postal.js/eslint.config.mjs at master · postaljs/postal.js · GitHub

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import js from "@eslint/js";
import tsPlugin from "@typescript-eslint/eslint-plugin";
import tsParser from "@typescript-eslint/parser";
import prettier from "eslint-config-prettier";
import globals from "globals";

export default [
    {
        ignores: ["**/dist/**", "**/node_modules/**", "archive/**"],
    },
    js.configs.recommended,
    {
        files: ["**/*.{ts,tsx}"],
        languageOptions: {
            parser: tsParser,
            parserOptions: {
                ecmaVersion: "latest",
                sourceType: "module",
            },
            globals: {
                ...globals.node,
                ...globals.browser,
                ...globals.jest,
            },
        },
        plugins: {
            "@typescript-eslint": tsPlugin,
        },
        rules: {
            ...tsPlugin.configs.recommended.rules,
            // TypeScript handles undefined-variable checking far better than
            // ESLint's no-undef — which doesn't understand TS-only globals
            // like Transferable, ReadableStream, etc.
            // https://typescript-eslint.io/troubleshooting/faqs/eslint/#i-get-errors-from-the-no-undef-rule-about-global-variables-not-being-defined
            "no-undef": "off",
            "@typescript-eslint/explicit-module-boundary-types": "off",
            "@typescript-eslint/no-explicit-any": "warn",
            "no-redeclare": "off",
            "no-duplicate-imports": 1,
            "@typescript-eslint/no-unused-vars": [
                "warn",
                {
                    varsIgnorePattern: "^_",
                    argsIgnorePattern: "^_",
                },
            ],
            "@typescript-eslint/no-unused-expressions": [
                "error",
                {
                    allowShortCircuit: true,
                    allowTernary: true,
                    allowTaggedTemplates: true,
                },
            ],
        },
    },
    prettier,
];