improve Json types, adding Json_Primitive, Json_Object, and `Js…

…on_Array`

.changeset/two-meals-build.md

@@ -0,0 +1,5 @@
+---
+'@ryanatkn/belt': patch
+---
+
+improve `Json` types, adding `Json_Primitive`, `Json_Object`, and `Json_Array`

src/lib/json.ts

@@ -1,6 +1,12 @@
 import {is_plain_object} from '$lib/object.js';
 
-export type Json = string | number | boolean | null | {[prop: string]: Json} | Json[];
+export type Json = Json_Primitive | Json_Object | Json_Array;
+
+export type Json_Primitive = string | number | boolean | null;
+
+export interface Json_Object extends Record<string, Json> {} // eslint-disable-line @typescript-eslint/no-empty-object-type
+
+export interface Json_Array extends Array<Json> {} // eslint-disable-line @typescript-eslint/no-empty-object-type
 
 /**
  * Like `typeof json`, but includes arrays. Excludes `'undefined'` because it's not valid JSON.

src/routes/package.ts

@@ -215,6 +215,9 @@ export const src_json = {
 			path: 'json.ts',
 			declarations: [
 				{name: 'Json', kind: 'type'},
+				{name: 'Json_Primitive', kind: 'type'},
+				{name: 'Json_Object', kind: 'type'},
+				{name: 'Json_Array', kind: 'type'},
 				{name: 'Json_Type', kind: 'type'},
 				{name: 'to_json_type', kind: 'function'},
 				{name: 'canonicalize', kind: 'function'},