reactiveMap()

Creates a reactive key-value store with point reads, reactive selects, and optional TTL.

Signature

function reactiveMap<V>(opts?: ReactiveMapOptions<V>): ReactiveMap<V>

Parameters

Parameter	Type	Description
opts	ReactiveMapOptions<V>	Optional configuration.

Returns

ReactiveMap<V> — key-value operations, reactive views, events, and lifecycle controls.

Basic Usage

import { reactiveMap } from "callbag-recharge/data";

const users = reactiveMap<{ name: string }>();
users.set("u1", { name: "Ada" });
users.get("u1"); // { name: "Ada" }

Options / Behavior Details

• Single source of truth: Internal Map is authoritative; reactive stores mirror map state.
• Reactive views: select(key), keysStore, and sizeStore update through graph propagation.
• TTL + eviction: Supports per-key/default TTL and optional bounded-size eviction policies.

Examples

Reactive key subscription

const users = reactiveMap<number>();
const score = users.select("u1");

users.set("u1", 10);
score.get(); // 10

See Also

• reactiveIndex
• reactiveLog
• compaction