woocommerce/plugins/woocommerce-blocks/assets/js/interactivity/store.js

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import { deepSignal } from 'deepsignal';
const isObject = ( item ) =>
item && typeof item === 'object' && ! Array.isArray( item );
export const deepMerge = ( target, source ) => {
if ( isObject( target ) && isObject( source ) ) {
for ( const key in source ) {
if ( isObject( source[ key ] ) ) {
if ( ! target[ key ] ) Object.assign( target, { [ key ]: {} } );
deepMerge( target[ key ], source[ key ] );
} else {
Object.assign( target, { [ key ]: source[ key ] } );
}
}
}
};
const getSerializedState = () => {
const storeTag = document.querySelector(
`script[type="application/json"]#wc-interactivity-store-data`
);
if ( ! storeTag ) return {};
try {
const { state } = JSON.parse( storeTag.textContent );
if ( isObject( state ) ) return state;
throw Error( 'Parsed state is not an object' );
} catch ( e ) {
// eslint-disable-next-line no-console
console.log( e );
}
return {};
};
const rawState = getSerializedState();
export const rawStore = { state: deepSignal( rawState ) };
if ( typeof window !== 'undefined' ) window.store = rawStore;
export const store = ( { state, ...block } ) => {
deepMerge( rawStore, block );
deepMerge( rawState, state );
};