Use ESM eslint config files

[benmccann]

I'm not sure why this uses .cjs files. Maybe a holdover from an old version of eslint

[changeset-bot]

🦋 Changeset detected

Latest commit: c90e9a3

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
create-svelte	Patch

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[Rich-Harris]

oh nice i didn't realise they supported ESM now

[avarun42]

does this actually work? making this change in my own SvelteKit project results in the error:

Error [ERR_REQUIRE_ESM]: require() of ES Module /Users/varun/code/application/.eslintrc.js from /Users/varun/code/application/node_modules/@eslint/eslintrc/dist/eslintrc.cjs not supported.
Instead change the require of .eslintrc.js in /Users/varun/code/application/node_modules/@eslint/eslintrc/dist/eslintrc.cjs to a dynamic import() which is available in all CommonJS modules.

The ESLint docs also state:

JavaScript (ESM) - use .eslintrc.cjs when running ESLint in JavaScript packages that specify "type":"module" in their package.json. Note that ESLint does not support ESM configuration at this time.