inversify
Version:
A powerful and lightweight inversion of control container for JavaScript and Node.js apps powered by TypeScript.
152 lines (151 loc) • 6.83 kB
JavaScript
;
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 __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.prototype.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());
});
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.resolveInstance = void 0;
const error_msgs_1 = require("../constants/error_msgs");
const literal_types_1 = require("../constants/literal_types");
const METADATA_KEY = __importStar(require("../constants/metadata_keys"));
const async_1 = require("../utils/async");
function _resolveRequests(childRequests, resolveRequest) {
return childRequests.reduce((resolvedRequests, childRequest) => {
const injection = resolveRequest(childRequest);
const targetType = childRequest.target.type;
if (targetType === literal_types_1.TargetTypeEnum.ConstructorArgument) {
resolvedRequests.constructorInjections.push(injection);
}
else {
resolvedRequests.propertyRequests.push(childRequest);
resolvedRequests.propertyInjections.push(injection);
}
if (!resolvedRequests.isAsync) {
resolvedRequests.isAsync = (0, async_1.isPromiseOrContainsPromise)(injection);
}
return resolvedRequests;
}, { constructorInjections: [], propertyInjections: [], propertyRequests: [], isAsync: false });
}
function _createInstance(constr, childRequests, resolveRequest) {
let result;
if (childRequests.length > 0) {
const resolved = _resolveRequests(childRequests, resolveRequest);
const createInstanceWithInjectionsArg = Object.assign(Object.assign({}, resolved), { constr });
if (resolved.isAsync) {
result = createInstanceWithInjectionsAsync(createInstanceWithInjectionsArg);
}
else {
result = createInstanceWithInjections(createInstanceWithInjectionsArg);
}
}
else {
result = new constr();
}
return result;
}
function createInstanceWithInjections(args) {
const instance = new args.constr(...args.constructorInjections);
args.propertyRequests.forEach((r, index) => {
const property = r.target.identifier;
const injection = args.propertyInjections[index];
if (!r.target.isOptional() || injection !== undefined) {
instance[property] = injection;
}
});
return instance;
}
function createInstanceWithInjectionsAsync(args) {
return __awaiter(this, void 0, void 0, function* () {
const constructorInjections = yield possiblyWaitInjections(args.constructorInjections);
const propertyInjections = yield possiblyWaitInjections(args.propertyInjections);
return createInstanceWithInjections(Object.assign(Object.assign({}, args), { constructorInjections, propertyInjections }));
});
}
function possiblyWaitInjections(possiblePromiseinjections) {
return __awaiter(this, void 0, void 0, function* () {
const injections = [];
for (const injection of possiblePromiseinjections) {
if (Array.isArray(injection)) {
injections.push(Promise.all(injection));
}
else {
injections.push(injection);
}
}
return Promise.all(injections);
});
}
function _getInstanceAfterPostConstruct(constr, result) {
const postConstructResult = _postConstruct(constr, result);
if ((0, async_1.isPromise)(postConstructResult)) {
return postConstructResult.then(() => result);
}
else {
return result;
}
}
function _postConstruct(constr, instance) {
var _a, _b;
if (Reflect.hasMetadata(METADATA_KEY.POST_CONSTRUCT, constr)) {
const data = Reflect.getMetadata(METADATA_KEY.POST_CONSTRUCT, constr);
try {
return (_b = (_a = instance)[data.value]) === null || _b === void 0 ? void 0 : _b.call(_a);
}
catch (e) {
if (e instanceof Error) {
throw new Error((0, error_msgs_1.POST_CONSTRUCT_ERROR)(constr.name, e.message));
}
}
}
}
function _validateInstanceResolution(binding, constr) {
if (binding.scope !== literal_types_1.BindingScopeEnum.Singleton) {
_throwIfHandlingDeactivation(binding, constr);
}
}
function _throwIfHandlingDeactivation(binding, constr) {
const scopeErrorMessage = `Class cannot be instantiated in ${binding.scope === literal_types_1.BindingScopeEnum.Request ?
'request' :
'transient'} scope.`;
if (typeof binding.onDeactivation === 'function') {
throw new Error((0, error_msgs_1.ON_DEACTIVATION_ERROR)(constr.name, scopeErrorMessage));
}
if (Reflect.hasMetadata(METADATA_KEY.PRE_DESTROY, constr)) {
throw new Error((0, error_msgs_1.PRE_DESTROY_ERROR)(constr.name, scopeErrorMessage));
}
}
function resolveInstance(binding, constr, childRequests, resolveRequest) {
_validateInstanceResolution(binding, constr);
const result = _createInstance(constr, childRequests, resolveRequest);
if ((0, async_1.isPromise)(result)) {
return result.then((resolvedResult) => _getInstanceAfterPostConstruct(constr, resolvedResult));
}
else {
return _getInstanceAfterPostConstruct(constr, result);
}
}
exports.resolveInstance = resolveInstance;