feat: add eslint-config option to run command

Enables custom ESLint configurations for config-based benchmarks.
This extends the same functionality that was already available in
run-single command to the run command for consistency.

Author: christopher-buss

cli/index.ts

@@ -69,6 +69,9 @@ interface RunCommandOptions {
    */
   report?: ReporterFormat
 
+  /** Optional. Path to an ESLint configuration file to use for linting. */
+  eslintConfig?: string
+
   /**
    * Optional. Path to the benchmark configuration file. If not provided,
    * searches for default config files.
@@ -108,6 +111,7 @@ export function run(): void {
   cli
     .command('run', 'Run benchmarks from config')
     .option('--config <path>', 'Path to configuration file')
+    .option('--eslint-config <config>', 'Path to ESLint config file')
     .option('--report <format>', 'Report format (console, json, markdown)', {
       default: DEFAULT_REPORTER_FORMAT,
     })
@@ -135,6 +139,7 @@ export function run(): void {
         ]
 
         await runBenchmarksFromConfig({
+          eslintConfigFile: options.eslintConfig,
           reporterOptions: reporterOptionsArray,
           userConfig: config,
           configDirectory,

test/runners/run-benchmarks-from-config.test.ts

@@ -833,4 +833,25 @@ describe('runBenchmarksFromConfig', () => {
       configDirectory,
     })
   })
+
+  it('should pass eslintConfigFile parameter to runBenchmark when provided', async () => {
+    let customEslintConfigPath = '/path/to/custom/eslint.config.js'
+
+    await runBenchmarksFromConfig({
+      eslintConfigFile: customEslintConfigPath,
+      reporterOptions: mockReporterOptions,
+      userConfig: mockUserConfig,
+      configDirectory,
+    })
+
+    expect(mockedRunBenchmark).toHaveBeenCalledWith({
+      config: expect.objectContaining({
+        warmup: expect.any(Object) as object,
+        name: expect.any(String) as string,
+      }) as object,
+      testCases: expect.any(Array) as unknown as TestCase[],
+      eslintConfigFile: customEslintConfigPath,
+      configDirectory,
+    })
+  })
 })