Subpath exports have absolute paths

[mightyiam]

snabbdom/package.json

Lines 8 to 27 in b34e9a9

	"exports": {
	"./helpers/attachto": "/es/helpers/attachto.js",
	"./modules/attributes": "/es/modules/attributes.js",
	"./modules/class": "/es/modules/class.js",
	"./modules/dataset": "/es/modules/dataset.js",
	"./modules/eventlisteners": "/es/modules/eventlisteners.js",
	"./modules/hero": "/es/modules/hero.js",
	"./modules/module": "/es/modules/module.js",
	"./modules/props": "/es/modules/props.js",
	"./modules/style": "/es/modules/style.js",
	"./h": "/es/h.js",
	"./hooks": "/es/hooks.js",
	"./htmldomapi": "/es/htmldomapi.js",
	"./is": "/es/is.js",
	"./jsx": "/es/jsx.js",
	"./snabbdom": "/es/snabbdom.js",
	"./thunk": "/es/thunk.js",
	"./tovnode": "/es/tovnode.js",
	"./vnode": "/es/vnode.js"
	},

Seems that they should be relative:
https://nodejs.org/api/esm.html#esm_subpath_exports

[mightyiam]

> require('snabbdom/helpers/attachto')
Uncaught:
Error [ERR_INVALID_PACKAGE_TARGET]: Invalid "exports" target "/build/package/helpers/attachto.js" defined for './helpers/attachto' in the package config /home/shahar/temp/node_modules/snabbdom/package.json; targets must start with "./"