllThreadsBySource,
   getBreakableLinesForSourceActors,
-} from "../reducers/source-actors";
+} from "../selectors/source-actors";
 import { getAllThreads } from "../selectors/threads";
 
 // This is used by tabs selectors