@0x/utils
Version:
23 lines • 1.3 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.promisify = void 0;
var util_1 = require("util");
Object.defineProperty(exports, "promisify", { enumerable: true, get: function () { return util_1.promisify; } });
// /**
// * Transforms callback-based function -- func(arg1, arg2 .. argN, callback) -- into an ES6-compatible Promise.
// * Promisify provides a default callback of the form (error, result) and rejects when `error` is not null. You can also
// * supply thisArg object as the second argument which will be passed to `apply`.
// */
// // HACK: This can't be properly typed without variadic kinds https://github.com/Microsoft/TypeScript/issues/5453
// export function promisify<T>(originalFn: (...args: any[]) => void, thisArg?: any): (...callArgs: any[]) => Promise<T> {
// const promisifiedFunction = async (...callArgs: any[]): Promise<T> => {
// return new Promise<T>((resolve, reject) => {
// const callback = (err: Error | null, data?: T) => {
// err === null || err === undefined ? resolve(data) : reject(err);
// };
// originalFn.apply(thisArg, [...callArgs, callback]);
// });
// };
// return promisifiedFunction;
// }
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