[nit] Move isColorable out of interfaces.ts (#564)

src/interfaces.ts

@@ -83,13 +83,6 @@ export interface IColorable {
   getColorOption(): ColorOption | null
 }
 
-/**
- * Checks if an object is an instance of {@link IColorable}.
- */
-export const isColorable = (obj: unknown): obj is IColorable => {
-  return typeof obj === "object" && obj !== null && "setColorOption" in obj && "getColorOption" in obj
-}
-
 /**
  * An object that can be pinned.
  *

src/litegraph.ts

@@ -22,7 +22,7 @@ import type {
   ColorOption,
   IColorable,
 } from "./interfaces"
-import { isColorable } from "./interfaces"
+import { isColorable } from "./typeGuards"
 import type { SlotShape, LabelPosition, SlotDirection, SlotType } from "./draw"
 import type { IWidget } from "./types/widgets"
 import type { RenderShape, TitleMode } from "./types/globalEnums"

src/typeGuards.ts

@@ -0,0 +1,8 @@
+import { IColorable } from "@/interfaces"
+
+/**
+ * Checks if an object is an instance of {@link IColorable}.
+ */
+export const isColorable = (obj: unknown): obj is IColorable => {
+  return typeof obj === "object" && obj !== null && "setColorOption" in obj && "getColorOption" in obj
+}