vue-storage-decorator

Give a Persist decorator to persist vue object properties to some storage

Allows to create a decorator @Persist() to decorate Vue class members so that their value is loaded from a storage and persisted there when it changes

Yet another package

This one has been done for the members to be loaded at data() gathering moment (not on create()). Also, it allows to persist all the data in one and only one variable of the storage.

Install

npm i -S vue-storage-decorator

Usage

import Persistance from 'vue-storage-decorator'
const Persist = Persistance("myKey");

@Component()
class myApp extends Vue {
    @Persist() myProp = 0
    @Persist() yesNo = true
}

First a decorator (here called Persist) is created with the function Persistance(key: string, storage?: any). The key is the key used in the persistance object. The persistance object can be any like localStorage, sessionStorage, or even an object you create and manage by yourself : it can either implement setItem and/or getItem or just be a plain object. If none is specified, localStorage is used

This created decorator is then used. It can take an argument : the watch option to use on the variable (default: {deep: true}). The decorated members have to have an initial value. This one will be overriden by the persisted value if something was persisted.

After the first run of the component here, the localStorage will contain myKey-> {"myProp": 0, "yesNo": true}.

Disableing persistance in some cases

It can happen - when you control appears in a main window and a popup for ex. - that the control should in some case stop persisting its changes.

In order to do that, the created Persistance has a member persisting: boolean that can be changed at any time. Also, in order to force the persistance - for ex. when setting persisting back to true - it has the function persist.

Persist.persisting = false;
....
Persist.persisting = true;
Persist.persist();

TODO

• rollup generates index.d.ts in the root folder when "declaration": true,
• npm run build raises errors while rollup -c does not