gdpr-guard-local

A simple local storage adapter for gdpr-guard

This library predefines logic to store/save and restore gdpr-guard state from localStorage.

If you need any help, you're more than welcome on my official Discord server dedicated to my open-source projects.

You can read the online documentation.

How to import

This library re-exports what's exported by gdpr-guard.

import {
    // everything from gdpr-guard
    defaults,
    LocalStorageSavior,
} from "gdpr-guard-local"


// In your browser
const {
	// everything from gdpr-guard
	defaults,
	LocalStorageSavior,
} = gdprGuardLocal;

LocalStorageSavior

LocalStorageSavior is a class that specializes the Savior API for local storage.

It is mainly for libraries developers or can be used as parameters for a library.

To construct one, simply pass a LocalStorageConfig object followed by a LocalStoreFactory (both are optional with default values):

interface LocalStorageConfig{
    storeKey: string; // key of the serialized manager in local storage
    versionKey: string; // key of the version of the serialized manager in local storage
    version: string|number; // current version
    comparator: (oldVersion, newVersion) => boolean; // if the versions are different
    expiration: () => Date; // expiration date from current time
}

type LocalStoreFactory = () => LocalStore;

interface LocalStore{
    has(key: string): Promise<boolean>;
    set(key: string, value: any, expiration: Date): Promise<void>;
    remove(key: string): Promise<void>;
    get(key: string): Promise<any>;
    removeExpiredKeys(): Promise<void>;
}

const savior = new LocalStorageSavior(myConfig, myStoreFactory);

To help users and developers, we provide default values as well as ways to easily create new values for the parameters.

Defaults

const {
    defaultStoreFactory, // the default argument of the savior constructor
    expiration, // utility function
    defaultConfig, // the default argument of the savior
    makeConfig,
} = defaults;

The makeConfig function is a utility function that merges the user provided config object with the default config:

declare const makeConfig: (config: Partial<LocalStorageConfig> = {}): LocalStorageConfig;

For instance, you can customize the savior like this:

const savior = new LocalStorageSavior(
    makeConfig({
        version: "v1.0.0",
        //storeKey will be gdpr
        //versionKey will be gdpr__version
    }),
    defaultStoreFactory, // optional, that's already the default parameter
);