@nx/eslint/dist/src/utils/resolve-eslint-class.js

The ESLint plugin for Nx contains executors, generators and utilities used for linting JavaScript/TypeScript projects within an Nx workspace.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.resolveESLintClass = resolveESLintClass;
const flat_config_1 = require("../utils/flat-config");
async function resolveESLintClass(opts) {
    try {
        const shouldESLintUseFlatConfig = typeof opts?.useFlatConfigOverrideVal === 'boolean'
            ? opts.useFlatConfigOverrideVal
            : (0, flat_config_1.useFlatConfig)();
        // In eslint 8.57.0 (the final v8 version), a dedicated API was added for resolving the correct ESLint class.
        const eslintModule = (await import('eslint'));
        if (typeof eslintModule.loadESLint === 'function') {
            return (await eslintModule.loadESLint({
                useFlatConfig: shouldESLintUseFlatConfig,
            }));
        }
        // Explicitly use the FlatESLint and LegacyESLint classes here because the ESLint class points at a different one based on ESLint v8 vs ESLint v9
        // But the decision on which one to use is not just based on the major version of ESLint.
        const { LegacyESLint, FlatESLint } = await import('eslint/use-at-your-own-risk');
        // LegacyESLint's type no longer structurally matches the flat ESLint class
        // in v9 type defs (new static members like defaultConfig, fromOptionsModule),
        // but at runtime either class is an appropriate return value here.
        return (shouldESLintUseFlatConfig ? FlatESLint : LegacyESLint);
    }
    catch {
        throw new Error('Unable to find `eslint`. Ensure a valid `eslint` version is installed.');
    }
}