Create separate CrossSectionParameters definition

packages/schema/src/process/cross-section/cross-section.ts

@@ -5,16 +5,14 @@
 import { z, ZodType } from "zod";
 import { ProcessInfoBase } from "../process-info-base.js";
 import { CrossSectionData } from "./data-types.js";
+import { CrossSectionParameters } from "./parameters.js";
 
 export const CrossSectionInfo = <ReferenceType extends z.ZodTypeAny>(
   ReferenceType: ReferenceType,
 ) =>
   ProcessInfoBase("CrossSection", CrossSectionData, ReferenceType).merge(
     z.object({
-      parameters: z.object({
-        massRatio: z.number().positive().optional(),
-        statisticalWeightRatio: z.number().positive().optional(),
-      }).optional(),
+      parameters: CrossSectionParameters.optional(),
       // TODO: Should this be nonnegative, i.e. how do we treat reverse processes?
       threshold: z.number(),
     }),

packages/schema/src/process/cross-section/parameters.ts

@@ -0,0 +1,12 @@
+// SPDX-FileCopyrightText: LXCat team
+//
+// SPDX-License-Identifier: Apache-2.0
+
+import { number, object, TypeOf } from "zod";
+
+export const CrossSectionParameters = object({
+  massRatio: number().positive().optional(),
+  statisticalWeightRatio: number().positive().optional(),
+});
+
+export type CrossSectionParameters = TypeOf<typeof CrossSectionParameters>;

packages/schema/src/process/index.ts

@@ -3,6 +3,7 @@
 // SPDX-License-Identifier: Apache-2.0
 
 export { CrossSectionInfo } from "./cross-section/cross-section.js";
+export { CrossSectionParameters } from "./cross-section/parameters.js";
 export { EditedProcess } from "./edited-process.js";
 export { NewProcess } from "./new-process.js";
 export { ProcessInfo } from "./process-info.js";