Add creationStack, created when createSelector was first called

src/createSelectorCreator.ts

@@ -325,6 +325,14 @@ export function createSelectorCreator<
       >
     ]
   ) => {
+    let creationStack: string | undefined = undefined
+    if (process.env.NODE_ENV !== 'production') {
+      try {
+        throw new Error()
+      } catch (error) {
+        creationStack = (error as Error).stack
+      }
+    }
     let recomputations = 0
     let dependencyRecomputations = 0
     let lastResult: Result
@@ -418,7 +426,8 @@ export function createSelectorCreator<
           identityFunctionCheck.run(
             resultFunc as Combiner<InputSelectors, Result>,
             inputSelectorResults,
-            lastResult
+            lastResult,
+            creationStack
           )
         }
 
@@ -432,7 +441,8 @@ export function createSelectorCreator<
           inputStabilityCheck.run(
             { inputSelectorResults, inputSelectorResultsCopy },
             { memoize, memoizeOptions: finalMemoizeOptions },
-            arguments
+            arguments,
+            creationStack
           )
         }
 

src/devModeChecks/identityFunctionCheck.ts

@@ -20,7 +20,8 @@ import type { AnyFunction } from '../types'
 export const runIdentityFunctionCheck = (
   resultFunc: AnyFunction,
   inputSelectorsResults: unknown[],
-  outputSelectorResult: unknown
+  outputSelectorResult: unknown,
+  creationStack: string | undefined
 ) => {
   if (
     inputSelectorsResults.length === 1 &&
@@ -46,7 +47,7 @@ export const runIdentityFunctionCheck = (
           '\n`createSelector([state => state.todos], todos => todos)`' +
           '\nThis could lead to inefficient memoization and unnecessary re-renders.' +
           '\nEnsure transformation logic is in the result function, and extraction logic is in the input selectors.',
-        { stack }
+        { stack, creationStack }
       )
     }
   }

src/devModeChecks/inputStabilityCheck.ts

@@ -25,7 +25,8 @@ export const runInputStabilityCheck = (
       'memoize' | 'memoizeOptions'
     >
   >,
-  inputSelectorArgs: unknown[] | IArguments
+  inputSelectorArgs: unknown[] | IArguments,
+  creationStack: string | undefined
 ) => {
   const { memoize, memoizeOptions } = options
   const { inputSelectorResults, inputSelectorResultsCopy } =
@@ -52,7 +53,8 @@ export const runInputStabilityCheck = (
         arguments: inputSelectorArgs,
         firstInputs: inputSelectorResults,
         secondInputs: inputSelectorResultsCopy,
-        stack
+        stack,
+        creationStack
       }
     )
   }

test/identityFunctionCheck.test.ts

@@ -51,7 +51,8 @@ describe('identityFunctionCheck', () => {
         'The result function returned its own inputs without modification'
       ),
       {
-        stack: expect.any(String)
+        stack: expect.any(String),
+        creationStack: expect.any(String)
       }
     )
   })

test/inputStabilityCheck.spec.ts

@@ -42,7 +42,8 @@ describe('inputStabilityCheck', () => {
         secondInputs: expect.arrayContaining([
           expect.objectContaining({ a: 1, b: 2 })
         ]),
-        stack: expect.any(String)
+        stack: expect.any(String),
+        creationStack: expect.any(String)
       })
     )
   })