factor out internal identityFn to utils (#431)

xaviergonz · Mar 11, 2022 · 0bc6a0d · 0bc6a0d
1 parent a7bd0c2
commit 0bc6a0d
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Showing 4 changed files with 9 additions and 9 deletions.
diff --git a/packages/lib/src/snapshot/getSnapshot.ts b/packages/lib/src/snapshot/getSnapshot.ts
@@ -1,16 +1,14 @@
 import { assertTweakedObject } from "../tweaker/core"
 import { resolveTypeChecker } from "../types/resolveTypeChecker"
 import { AnyType, TypeToData } from "../types/schemas"
-import { failure, isPrimitive } from "../utils"
+import { failure, identityFn, isPrimitive } from "../utils"
 import {
   freezeInternalSnapshot,
   getInternalSnapshot,
   reportInternalSnapshotObserved,
 } from "./internal"
 import type { SnapshotOutOf } from "./SnapshotOf"
 
-const identityFn = (x: any) => x
-
 /**
  * Retrieves an immutable snapshot for a data structure.
  * Since returned snapshots are immutable they will respect shallow equality, this is,
@@ -37,7 +35,7 @@ export function getSnapshot<T extends AnyType>(
 export function getSnapshot<T>(nodeOrPrimitive: T): SnapshotOutOf<T>
 
 export function getSnapshot(arg1: any, arg2?: any): any {
-  let toSnapshotProcessor = identityFn
+  let toSnapshotProcessor = identityFn as (sn: any) => unknown
   let nodeOrPrimitive: any
 
   if (arguments.length >= 2) {

diff --git a/packages/lib/src/types/primitiveBased/primitives.ts b/packages/lib/src/types/primitiveBased/primitives.ts
@@ -1,12 +1,10 @@
-import { assertIsPrimitive } from "../../utils"
+import { assertIsPrimitive, identityFn } from "../../utils"
 import type { PrimitiveValue } from "../../utils/types"
 import { registerStandardTypeResolver } from "../resolveTypeChecker"
 import type { AnyStandardType, IdentityType } from "../schemas"
 import { TypeChecker, TypeCheckerBaseType, TypeInfo, TypeInfoGen } from "../TypeChecker"
 import { TypeCheckError } from "../TypeCheckError"
 
-const identityFn = <T>(x: T): T => x
-
 /**
  * A type that represents a certain value of a primitive (for example an *exact* number or string).
  *

diff --git a/packages/lib/src/types/utility/unchecked.ts b/packages/lib/src/types/utility/unchecked.ts
@@ -1,8 +1,7 @@
+import { identityFn } from "../../utils"
 import type { IdentityType } from "../schemas"
 import { TypeChecker, TypeCheckerBaseType, TypeInfo } from "../TypeChecker"
 
-const identityFn = (x: any) => x
-
 const unchecked: IdentityType<any> = new TypeChecker(
   TypeCheckerBaseType.Any,
   null,

diff --git a/packages/lib/src/utils/index.ts b/packages/lib/src/utils/index.ts
@@ -373,6 +373,11 @@ export function lazy<A extends unknown[], R>(getter: (...args: A) => R): typeof
   }
 }
 
+/**
+ * @internal
+ */
+export const identityFn = <T>(x: T): T => x
+
 /**
  * @internal
  */