es-guard/dist/lib/createESLintConfig.js

A tool to check JavaScript compatibility with target environments

import compat from "eslint-plugin-compat";
import { getBrowserTargetsFromString, parseEcmaVersion } from "./getBrowserTargets.js";
import { isValidEcmaVersion } from "./isValidEcmaVersion.js";
const getEcmaVersion = (target) => {
    const ecmaVersion = parseEcmaVersion(target);
    if (!isValidEcmaVersion(ecmaVersion)) {
        throw new Error(`Invalid ECMAScript version: ${ecmaVersion}. Target year ${target} is not supported.`);
    }
    return ecmaVersion;
};
/**
 * Creates an ESLint configuration that ignores project-level ignore patterns.
 * This ensures that es-guard can scan ALL files in the target directory,
 * including those that would normally be excluded by .eslintignore or other project settings.
 */
export const createESLintConfig = (target, browsers, skipCompatWarnings) => {
    // Convert target year to ECMAScript version number using the validation function
    const ecmaVersion = getEcmaVersion(target);
    // Use provided browsers or auto-determine from target
    const browserTargets = browsers || getBrowserTargetsFromString(target);
    return {
        overrideConfigFile: true,
        // Disable ignore patterns to ensure we scan ALL files in the target directory
        ignore: false,
        // Override any project-level ignore settings
        ignorePatterns: [],
        overrideConfig: [
            {
                // Disable inline config comments (eslint-disable, etc.)
                // This prevents ESLint from processing disable directives for rules not in our config
                linterOptions: {
                    reportUnusedDisableDirectives: false,
                    noInlineConfig: true,
                },
                plugins: {
                    compat,
                },
                rules: {
                    "compat/compat": skipCompatWarnings ? "off" : "warn",
                },
                languageOptions: {
                    ecmaVersion: ecmaVersion,
                    sourceType: "module",
                },
                settings: {
                    browsers: browserTargets,
                },
            },
        ],
    };
};
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