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/**
* LocalStorage polyfill from https://gist.github.com/juliocesar/926500
* length and key methods were added to allow for implementing removeExpiredExperimentAssignments
* Exported only for testing purposes
*/
export const polyfilledLocalStorage: Storage = {
_data: {} as Record< string, string >,
setItem: function ( id: string, val: string ): void {
this._data[ id ] = val;
},
getItem: function ( id: string ): string | null {
return this._data.hasOwnProperty( id ) ? this._data[ id ] : null;
},
removeItem: function ( id: string ): void {
delete this._data[ id ];
},
clear: function (): void {
this._data = {};
},
get length(): number {
return Object.keys( this._data ).length;
},
key: function ( index: number ): string | null {
const keys = Object.keys( this._data );
return index in keys ? keys[ index ] : null;
},
};
/**
* A polyfilled LocalStorage.
* The polyfill is required at least for testing.
*/
let localStorage = polyfilledLocalStorage;
try {
if ( window.localStorage ) {
localStorage = window.localStorage;
}
} catch ( e ) {}
export default localStorage;
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