@formily/reactive/lib/observe.js

> Web Reactive Library Like Mobx

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.observe = void 0;
var environment_1 = require("./environment");
var externals_1 = require("./externals");
var checkers_1 = require("./checkers");
var tree_1 = require("./tree");
var observe = function (target, observer, deep) {
    if (deep === void 0) { deep = true; }
    var addListener = function (target) {
        var raw = (0, externals_1.raw)(target);
        var node = (0, tree_1.getDataNode)(raw);
        var listener = function (operation) {
            var targetRaw = (0, externals_1.raw)(operation.target);
            var targetNode = (0, tree_1.getDataNode)(targetRaw);
            if (deep) {
                if (node.contains(targetNode)) {
                    observer(new tree_1.DataChange(operation, targetNode));
                    return;
                }
            }
            if (node === targetNode ||
                (node.targetRaw === targetRaw && node.key === operation.key)) {
                observer(new tree_1.DataChange(operation, targetNode));
            }
        };
        if (node && (0, checkers_1.isFn)(observer)) {
            environment_1.ObserverListeners.add(listener);
        }
        return function () {
            environment_1.ObserverListeners.delete(listener);
        };
    };
    if (target && typeof target !== 'object')
        throw Error("Can not observe ".concat(typeof target, " type."));
    return addListener(target);
};
exports.observe = observe;
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