Use commander package to replace current implementation of CLI options

package.json

@@ -27,7 +27,7 @@
     "postversion": "npm install --package-lock-only --ignore-scripts --silent",
     "tsx": "tsx",
     "lint": "test -f ./dist/bin/lint.js || npm run build && ./dist/bin/lint.js",
-    "lintfix": "sh -c 'test -f ./dist/bin/lint.js || npm run build && ./dist/bin/lint.js --fix'",
+    "lintfix": "sh -c 'test -f ./dist/bin/lint.js || npm run build && ./dist/bin/lint.js --fix --eslint \"{src,scripts}/**/*.{js,mjs,ts,mts,jsx,tsx}\"'",
     "lint-shell": "find ./src ./tests ./scripts -type f -regextype posix-extended -regex '.*\\.(sh)' -exec shellcheck {} +",
     "docs": "shx rm -rf ./docs && typedoc --entryPointStrategy expand --gitRevision master --tsconfig ./tsconfig.build.json --out ./docs src",
     "test": "node ./scripts/test.mjs"
@@ -38,11 +38,11 @@
     "@typescript-eslint/eslint-plugin": "^8.27.0",
     "@typescript-eslint/parser": "^8.27.0",
     "@typescript-eslint/utils": "^8.26.1",
-    "eslint": "^9.18.0",
+    "eslint": ">=9.0.0",
     "eslint-config-prettier": "^9.1.0",
     "eslint-plugin-import": "^2.31.0",
-    "eslint-plugin-prettier": "^5.2.1",
     "eslint-plugin-jsx-a11y": "^6.10.2",
+    "eslint-plugin-prettier": "^5.2.1",
     "eslint-plugin-react": "^7.37.4",
     "eslint-plugin-react-hooks": "^5.1.0",
     "eslint-plugin-tailwindcss": "^3.18.0"
@@ -52,9 +52,11 @@
     "@swc/jest": "^0.2.29",
     "@types/jest": "^29.5.2",
     "@types/node": "^20.5.7",
+    "commander": "^13.1.0",
     "jest": "^29.6.2",
     "jest-extended": "^4.0.2",
     "jest-junit": "^16.0.0",
+    "minimatch": "^10.0.1",
     "prettier": "^3.0.0",
     "shx": "^0.3.4",
     "tsconfig-paths": "^3.9.0",

src/bin/lint.ts

@@ -1,39 +1,44 @@
 #!/usr/bin/env node
+import type { CLIOptions } from '../types.js';
 import os from 'node:os';
 import path from 'node:path';
 import process from 'node:process';
 import childProcess from 'node:child_process';
 import fs from 'node:fs';
+import { Command } from 'commander';
 import * as utils from '../utils.js';
 
 const platform = os.platform();
+const program = new Command();
+
+program
+  .name('matrixai-lint')
+  .description(
+    'Lint source files, scripts, and markdown with configured rules.',
+  )
+  .option('-f, --fix', 'Automatically fix problems')
+  .option(
+    '--user-config',
+    'Use user-provided ESLint config instead of built-in one',
+  )
+  .option('--config <path>', 'Path to explicit ESLint config file')
+  .option('--eslint <pat...>', 'Glob(s) to pass to ESLint')
+  .option('--shell  <pat...>', 'Glob(s) to pass to shell-check')
+  .allowUnknownOption(true); // Optional: force rejection of unknown flags
 
 /* eslint-disable no-console */
 async function main(argv = process.argv) {
-  argv = argv.slice(2);
+  await program.parseAsync(argv);
+  const options = program.opts<CLIOptions>();
+
+  const fix = Boolean(options.fix);
+  const useUserConfig = Boolean(options.userConfig);
+  const explicitConfigPath: string | undefined = options.config;
+
+  const eslintPatterns: string[] | undefined = options.eslint;
+  const shellPatterns: string[] | undefined = options.shell;
 
   let hadFailure = false;
-  let fix = false;
-  let useUserConfig = false;
-  let explicitConfigPath: string | undefined;
-  const restArgs: string[] = [];
-
-  while (argv.length > 0) {
-    const option = argv.shift()!;
-    switch (option) {
-      case '--fix':
-        fix = true;
-        break;
-      case '--user-config':
-        useUserConfig = true;
-        break;
-      case '--config':
-        explicitConfigPath = argv.shift(); // Grab the next token
-        break;
-      default:
-        restArgs.push(option);
-    }
-  }
 
