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dc6980230d
We currently have three different implementations of the `resolveThemeValue()` Theme method: 1. The _core_ version which only resolves based on the exact CSS variable name. This is the v4-only version. 2. A _compat light_ version which attempts to translate a dot-notation keypath to a CSS variable name. 3. A _full compat_ version which resolves the legacy theme object which is used whenever a `@plugin` or `@config` is added. Unfortunately, there are some issues with this approach that we've encountered when testing the CSS `theme()` function while upgrading Tailwind Templates to v4 using our upgrading toolkit. 1. The _compat light_ resolver was trying to convert `theme(spacing.1)` to tuple syntax. Tuples require a nested property access, though, and instead this should be convert to `theme(--spacing-1)`. 2. We currently only load _full compat_ version if `@plugin` or `@config` directives are used. It is possible, though, that we need the full compat mapping in other cases as well. One example we encountered is `theme(fontWeight.semibold)` which maps to a dictionary in the default theme that that we do not have an equivalent for in v4 variables. To fix both issues, we decided to remove the _compat light_ version of the `theme()` function in favor of adding this behavior to an upgrade codemod. Instead, the second layer now only decides wether it can use the _core_ version or wether it needs to upgrade to the _full compat_ version. Since typos would trigger a _hard error_, we do not think this has unintended performance consequences if someone wants to use the _core_ version only (they would get an error regardless which they need to fix in order to continue). |
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A utility-first CSS framework for rapidly building custom user interfaces.
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