[core] Export TypographyVariant type

[aleccaputo]

for feature #19572

• export useful TS types for typography which were hard to discover
• Remove unused code

• I have followed (at least) the PR section of the contributing guide.

Closes #19572

[mui-pr-bot]

No bundle size changes comparing 01b8b09...1ed5965

Generated by 🚫 dangerJS against 1ed5965

[oliviertassinari]

Form how I understood it, the idea what to expose more variables from createMuiTheme, for instance, the ones we import deep in https://material-ui.com/guides/typescript/? I don't understand why the types of the Typography component needs to be changed.

[eps1lon]

Thanks for working on this but this is not what we discussed in #19572. It was specifically about createTypography and generally about key types that can't be extracted.

[eps1lon]

We don't need this as explained in #19572 (comment)

[aleccaputo]

Gotcha, will do

[aleccaputo]

@eps1lon fixed

[aleccaputo]

Form how I understood it, the idea what to expose more variables from createMuiTheme, for instance, the ones we import deep in https://material-ui.com/guides/typescript/? I don't understand why the types of the Typography component needs to be changed.

@oliviertassinari Ah i defiantly misunderstood that, but can do that if you would like. Would you want me to just import/export them straight from index.d.ts?

[eps1lon]

We were discussing Variant in createTypography not Typography. I can see no issue with Typography. Please stick to the things we discussed in the issue.

[oliviertassinari]

@aleccaputo Did you have the time to look at the issue? :)

[aleccaputo]

@oliviertassinari @eps1lon how's that look?

[eps1lon]

Perfect, thanks!

[oliviertassinari]

@aleccaputo Thank you for the cooperation!