@namchee/decora/build/esm/src/timeout.js

Useful ECMAScript-compliant decorators to enhance JS (specifically, TypeScript) development experience

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());
    });
};
const timeoutSymbol = Symbol('timeout');
export function timeout(time, metric = 'ms') {
    return function (target, keyName, descriptor) {
        if (!descriptor || !(descriptor.value instanceof Function)) {
            throw new Error('@timeout decorator can only be applied to functions');
        }
        const fn = descriptor.value;
        if (metric !== 'ms') {
            time = metric === 's' ?
                time / 1000 :
                time * 1000;
        }
        descriptor.value = function (...args) {
            return __awaiter(this, void 0, void 0, function* () {
                const timeoutFn = Promise.resolve(setTimeout(() => timeoutSymbol, time));
                const result = yield Promise.race([
                    fn.apply(this, args),
                    timeoutFn,
                ]);
                if (typeof result === 'symbol' && result === timeoutSymbol) {
                    throw new Error(`Function ${keyName} from class ${target.constructor.name} exceeds time limit of ${time} ms`);
                }
                return result;
            });
        };
    };
}