ignore external imports - fixes #3

index.js

@@ -1,5 +1,6 @@
 const path = require('path');
 const { rollup } = require('rollup');
+const acorn = require('acorn');
 const virtual = require('rollup-plugin-virtual');
 
 exports.check = input => {
@@ -18,10 +19,21 @@ exports.check = input => {
 	}).then(bundle => bundle.generate({
 		format: 'esm'
 	})).then(result => {
-		console.log(result.output[0].code);
+		const { code } = result.output[0];
+
+		const ast = acorn.parse(code, {
+			ecmaVersion: 11,
+			sourceType: 'module'
+		});
+
+		const nodes = ast.body.filter(node => {
+			return node.type !== 'ImportDeclaration';
+		});
+
+		console.log(code);
 
 		return {
-			shaken: result.output[0].code.trim() === ''
+			shaken: nodes.length === 0
 		};
 	});
 };

package.json

@@ -28,6 +28,7 @@
   },
   "homepage": "https://github.com/Rich-Harris/agadoo#readme",
   "dependencies": {
+    "acorn": "^7.1.0",
     "rollup": "^1",
     "rollup-plugin-virtual": "^1.0.1"
   },

test/index.js

@@ -4,7 +4,7 @@ const c = require('kleur');
 const child_process = require('child_process');
 
 const exec = cmd => new Promise((fulfil, reject) => {
-	child_process.exec(cmd, err => {
+	child_process.exec(cmd, (err, stdout, stderr) => {
 		if (err) {
 			reject(err);
 		} else {
@@ -49,9 +49,9 @@ async function main() {
 
 			try {
 				await exec(`agadoo`);
+				failed = true;
 				console.log(`${c.bold().red('✗')} ${dir}`);
 			} catch (err) {
-				failed = true;
 				console.log(`${c.bold().green('✓')} ${dir}`);
 			}
 		}

test/pass/external-imports/package.json

@@ -0,0 +1 @@
+{}