feat: add @babel/plugin-syntax-decorators and @babel/preset-typescrip…

…t presets

index.js

@@ -55,6 +55,7 @@ export async function load(url, context, nextLoad) {
 
 	/* Can/should this handle inputSourceMap? */
 	const {code} = await babel.transformAsync(source, {
+		presets: ['@babel/preset-typescript'],
 		babelrc: false,
 		configFile: false,
 		filename,
@@ -67,7 +68,8 @@ export async function load(url, context, nextLoad) {
 			plugins: babelConfig.parserPlugins
 		},
 		plugins: [
-			['babel-plugin-istanbul', babelConfig]
+			['babel-plugin-istanbul', babelConfig],
+			['@babel/plugin-syntax-decorators', {decoratorsBeforeExport: true}]
 		]
 	});
 

package.json

@@ -26,6 +26,8 @@
 	},
 	"homepage": "https://github.com/istanbuljs/esm-loader-hook#readme",
 	"dependencies": {
+		"@babel/plugin-syntax-decorators": "^7.25.9",
+		"@babel/preset-typescript": "^7.26.0",
 		"@babel/core": "^7.8.7",
 		"@istanbuljs/load-nyc-config": "^1.1.0",
 		"@istanbuljs/schema": "^0.1.3",