eslint-plugin-svelte feat: Add svelte/prefer-const rule that excludes reactive variables

feat: Add svelte/prefer-const rule that excludes reactive variables

Open bfanger opened this issue 1 year ago • 2 comments

The const declaration creates an immutable reference to a value. The variable identifier cannot be reassigned. You should understand const declarations as "create a variable whose identity remains constant"

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/const

The ESLint prefer-const doesn't take into account that Svelte's reactivity system is reassigning reactive variables. The svelte/prefer-const rule skip variables that are created by runes like $props, $derived, $derived.by, etc.

Companion to the rune-prefer-let rule.