@yoyo-org/progressive-json
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Stream and render JSON data as it arrives - perfect for AI responses, large datasets, and real-time updates
37 lines (36 loc) • 1.07 kB
JavaScript
/**
* Server-side message creator for merge plugin
*/
export function merge(key, value) {
return { type: "merge", key, value };
}
/**
* Merge Plugin
*
* Handles "merge" message type that merges the current placeholder value with a new object.
*
* Example server usage:
* ```ts
* writer(merge(userRef, { email: "alice@example.com", verified: true }));
* ```
*
* This will merge the new properties with the existing user object.
*/
export const mergePlugin = {
type: "merge",
handleMessage: (message, store, context) => {
// message is guaranteed to be a merge message
return context.updateAtPath(store, message.key, (obj, lastKey) => {
const currentValue = obj[lastKey];
if (typeof currentValue === "object" && currentValue !== null && !Array.isArray(currentValue)) {
obj[lastKey] = {
...currentValue,
...message.value,
};
}
else {
obj[lastKey] = message.value;
}
});
},
};