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Jun 25, 2025
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docs: Simplify TS config docs #16236

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ca8db4b
Simplify TypeScript config requirements
brunnerh Jun 25, 2025
6da6100
Add back a little bit of detail.
brunnerh Jun 25, 2025
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2 changes: 1 addition & 1 deletion documentation/docs/07-misc/03-typescript.md
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Expand Up @@ -83,7 +83,7 @@ If you're using tools like Rollup or Webpack instead, install their respective S

When using TypeScript, make sure your `tsconfig.json` is setup correctly.

- Use a [`target`](https://www.typescriptlang.org/tsconfig/#target) of at least `ES2022`, or a `target` of at least `ES2015` alongside [`useDefineForClassFields`](https://www.typescriptlang.org/tsconfig/#useDefineForClassFields). This ensures that rune declarations on class fields are not messed with, which would break the Svelte compiler
- Use a [`target`](https://www.typescriptlang.org/tsconfig/#target) of at least `ES2015` so classes are not compiled to functions
- Set [`verbatimModuleSyntax`](https://www.typescriptlang.org/tsconfig/#verbatimModuleSyntax) to `true` so that imports are left as-is
- Set [`isolatedModules`](https://www.typescriptlang.org/tsconfig/#isolatedModules) to `true` so that each file is looked at in isolation. TypeScript has a few features which require cross-file analysis and compilation, which the Svelte compiler and tooling like Vite don't do.

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