Feat/i18n

[baymac]

🤔 This is a ...

• New feature
• Bug fix
• Demo update
• Component style update
• TypeScript definition update
• Bundle size optimization
• Performance optimization
• Refactoring
• Code style optimization
• Test Case
• README update
• Other (about what?)

🔗 Related issue link

#1

💡 Background and solution

Problem statement

Add Internalization support

Problem Solving

1. Added a new localeState which has default value of en locale.
2. Added selector for a few state to derive their default state based on the localeState value.
3. Minor fix to Last Day of Month selection.
4. Added props to Scheduler component to allow custom locale values or reusing an predefined locale in the library.
5. Added docs

☑️ Self Check before Merge

⚠️ Please check all items below before review. ⚠️

• Demo in storybook is updated/provided or not needed
• TypeScript definition is updated/provided or not needed
• README API section is updated or not needed

[baymac]

@ShirasawaSama you might want to check this. Let me know if any improvements required.

[ShirasawaSama]

cronstrue can also set the language.

https://github.com/bradymholt/cronstrue#node-1

[ShirasawaSama]

I think the current design is good. Thank you.

But what do you think of the localization API based on material-ui?

https://github.com/mui-org/material-ui/blob/next/packages/material-ui/src/locale/index.ts#L3

[baymac]

@ShirasawaSama

1. Yes, I will integrate cronstrue localization as well but it will be limited to the set of languages we provide.

2. Are you saying that we export locale json and user can import and pass it? Is that it or something else you are trying to say? If that is just the case, I think this way is also fine. Do you think there is any major advantage with mui approach?

[ShirasawaSama]

@baymac If you don't think it's necessary, you don't need to change it.

[baymac]

@ShirasawaSama I have added locale support for construe, but it is not working for me. Do you have any idea why?

[ShirasawaSama]

@baymac src/components/CronReader.tsx

- import cronstrue from 'cronstrue'
+ import cronstrue from 'cronstrue/i18n'

[baymac]

@ShirasawaSama thanks. Do you think now this pr is ready to be merged?

[ShirasawaSama]

@baymac yes