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, 94 insertions, 0 deletions

diff --git a/source/library/state/history.svelte.ts b/source/library/state/history.svelte.ts
new file mode 100644
index 0000000..2726283
--- /dev/null
+++ b/source/library/state/history.svelte.ts
@@ -0,0 +1,94 @@
+
+
+
+/*** UTILITY ------------------------------------------ ***/
+
+import { evict } from "./history-logic.ts";
+import type { Storage } from "./storage.ts";
+
+const MAX_ENTRIES = 100;
+const STORAGE_KEY = "history";
+
+/*** EXPORT ------------------------------------------- ***/
+
+export type HistoryEntry = {
+  favorite: boolean;
+  headers: string;
+  id: string;
+  operationName: string | null;
+  query: string;
+  timestamp: number;
+  title: string;
+  variables: string;
+};
+
+export type HistoryInput = {
+  headers: string;
+  operationName: string | null;
+  query: string;
+  title: string;
+  variables: string;
+};
+
+export class HistoryStore {
+  entries = $state<HistoryEntry[]>([]);
+
+  #storage: Storage;
+
+  constructor(storage: Storage) {
+    this.#storage = storage;
+
+    const restored = storage.get<HistoryEntry[]>(STORAGE_KEY);
+
+    if (Array.isArray(restored))
+      this.entries = restored.map((e) => ({
+        favorite: Boolean(e.favorite),
+        headers: e.headers ?? "{}",
+        id: e.id,
+        operationName: e.operationName ?? null,
+        query: e.query ?? "",
+        timestamp: e.timestamp ?? Date.now(),
+        title: e.title ?? "untitled",
+        variables: e.variables ?? "{}"
+      }));
+  }
+
+  add(input: HistoryInput) {
+    const entry: HistoryEntry = {
+      favorite: false,
+      headers: input.headers,
+      id: crypto.randomUUID(),
+      operationName: input.operationName,
+      query: input.query,
+      timestamp: Date.now(),
+      title: input.title,
+      variables: input.variables
+    };
+
+    this.entries = [entry, ...this.entries];
+    this.#evict();
+  }
+
+  clear() {
+    this.entries = this.entries.filter((e) => e.favorite);
+  }
+
+  favorite(id: string) {
+    const entry = this.entries.find((e) => e.id === id);
+
+    if (entry)
+      entry.favorite = !entry.favorite;
+  }
+
+  persist() {
+    this.#storage.set<HistoryEntry[]>(STORAGE_KEY, this.entries);
+  }
+
+  remove(id: string) {
+    this.entries = this.entries.filter((e) => e.id !== id);
+  }
+
+  #evict() {
+    this.entries = evict(this.entries, MAX_ENTRIES);
+  }
+}