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feat(minifier): update invalidImportSideEffects default value #863

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sapphi-red merged 1 commit into from
Feb 17, 2026
+6 −2
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feat(minifier): update invalidImportSideEffects default value #863

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8 changes: 6 additions & 2 deletions src/docs/guide/usage/minifier/dead-code-elimination.md
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Expand Up @@ -258,17 +258,21 @@ const jQuery = $;

### Ignoring Invalid Import Statement Side Effects

By default, Oxc minifier assumes that import statements have side effects. This is because import statements have side effects in the following cases:
By default, Oxc minifier assumes that import statements doesn't have side effects. Import statements have side effects in the following cases:

- the import cannot be resolved
- the import name is not exported from the imported module

You can tell Oxc minifier to ignore those possibilities by setting `compress.treeshake.invalidImportSideEffects` option to `false`.
If these side effects need to be preserved, you can tell Oxc minifier to preserve them by setting `compress.treeshake.invalidImportSideEffects` option to `true`.

```js
// input
import { existing } from "cannot-be-resolved";
import { missing } from "somewhere";

// output (with `compress.treeshake.invalidImportSideEffects: true`)
import { existing } from "cannot-be-resolved";
import { missing } from "somewhere";

// output (with `compress.treeshake.invalidImportSideEffects: false`)
```