Initial commit: @eol/graphiql v0.3

Svelte 5 GraphiQL alternative for JSR. Covers:
- HTTP fetcher with injectable fetch; SSE/WS stubs
- Session store with tabs, auto-titling, persistence, rename
- Operation detection via graphql parse(); Toolbar picker
- CodeMirror 6 editor via cm6-graphql with theme prop
- Light theme preset (hand-rolled EditorView.theme)
- Doc explorer with breadcrumb nav and type guards
- History panel with 100-entry cap, favorite pinning
- Deno tests for operations, storage, and history eviction

1 files changed, 41 insertions, 0 deletions

diff --git a/source/library/state/schema.svelte.ts b/source/library/state/schema.svelte.ts
new file mode 100644
index 0000000..c5f148f
--- /dev/null
+++ b/source/library/state/schema.svelte.ts
@@ -0,0 +1,41 @@
+
+
+
+/*** IMPORT ------------------------------------------- ***/
+
+import {
+  buildClientSchema,
+  getIntrospectionQuery,
+  printSchema,
+  type GraphQLSchema,
+  type IntrospectionQuery
+} from "graphql";
+
+/*** UTILITY ------------------------------------------ ***/
+
+import type { Fetcher } from "../fetcher/types.ts";
+
+/*** EXPORT ------------------------------------------- ***/
+
+export class SchemaStore {
+  error = $state<string | null>(null);
+  loading = $state(false);
+  schema = $state<GraphQLSchema | null>(null);
+  sdl = $state<string>("");
+
+  async introspect(fetcher: Fetcher) {
+    this.loading = true;
+    this.error = null;
+
+    try {
+      const result = await fetcher({ query: getIntrospectionQuery() });
+      const data = (result as { data: IntrospectionQuery }).data;
+      this.schema = buildClientSchema(data);
+      this.sdl = printSchema(this.schema);
+    } catch(err) {
+      this.error = String(err);
+    } finally {
+      this.loading = false;
+    }
+  }
+}