WXS used in template will lose when referenced by other file

[SgLy]

test case to reproduce:

const def = glassEasel
  .registerElement({
    template: multiTmpl({
      child: `
        <wxs name="w">module.exports = { fn: function () { return 1 } }</wxs>
        <template name="child">
          <span>{{ w.fn() }}</span>
        </template>
      `,
      '': `
        <import src="./child" />
        <div>
          <template is="child" />
        </div>
      `,
    }),
  })
  .general()
const elem = glassEasel.Component.create('root', def)