[LOOM-2186]: Convert to strict es modules

[xalechez]

Part of upgrading dependencies for web-foundations (Nx plugin needs Stylelint 16 which is currently blocked because our plugins don't use strict ESM)

[Faye-Xiao]

A small question:
Since the "import/extensions": "off"`, why do we add the file suffix? 🤔 If I'm not mistaken, when this config is off, it supports both suffixed and unsuffixed files. Are there any special considerations here? Or I missed something?

[Copilot]

Pull Request Overview

This PR updates the package to strict ES modules syntax, adds explicit exports in package.json, and adjusts import paths and linting to support ESM.

• Add exports field in package.json for ESM entry points
• Migrate CommonJS module.exports to export syntax in utility modules
• Update import statements to use .js extensions across rules and root index
• Adjust ESLint config to accommodate extended import patterns

Reviewed Changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
package.json	Defined ESM exports to support strict module resolution
lib/utils/token-props.js	Replaced module.exports with export const definitions
lib/rules/use-tokens/utils.js	Added .js extensions on imports from token-props
lib/rules/use-tokens/parseShorthand.js	Updated import to ./utils.js
lib/rules/use-tokens/index.js	Updated imports to include .js extensions
lib/rules/use-colors/index.js	Updated import to token-utils.js
index.js	Updated plugin import to index.js path
.eslintrc.json	Disabled import/extensions rule to allow .js paths

Comments suppressed due to low confidence (2)

package.json:14

• The package.json is missing a "type": "module" field, which is required for Node to treat .js files as ES modules. Add "type": "module" at the root of package.json to enable strict ESM.

  "exports": {

.eslintrc.json:4

• [nitpick] Consider re-enabling and configuring the import/extensions rule to enforce consistent .js extensions instead of disabling it entirely.

    "import/extensions": "off"

[Faye-Xiao]

LGTM.