provide api to augment the formatters global structure about intl-messageformat HOT 8 CLOSED

What's the proposed signature, and what happens when one already exists?

Do MessageFormat instances get their own copy of the class-level formatters? Or would adding a formatter the class potentially change the output of an existing instances format() method?

from intl-messageformat.

• instances will have an empty object or whatever custom formatters were passed as 3rd argument with a __proto__ to global formatters.
• if you set an instance formatter, or add a global formatter using __addFormatter, it will overrule whatever we have in there.
• yes, adding new global formatters will affect all existing instances since they use __proto__ chain to lookup for global formatters if a local one does not exists.

from intl-messageformat.

Cool, sounds good!

from intl-messageformat.

Should there be a consideration for this in the final Intl.MessageFormat implementation. Meaning, since the intention of this is a polyfill, this should mimic the end use case of the final Intl.MessageFormat. I like the idea of this, but I would like to refrain from adding new notions to a polyfill unless we are anticipating this functionality in the final product.

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@apipkin that's a fair question. The problem is that we don't even know what are the default formatters that browsers might implement. I'm ok with keeping this one in the backlog until we have a better visibility into the future.

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We should think of this as a library, not a polyfill. We have hints as to what might come in a future version of ECMAScript, but we don't have a spec. We should think of this library and our experiences using it as driving forces to get the MessageFormat straw man proposals to real specs in the language.

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I think that's a great way to look at it. With that in mind, is leading with a double underscore the correct api to present?

from intl-messageformat.

This is now provided via IntlMessageFormat.FORMATS.

from intl-messageformat.