@tanstack/query-core/build/modern/mutationObserver.cjs

The framework agnostic core that powers TanStack Query

Object.defineProperty(exports, Symbol.toStringTag, { value: "Module" });
const require_utils = require("./utils.cjs");
const require_subscribable = require("./subscribable.cjs");
const require_notifyManager = require("./notifyManager.cjs");
const require_mutation = require("./mutation.cjs");
//#region src/mutationObserver.ts
var MutationObserver = class extends require_subscribable.Subscribable {
	#client;
	#currentResult = void 0;
	#currentMutation;
	#mutateOptions;
	constructor(client, options) {
		super();
		this.#client = client;
		this.setOptions(options);
		this.bindMethods();
		this.#updateResult();
	}
	bindMethods() {
		this.mutate = this.mutate.bind(this);
		this.reset = this.reset.bind(this);
	}
	setOptions(options) {
		const prevOptions = this.options;
		this.options = this.#client.defaultMutationOptions(options);
		if (!require_utils.shallowEqualObjects(this.options, prevOptions)) this.#client.getMutationCache().notify({
			type: "observerOptionsUpdated",
			mutation: this.#currentMutation,
			observer: this
		});
		if (prevOptions?.mutationKey && this.options.mutationKey && require_utils.hashKey(prevOptions.mutationKey) !== require_utils.hashKey(this.options.mutationKey)) this.reset();
		else if (this.#currentMutation?.state.status === "pending") this.#currentMutation.setOptions(this.options);
	}
	onSubscribe() {
		if (this.listeners.size === 1 && this.#currentMutation) {
			this.#currentMutation.addObserver(this);
			this.#updateResult();
		}
	}
	onUnsubscribe() {
		if (!this.hasListeners()) this.#currentMutation?.removeObserver(this);
	}
	onMutationUpdate(action) {
		this.#updateResult();
		this.#notify(action);
	}
	getCurrentResult() {
		return this.#currentResult;
	}
	reset() {
		this.#currentMutation?.removeObserver(this);
		this.#currentMutation = void 0;
		this.#updateResult();
		this.#notify();
	}
	mutate(variables, options) {
		this.#mutateOptions = options;
		this.#currentMutation?.removeObserver(this);
		this.#currentMutation = this.#client.getMutationCache().build(this.#client, this.options);
		this.#currentMutation.addObserver(this);
		return this.#currentMutation.execute(variables);
	}
	#updateResult() {
		const state = this.#currentMutation?.state ?? require_mutation.getDefaultState();
		this.#currentResult = {
			...state,
			isPending: state.status === "pending",
			isSuccess: state.status === "success",
			isError: state.status === "error",
			isIdle: state.status === "idle",
			mutate: this.mutate,
			reset: this.reset
		};
	}
	#notify(action) {
		require_notifyManager.notifyManager.batch(() => {
			if (this.#mutateOptions && this.hasListeners()) {
				const variables = this.#currentResult.variables;
				const onMutateResult = this.#currentResult.context;
				const context = {
					client: this.#client,
					meta: this.options.meta,
					mutationKey: this.options.mutationKey
				};
				if (action?.type === "success") {
					try {
						this.#mutateOptions.onSuccess?.(action.data, variables, onMutateResult, context);
					} catch (e) {
						Promise.reject(e);
					}
					try {
						this.#mutateOptions.onSettled?.(action.data, null, variables, onMutateResult, context);
					} catch (e) {
						Promise.reject(e);
					}
				} else if (action?.type === "error") {
					try {
						this.#mutateOptions.onError?.(action.error, variables, onMutateResult, context);
					} catch (e) {
						Promise.reject(e);
					}
					try {
						this.#mutateOptions.onSettled?.(void 0, action.error, variables, onMutateResult, context);
					} catch (e) {
						Promise.reject(e);
					}
				}
			}
			this.listeners.forEach((listener) => {
				listener(this.#currentResult);
			});
		});
	}
};
//#endregion
exports.MutationObserver = MutationObserver;

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