Build: upgrade dependencies, including eslint 9.4.0 and uglify 3.7.7

- Sinon is already at the latest version that supports IE9.
- Upgraded uglify to 3.7.7, which is the latest that worked with IE9.
  I tried 3.9.4, which we are using in jquery-migrate, and 3.8.1,
  but there were failures in traversing ("Permission denied" errors).
- Upgraded eslint to version 9, which required some changes.
  Mainly, unused arguments in catch expressions error by default in 9+.
  The config now makes use of `caughtErrorsIgnorePattern`,
  which is set to `"^_"`, the same as unused function params.
- Ignored main branch dist files when switching branches.

Closes jquerygh-5508

Author: timmywil

.gitignore

@@ -14,6 +14,9 @@ npm-debug.log*
 
 /dist
 
+# Ignore main branch builds
+/dist-module
+
 /external
 /node_modules
 

build/tasks/build.js

@@ -57,7 +57,7 @@ async function readdirRecursive( dir, all = [] ) {
 		files = await fs.readdir( path.join( srcFolder, dir ), {
 			withFileTypes: true
 		} );
-	} catch ( e ) {
+	} catch ( _ ) {
 		return all;
 	}
 	for ( const file of files ) {

build/tasks/compare_size.mjs

@@ -36,7 +36,7 @@ async function getCache( loc ) {
 	try {
 		const contents = await fs.readFile( loc, "utf8" );
 		cache = JSON.parse( contents );
-	} catch ( err ) {
+	} catch ( _ ) {
 		return {};
 	}
 

build/tasks/promises_aplus_tests.js

@@ -24,7 +24,7 @@ async function runTests() {
 		spawn(
 			command,
 			[ test ].concat( args ),
-			{ stdio: "inherit" }
+			{ shell: true, stdio: "inherit" }
 		);
 	} );
 }

eslint.config.js

@@ -11,7 +11,12 @@ module.exports = [
 		// See https://github.com/eslint/eslint/discussions/17412
 		ignores: [
 			"external",
-			"test/data/json_obj.js"
+			"test/data/json_obj.js",
+			"test/data/jquery-*.js",
+
+			// This avoids parsing local main branch builds
+			"dist/jquery.factory.*",
+			"dist-module"
 		]
 	},
 
@@ -47,6 +52,10 @@ module.exports = [
 				}
 			],
 			"no-implicit-globals": "error",
+			"no-unused-vars": [
+				"error",
+				{ caughtErrorsIgnorePattern: "^_" }
+			],
 			"one-var": [ "error", { var: "always" } ],
 			strict: [ "error", "function" ]
 		}
@@ -105,7 +114,6 @@ module.exports = [
 			"test/unit/**"
 		],
 		ignores: [
-			"test/data/jquery-3.7.1.js",
 			"test/data/badcall.js",
 			"test/data/badjson.js",
 			"test/data/support/csp.js",
@@ -149,7 +157,11 @@ module.exports = [
 
 			"no-unused-vars": [
 				"error",
-				{ args: "after-used", argsIgnorePattern: "^_" }
+				{
+					args: "after-used",
+					argsIgnorePattern: "^_",
+					caughtErrorsIgnorePattern: "^_"
+				}
 			],
 
 			// Too many errors
@@ -197,7 +209,9 @@ module.exports = [
 	},
 
 	{
-		files: [ "test/runner/listeners.js" ],
+		files: [
+			"test/runner/listeners.js"
+		],
 		languageOptions: {
 			ecmaVersion: 5,
 			sourceType: "script",
@@ -268,6 +282,10 @@ module.exports = [
 		rules: {
 			...jqueryConfig.rules,
 			"no-implicit-globals": "error",
+			"no-unused-vars": [
+				"error",
+				{ caughtErrorsIgnorePattern: "^_" }
+			],
 			strict: [ "error", "global" ]
 		}
 	},
@@ -302,6 +320,11 @@ module.exports = [
 			// That is okay for the built version
 			"no-multiple-empty-lines": "off",
 
+			"no-unused-vars": [
+				"error",
+				{ caughtErrorsIgnorePattern: "^_" }
+			],
+
 			// When custom compilation is used, the version string
 			// can get large. Accept that in the built version.
 			"max-len": "off",