// eslint.config.js
import { createTsResolver } from '#custom-resolver';
const { createOxcResolver } = require('path/to/a/custom/resolver');

const resolverInstance = new ResolverFactory({});
const customResolverObject = {
  interfaceVersion: 3,
  name: 'my-custom-eslint-import-resolver',
  resolve(modPath, sourcePath) {
    const path = resolverInstance.resolve(modPath, sourcePath);
    if (path) {
      return {
        found: true,
        path
      };
    }

    return {
      found: false,
      path: null
    }
  };
};

module.exports = {
  settings: {
    // multiple resolvers
    'import-x/resolver-next': [
      customResolverObject,
      createTsResolver(enhancedResolverOptions),
      createOxcResolver(oxcOptions),
    ],
    // single resolver:
    'import-x/resolver-next': [createOxcResolver(oxcOptions)]
  }
}

// When migrating to `import-x/resolver-next`, you CAN'T use legacy versions of resolvers directly:
module.exports = {
  settings: {
    // THIS WON'T WORK, the resolver interface required for `import-x/resolver-next` is different.
    'import-x/resolver-next': [
       require('eslint-import-resolver-node'),
       require('eslint-import-resolver-webpack'),
       require('some-custom-resolver')
    ];
  }
}

// eslint.config.js
import eslintPluginImportX, { importXResolverCompat } from 'eslint-plugin-import-x';
// or
const eslintPluginImportX = require('eslint-plugin-import-x');
const { importXResolverCompat } = eslintPluginImportX;

module.exports = {
  settings: {
    // THIS WILL WORK as you have wrapped the previous version of resolvers with the `importXResolverCompat`
    'import-x/resolver-next': [
       importXResolverCompat(require('eslint-import-resolver-node'), nodeResolveOptions),
       importXResolverCompat(require('eslint-import-resolver-webpack'), webpackResolveOptions),
       importXResolverCompat(require('some-custom-resolver'), { option1: true, option2: '' })
    ];
  }
}

// custom-resolver.js
exports.createCustomResolver = (options) => {
  // The options are consumed outside the `resolve` function.
  const resolverInstance = new ResolverFactory(options);

  return {
    name: 'custom-resolver',
    interfaceVersion: 3,
    resolve(mod, source) {
      const found = resolverInstance.resolve(mod, {});

      // Of course, you still have access to the `options` variable here inside
      // the `resolve` function. That's the power of JavaScript Closures~
    }
  }
};

// eslint.config.js
const { createCustomResolver } = require('custom-resolver')

module.exports = {
  settings: {
    'import-x/resolver-next': [
       createCustomResolver(options)
    ];
  }
}

module.exports = {
  interfaceVersion: 2,
  resolve(mod, source) {
    // every time the `resolve` function is called, a new instance is created
    // This is very slow
    const resolverInstance = ResolverFactory.createResolver({});
    const found = resolverInstance.resolve(mod, {});
  },
};

exports.createCustomResolver = (options) => {
  // `enhance-resolve` allows you to create a reusable instance:
  const resolverInstance = ResolverFactory.createResolver({});
  const resolverInstance = enhanceResolve.create({});

  // `oxc-resolver` also allows you to create a reusable instance:
  const resolverInstance = new ResolverFactory({});

  return {
    name: "custom-resolver",
    interfaceVersion: 3,
    resolve(mod, source) {
      // the same re-usable instance is shared across `resolve` invocations.
      // more performant
      const found = resolverInstance.resolve(mod, {});
    },
  };
};