initial eslint.config.js

eslint.config.js

@@ -0,0 +1,76 @@
+const typescriptPlugin = require('@typescript-eslint/eslint-plugin');
+const typescriptParser = require('@typescript-eslint/parser');
+
+// TODO: prettier
+
+const config = [
+	{
+		ignores: [
+			'build/**',
+			'test/baselines/**'
+		],
+	},
+
+	// ts specific overrides
+	// https://typescript-eslint.io/rules/
+	{
+		files: ['**/*.{ts,mts,cts,tsx}'],
+
+		languageOptions: {
+			parser: typescriptParser,
+			parserOptions: {
+				project: true
+			}
+		},
+		plugins: {
+			'@typescript-eslint': typescriptPlugin
+		},
+		rules: {
+			...typescriptPlugin.configs['recommended'].rules,
+
+			"@typescript-eslint/no-parameter-properties": "off",
+			"@typescript-eslint/no-explicit-any": "off",
+			"@typescript-eslint/no-use-before-define": [
+				"error",
+				{
+					functions: false,
+					typedefs: false,
+					classes: false,
+				},
+			],
+			"@typescript-eslint/no-unused-vars": [
+				"error",
+				{
+					ignoreRestSiblings: true,
+					argsIgnorePattern: "^_",
+				},
+			],
+			"@typescript-eslint/explicit-function-return-type": [
+				"warn",
+				{
+					allowExpressions: true,
+					allowTypedFunctionExpressions: true,
+				},
+			],
+			"@typescript-eslint/no-object-literal-type-assertion": "off",
+			"@typescript-eslint/interface-name-prefix": "off",
+			"@typescript-eslint/no-non-null-assertion": "off", // This is necessary for Map.has()/get()!
+			"@typescript-eslint/no-inferrable-types": [
+				"error",
+				{
+					ignoreParameters: true,
+					ignoreProperties: true,
+				},
+			],
+		}
+	},
+
+	{
+		files: ["**/*.test.ts"],
+		rules: {
+			"@typescript-eslint/explicit-function-return-type": "off",
+		},
+	}
+];
+
+module.exports = config;