   // Resolve which config file to use
   let chosenConfig: string | undefined;
@@ -59,7 +64,11 @@ async function main(argv = process.argv) {
   }
 
   try {
-    await utils.runESLint({ fix, configPath: chosenConfig });
+    await utils.runESLint({
+      fix,
+      configPath: chosenConfig,
+      explicitGlobs: eslintPatterns,
+    });
   } catch (err) {
     console.error(`ESLint failed: \n${err}`);
     hadFailure = true;

src/types.ts

@@ -8,4 +8,12 @@ type RawMatrixCfg = Partial<{
   forceInclude: unknown;
 }>; // “might have these two keys, values are unknown”
 
-export type { MatrixAILintCfg, RawMatrixCfg };
+type CLIOptions = {
+  fix: boolean;
+  userConfig: boolean;
+  config?: string;
+  eslint?: string[];
+  shell?: string[];
+};
+
+export type { MatrixAILintCfg, RawMatrixCfg, CLIOptions };

src/utils.ts

@@ -11,52 +11,72 @@ import { ESLint } from 'eslint';
 async function runESLint({
   fix,
   configPath,
+  explicitGlobs,
 }: {
   fix: boolean;
   configPath?: string;
+  explicitGlobs?: string[];
 }) {
   const dirname = path.dirname(url.fileURLToPath(import.meta.url));
   const defaultConfigPath = path.resolve(dirname, './configs/js.js');
 
-  const matrixaiLintConfig = resolveMatrixConfig();
-  const forceInclude = matrixaiLintConfig.forceInclude;
-  const tsconfigPaths = matrixaiLintConfig.tsconfigPaths;
+  // PATH A – user supplied explicit globs
+  if (explicitGlobs?.length) {
+    console.log('Linting with explicit patterns:');
+    explicitGlobs.forEach((g) => console.log('  ' + g));
+
+    const eslint = new ESLint({
+      overrideConfigFile: configPath || defaultConfigPath,
+      fix,
+      errorOnUnmatchedPattern: false,
+      warnIgnored: false,
+      ignorePatterns: [], // Trust caller entirely
+    });
+
+    await lintAndReport(eslint, explicitGlobs, fix);
+    return;
+  }
+
+  // PATH B – default behaviour (tsconfig + matrix config)
+  const { forceInclude, tsconfigPaths } = resolveMatrixConfig();
 
   if (tsconfigPaths.length === 0) {
     console.error('[matrixai-lint]  ⚠  No tsconfig.json files found.');
   }
 
   console.log(`Found ${tsconfigPaths.length} tsconfig.json files:`);
-  tsconfigPaths.forEach((tsconfigPath) => console.log('  ' + tsconfigPath));
+  tsconfigPaths.forEach((p) => console.log('  ' + p));
 
-  const { files: lintFiles, ignore } = buildPatterns(
+  const { files: patterns, ignore: ignorePats } = buildPatterns(
     tsconfigPaths[0],
     forceInclude,
   );
 
   console.log('Linting files:');
-  lintFiles.forEach((file) => console.log(' ' + file));
+  patterns.forEach((p) => console.log('  ' + p));
 
   const eslint = new ESLint({
     overrideConfigFile: configPath || defaultConfigPath,
     fix,
     errorOnUnmatchedPattern: false,
     warnIgnored: false,
-    ignorePatterns: ignore,
+    ignorePatterns: ignorePats,
   });
 
-  const results = await eslint.lintFiles(lintFiles);
+  await lintAndReport(eslint, patterns, fix);
+}
+
+async function lintAndReport(eslint: ESLint, patterns: string[], fix: boolean) {
+  const results = await eslint.lintFiles(patterns);
 
   if (fix) {
     await ESLint.outputFixes(results);
   }
 
   const formatter = await eslint.loadFormatter('stylish');
-  const resultText = formatter.format(results);
-  console.log(resultText);
-
-  /* eslint-enable no-console */
+  console.log(formatter.format(results));
 }
+/* eslint-enable no-console */
 
 /**
  * Find the user's ESLint config file in the current working directory.