Versioned Storage Plugin

Build a storage versioning plugin that tracks versions of stored values and allows retrieval of previous versions.

Capabilities

Version Tracking

The plugin should automatically track versions each time a value is updated. When a key is set, the plugin should preserve the previous value along with metadata about when it was stored.

Version Retrieval

The plugin should allow retrieval of previous versions of a stored key, including the ability to get the most recent version or a specific historical version by index.

Version Listing

The plugin should provide a way to see all stored versions for a given key, including metadata about each version.

Test Cases

• Setting "user" to "Alice", then "Bob", then "Charlie" creates three versions in history @test
• Calling getVersion("user", 0) returns "Alice", getVersion("user", 1) returns "Bob" @test
• listVersions("user") returns an array with three entries, each containing the value and timestamp @test
• Setting a key that doesn't exist yet creates the first version @test

Implementation

@generates

API

// Plugin function that returns an object with extended methods
function versionedStoragePlugin() {
  return {
    set: function(super_fn, key, value) { /* ... */ },
    getVersion: function(key, versionIndex) { /* ... */ },
    listVersions: function(key) { /* ... */ }
  };
}

export default versionedStoragePlugin;

Dependencies { .dependencies }

store { .dependency }

Provides cross-browser local storage with plugin architecture.

@satisfied-by