Function tryConvertToPromise

src/web/util/bluebird.js:3452–3479

(obj, context)

var isObject = util.isObject;

function tryConvertToPromise(obj, context) {
    if (isObject(obj)) {
        if (obj instanceof Promise) {
            return obj;
        }
        else if (isAnyBluebirdPromise(obj)) {
            var ret = new Promise(INTERNAL);
            obj._then(
                ret._fulfillUnchecked,
                ret._rejectUncheckedCheckError,
                ret._progressUnchecked,
                ret,
                null
            );
            return ret;
        }
        var then = util.tryCatch(getThen)(obj);
        if (then === errorObj) {
            if (context) context._pushContext();
            var ret = Promise.reject(then.e);
            if (context) context._popContext();
            return ret;
        } else if (typeof then === "function") {
            return doThenable(obj, then, context);
        }
    }
    return obj;
}

function getThen(obj) {
    return obj.then;