typedux
Version:
Slightly adjusted Redux (awesome by default) for TS
47 lines • 1.69 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.selectorChain = void 0;
const guard_1 = require("@3fv/guard");
function continueSelectorChain(store, state, data, keyPath = []) {
keyPath = keyPath || [];
// noinspection DuplicatedCode
const nextSelector = (() => {
// TRACK FIRST PROP ACCESS
const firstGet = keyPath.map(() => true);
// CHECK IF KEY SHOULD BE NUMBER
function resolveKey(value, key, index) {
if (firstGet[index]) {
if (Array.isArray(value)) {
const keyNum = guard_1.toNumber(key);
if (guard_1.isNumber(keyNum)) {
key = keyPath[index] = keyNum;
}
}
firstGet[index] = false;
}
return key;
}
function getterFn(state) {
return keyPath.reduce((value, key, index) => {
return value[resolveKey(value, key, index)];
}, state);
}
const getter = Object.assign(getterFn, {
subscribe(listener) {
return store.observe(getterFn, listener);
}
});
return getter; // overrideCallback(getter, keyPath)
});
return (new Proxy(nextSelector, {
get: (target, key) => {
return continueSelectorChain(store, state, undefined, [...keyPath, key]);
}
}));
}
//PropChainType<S, S,SelectorChainDataAccessor<S,S>>
function selectorChain(store, state) {
return continueSelectorChain(store, state, state);
}
exports.selectorChain = selectorChain;
//# sourceMappingURL=SelectorChain.js.map