feat: publish av-tools 0.1.0

src/jobs/object-url-registry.ts

@@ -0,0 +1,45 @@
+export interface ObjectUrlApi {
+  createObjectURL(blob: Blob): string;
+  revokeObjectURL(url: string): void;
+}
+
+export class ObjectUrlRegistry {
+  readonly #api: ObjectUrlApi;
+  readonly #urls = new Map<string, string>();
+
+  constructor(api: ObjectUrlApi = URL) {
+    this.#api = api;
+  }
+
+  replace(key: string, blob: Blob): string {
+    this.revoke(key);
+    const url = this.#api.createObjectURL(blob);
+    this.#urls.set(key, url);
+    return url;
+  }
+
+  get(key: string): string | undefined {
+    return this.#urls.get(key);
+  }
+
+  revoke(key: string): boolean {
+    const url = this.#urls.get(key);
+    if (!url) {
+      return false;
+    }
+    this.#api.revokeObjectURL(url);
+    this.#urls.delete(key);
+    return true;
+  }
+
+  clear(): void {
+    for (const url of this.#urls.values()) {
+      this.#api.revokeObjectURL(url);
+    }
+    this.#urls.clear();
+  }
+
+  get size(): number {
+    return this.#urls.size;
+  }
+}