Allow type augmentation

[CKGrafico]

This was the only way that I have found to allow Module Augmentation

example:

declare module 'vue-i18n/types/index' {
  // Declare augmentation for Vue-i18n
  interface IVueI18n {
    path: any;
  }
}

[codecov-io]

Codecov Report

Merging #273 into dev will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##              dev     #273   +/-   ##
=======================================
  Coverage   96.09%   96.09%           
=======================================
  Files           9        9           
  Lines         615      615           
=======================================
  Hits          591      591           
  Misses         24       24

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 51bfca3...11e5b72. Read the comment docs.

[kazupon]

please adjust the tab indint to 2 space. 🙏

[CKGrafico]

ouch!