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[compiler] Add CompilerError.UnsupportedJS variant #33750
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poteto
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Jul 9, 2025
This was referenced Jul 9, 2025
josephsavona
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) * Error for `eval()` * More specific error message for `with (expr) { ... }` syntax * More specific error message for class declarations --- [//]: # (BEGIN SAPLING FOOTER) Stack created with [Sapling](https://sapling-scm.com). Best reviewed with [ReviewStack](https://reviewstack.dev/facebook/react/pull/33746). * #33752 * #33751 * #33750 * #33748 * #33747 * __->__ #33746
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Supports inline enum declarations in both Flow and TS by treating the node as pass-through (enums can't capture values mutably). Related, this PR extends the set of type-related declarations that we ignore. Previously we threw a todo for things like DeclareClass or DeclareVariable, but these are type related and can simply be dropped just like we dropped TypeAlias. --- [//]: # (BEGIN SAPLING FOOTER) Stack created with [Sapling](https://sapling-scm.com). Best reviewed with [ReviewStack](https://reviewstack.dev/facebook/react/pull/33747). * #33753 * #33752 * #33751 * #33750 * #33748 * __->__ #33747
…atements import, export, and TS namespace statements can only be used at the top-level of a module, which is enforced by parsers already. Here we add a backup validation of that. As of this PR, we now have only major statement type (class declarations) listed as a todo.
We use this variant for syntax we intentionally don't support: with statements, eval, and inline class declarations.
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…atements (#33748) import, export, and TS namespace statements can only be used at the top-level of a module, which is enforced by parsers already. Here we add a backup validation of that. As of this PR, we now have only major statement type (class declarations) listed as a todo. --- [//]: # (BEGIN SAPLING FOOTER) Stack created with [Sapling](https://sapling-scm.com). Best reviewed with [ReviewStack](https://reviewstack.dev/facebook/react/pull/33748). * #33753 * #33752 * #33751 * #33750 * __->__ #33748
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) * Error for `eval()` * More specific error message for `with (expr) { ... }` syntax * More specific error message for class declarations --- [//]: # (BEGIN SAPLING FOOTER) Stack created with [Sapling](https://sapling-scm.com). Best reviewed with [ReviewStack](https://reviewstack.dev/facebook/react/pull/33746). * #33752 * #33751 * #33750 * #33748 * #33747 * __->__ #33746 DiffTrain build for [4a3ff8e](4a3ff8e)
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) * Error for `eval()` * More specific error message for `with (expr) { ... }` syntax * More specific error message for class declarations --- [//]: # (BEGIN SAPLING FOOTER) Stack created with [Sapling](https://sapling-scm.com). Best reviewed with [ReviewStack](https://reviewstack.dev/facebook/react/pull/33746). * #33752 * #33751 * #33750 * #33748 * #33747 * __->__ #33746 DiffTrain build for [4a3ff8e](4a3ff8e)
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We use this variant for syntax we intentionally don't support: with statements, eval, and inline class declarations. --- [//]: # (BEGIN SAPLING FOOTER) Stack created with [Sapling](https://sapling-scm.com). Best reviewed with [ReviewStack](https://reviewstack.dev/facebook/react/pull/33750). * #33753 * #33752 * #33751 * __->__ #33750 * #33748 DiffTrain build for [96c61b7](96c61b7)
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We use this variant for syntax we intentionally don't support: with statements, eval, and inline class declarations. --- [//]: # (BEGIN SAPLING FOOTER) Stack created with [Sapling](https://sapling-scm.com). Best reviewed with [ReviewStack](https://reviewstack.dev/facebook/react/pull/33750). * #33753 * #33752 * #33751 * __->__ #33750 * #33748 DiffTrain build for [96c61b7](96c61b7)
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We use this variant for syntax we intentionally don't support: with statements, eval, and inline class declarations.
Stack created with Sapling. Best reviewed with ReviewStack.