The i18n types provided by @zyf722 are truly great. They did catch many errors I did while adding i18n strings in html or ts code.

However, I recently noticed that running the type check takes much longer than before.
When I disabled these types by replacing them with this:

// @ts-nocheck
export type RequireAtLeastOne<T> = any;
export type UnAsConst<T, U, Default> = any;
export type TagElement = any;
export type I18nInterpolationType<T> = any;
export type I18nKeyType = any;
export type I18nValueType<T, U> = any;

The time taken by type checking (npm run build:ts) decreased from 150 sec to 14 sec.

It would be great if we can improve the performance here without losing the big value provided by these types.