pathname can only be string

[vastwu]

koa-better-serve/src/index.js

Line 26 in 9334ee3

* @param {String|RegExp} pathname path to match, can be regex

koa-better-serve/src/index.js

Lines 46 to 48 in 9334ee3

	if (kindOf(pathname) !== 'string') {
	throw new TypeError('koa-better-serve: expect `pathname` to be string')
	}

koa-better-serve/src/index.js

Line 51 in 9334ee3

const filepath = ctx.path.replace(pathname, '')

i think the code only support pathname which to be a String