如何使用Moment.js完全格式化持续时间?

鉴于UTC格式的两个日期，我想执行以下操作:

I would like to do the following, given two dates in UTC formatting:

var start = "2014-01-13T06:00:00.0000000Z";
var end = "2014-01-13T14:16:04.0000000Z";

我希望获得两次之间的确切时间跨度，例如

I would like to get the exact time span that passes between these two times, such as

8h 16m

我尝试使用以下内容:

var duration = moment(moment(end) - moment(start)).format('hh[h] mm[m]');

但是这几天都行不通.而且，它不能用几天，因为即使< 24小时过去了，它们也总是> = 1.

But this does not work with days. Moreover, it does not work with days, since they are always >=1 even if <24 hours pass.

我也尝试过 twix.js 来获取长度，但是其格式不支持创建上面指定的格式，或者我无法在其文档中找到这样做的方法.基本上，我正在寻找twix.humanizeLength()的精确版本.

I have also tried twix.js to get the length, but its formatting doesn't support creating the format specified above, or I could not find the way to do so in its documentation. Basically I am looking for an exact version of twix.humanizeLength().

Moment.js 的a.diff(b)仅提供总持续时间，它可以为我提供时间间隔的长度(以分钟，小时或天为单位)，但不能使用余数来计算.

Moment.js's a.diff(b) provides only total durations, it can give me the length of the time span in minutes, hours or days, but not calculated using remainders.

我的当前解决方案是使用diff创建范围，然后使用取模来计算余数，但这不是很好:

My current solution is to use diff to create the ranges and then use modulo to calculate remainders, but this is not very elegant:

var days = moment(end).diff(start, 'days');
var hours = moment(end).diff(start, 'hours') % 24;
var minutes = moment(end).diff(start, 'minutes') % 60;

var duration = ((days > 0) ? days + 'd ' : '') + ((hours > 0) ? hours + 'h ' : '') + ((minutes > 0) ? minutes + 'm ' : ''); 

问题:在 moment.js 或 twix.js 中，是否有更聪明的方法可以实现此目的?时间并开发我自己的moment.js插件?

The question: Is there any smarter way to do this in either moment.js or twix.js, or should I take my time and develop my own moment.js plugin?