computed-async-mobx
Version:
Define a computed by returning a Promise
201 lines • 9.36 kB
JavaScript
;
var __extends = (this && this.__extends) || (function () {
var extendStatics = function (d, b) {
extendStatics = Object.setPrototypeOf ||
({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
return extendStatics(d, b);
};
return function (d, b) {
extendStatics(d, b);
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
})();
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
Object.defineProperty(exports, "__esModule", { value: true });
var React = __importStar(require("react"));
var ReactDOM = __importStar(require("react-dom"));
var index_1 = require("../src/index");
var delay_1 = require("../test/delay");
var mobx_1 = require("mobx");
var mobx_react_1 = require("mobx-react");
var SlowCalculator = /** @class */ (function (_super) {
__extends(SlowCalculator, _super);
function SlowCalculator() {
var _this = _super !== null && _super.apply(this, arguments) || this;
_this.x = "0";
_this.y = "0";
_this.answer = index_1.computedAsync({
init: 0,
delay: 1000,
fetch: function () { return __awaiter(_this, void 0, void 0, function () {
var r;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
console.log("starting fetch with " + this.x + " + " + this.y);
r = parseFloat(this.x) + parseFloat(this.y);
return [4 /*yield*/, delay_1.delay(1000)];
case 1:
_a.sent();
console.log("fetch returning " + r);
return [2 /*return*/, r];
}
});
}); }
});
return _this;
}
SlowCalculator.prototype.render = function () {
var _this = this;
return (React.createElement("div", null,
React.createElement("input", { value: this.x, onChange: function (e) { return _this.x = e.target.value; } }),
" +",
React.createElement("input", { value: this.y, onChange: function (e) { return _this.y = e.target.value; } }),
" =",
this.answer.value,
this.answer.busy ? React.createElement("div", null, "busy...") : undefined));
};
__decorate([
mobx_1.observable
], SlowCalculator.prototype, "x", void 0);
__decorate([
mobx_1.observable
], SlowCalculator.prototype, "y", void 0);
SlowCalculator = __decorate([
mobx_react_1.observer
], SlowCalculator);
return SlowCalculator;
}(React.Component));
function timeConsumingOperation() {
return __awaiter(this, void 0, void 0, function () {
var i;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
i = 0;
_a.label = 1;
case 1:
if (!(i < 5)) return [3 /*break*/, 4];
return [4 /*yield*/, delay_1.delay(500)];
case 2:
_a.sent();
console.log("Waiting (" + i + ")...");
_a.label = 3;
case 3:
i++;
return [3 /*break*/, 1];
case 4: return [2 /*return*/];
}
});
});
}
var InitiallyBusy = /** @class */ (function (_super) {
__extends(InitiallyBusy, _super);
function InitiallyBusy() {
var _this = _super !== null && _super.apply(this, arguments) || this;
_this.observableValue = index_1.computedAsync({
init: 'Initial dummy value',
fetch: function () { return __awaiter(_this, void 0, void 0, function () {
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, timeConsumingOperation()];
case 1:
_a.sent();
return [2 /*return*/, 'Computed value'];
}
});
}); },
});
return _this;
}
InitiallyBusy.prototype.render = function () {
var _a = this.observableValue, value = _a.value, busy = _a.busy;
console.log('render()', { value: value, busy: busy });
return (React.createElement("ul", null,
React.createElement("li", null,
"value: ",
value),
React.createElement("li", null,
"busy: ",
JSON.stringify(busy))));
};
InitiallyBusy = __decorate([
mobx_react_1.observer
], InitiallyBusy);
return InitiallyBusy;
}(React.Component));
function App(_) {
return (React.createElement("div", null,
React.createElement("div", null,
" ",
React.createElement(SlowCalculator, null),
" "),
React.createElement("div", null,
" ",
React.createElement(InitiallyBusy, null),
" ")));
}
ReactDOM.render(React.createElement(App, null), document.body.appendChild(document.createElement('div')));
//# sourceMappingURL=index.js.map