async/internal/wrapAsync.js

'use strict';

Object.defineProperty(exports, "__esModule", {
    value: true
});
exports.isAsyncIterable = exports.isAsyncGenerator = exports.isAsync = undefined;

var _asyncify = require('../asyncify.js');

var _asyncify2 = _interopRequireDefault(_asyncify);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function isAsync(fn) {
    return fn[Symbol.toStringTag] === 'AsyncFunction';
}

function isAsyncGenerator(fn) {
    return fn[Symbol.toStringTag] === 'AsyncGenerator';
}

function isAsyncIterable(obj) {
    return typeof obj[Symbol.asyncIterator] === 'function';
}

function wrapAsync(asyncFn) {
    if (typeof asyncFn !== 'function') throw new Error('expected a function');
    return isAsync(asyncFn) ? (0, _asyncify2.default)(asyncFn) : asyncFn;
}

exports.default = wrapAsync;
exports.isAsync = isAsync;
exports.isAsyncGenerator = isAsyncGenerator;
exports.isAsyncIterable = isAsyncIterable;