error: Not available in legacy mode

Reporting a bug?

version:9.2.0-beta.31

example： const { t } = useI18n(); or const { t } = useI18n({ useScope: ‘global’})

error info: message-compiler.esm-bundler.js:54 Uncaught (in promise) SyntaxError: Not available in legacy mode at createCompileError (message-compiler.esm-bundler.js:54:1) at createI18nError (vue-i18n.esm-bundler.js💯30) at useI18n (vue-i18n.esm-bundler.js:2210:1)

Expected behavior

use example is normal

Reproduction

1

System Info

nothing

Screenshot

nothing

Additional context

nothing

Validations

• Read the Contributing Guidelines
• Read the Documentation
• Check that there isn’t already an issue that reports the same bug to avoid creating a duplicate.
• Check that this is a concrete bug. For Q&A open a GitHub Discussion
• The provided reproduction is a minimal reproducible example of the bug.

[kazupon]

@Shinigami92 Yeah. Unfortunately 😞 , useI18n on legacy mode is lazy because the legacy mode is implemented using of beforeCreate mixin. vue core cannot allow to setup hook in mixin. If we want to use t in the setup function directly not template, we need to wait on nextTick etc. I’ll add it to the docs as a limitation.

[Shinigami92]

I would like to say that I will stay on 9.2.0-beta.30 for now due to the breaking behavior I will see how it will taken by the community and if they accept that breaking change when it arrives in 9.2.0