Explicitly typecheck js files

Author: mxmason

src/config.js

@@ -1,3 +1,5 @@
+// @ts-check
+
 const DEFAULT_CHECK_PATHS = ['/']
 const DEFAULT_FAIL_WITH_ISSUES = true
 const DEFAULT_IGNORE_DIRECTORIES = []

src/index.js

@@ -1,3 +1,5 @@
+// @ts-check
+
 const { getConfiguration } = require('./config')
 const pluginCore = require('./pluginCore')
 
@@ -17,7 +19,6 @@ module.exports = {
 
 			const { report, issueCount } = await pluginCore.runPa11y({
 				build,
-				debugMode,
 				htmlFilePaths,
 				pa11yOpts,
 			})

src/pluginCore.js

@@ -1,3 +1,5 @@
+// @ts-check
+
 const pa11y = require('pa11y')
 const { extname } = require('path')
 const { isDirectory, isFile } = require('path-type')
@@ -32,8 +34,6 @@ exports.generateFilePaths = async function ({
 	fileAndDirPaths, // array, mix of html and directories
 	ignoreDirectories,
 	absolutePublishDir,
-	testMode,
-	debugMode,
 }) {
 	const excludeDirGlobs = ignoreDirectories.map(
 		// add ! and strip leading slash