diff --git a/spec/npm/npmSpec.js b/spec/npm/npmSpec.js
index 30bc55f..0fcd48d 100644
--- a/spec/npm/npmSpec.js
+++ b/spec/npm/npmSpec.js
@@ -1,5 +1,3 @@
-const fs = require('fs');
-
 describe('npm', function() {
 	let testEnv;
 
@@ -10,40 +8,34 @@ describe('npm', function() {
 	it('should install and run simply named packages', async function() {
 		const scriptSource = `
 			const uniqueCount = npm.dedupe([1, 2, 2, 3]).length;
-			here.file('output').make(true).content = uniqueCount;
+			process.stdout.write(String(uniqueCount));
 		`;
-
-		await testEnv.runLemonScript(scriptSource);
-
-		const outputPath = testEnv.nativePathFor('output');
-		let value = parseInt(fs.readFileSync(outputPath));
-		expect(value).toBe(3);
+		
+		let scriptOutput = await testEnv.runLemonScript(scriptSource);
+		
+		expect(scriptOutput).toBe('3');
 	});
 
 	it('should install and run scoped packages', async function() {
 		const scriptSource = `
 			const stryker = new npm['@stryker-mutator/core'].Stryker({ concurrency: 4 });
-			here.file('output').make(true).content = stryker.cliOptions.concurrency;
+			process.stdout.write(String(stryker.cliOptions.concurrency));
 		`;
-
-		await testEnv.runLemonScript(scriptSource);
-
-		const outputPath = testEnv.nativePathFor('output');
-		let value = parseInt(fs.readFileSync(outputPath));
-		expect(value).toBe(4);
+		
+		let scriptOutput = await testEnv.runLemonScript(scriptSource);
+		
+		expect(scriptOutput).toBe('4');
 	});
 
 	it('should recognize pinned versions for scoped packages', async function() {
 		// The require header must be in column 0 of the script, thus the unusual formatting
 		const scriptSource = `// tl:require: @octokit/core@3.2.4
-			here.file('output').make(true).content = npm['@octokit/core'].Octokit.VERSION;
+			process.stdout.write(String(npm['@octokit/core'].Octokit.VERSION));
 		`;
-
-		await testEnv.runLemonScript(scriptSource);
-
-		const outputPath = testEnv.nativePathFor('output');
-		let value = fs.readFileSync(outputPath).toString();
-		expect(value).toBe('3.2.4');
+		
+		let scriptOutput = await testEnv.runLemonScript(scriptSource);
+		
+		expect(scriptOutput).toBe('3.2.4');
 	});
 
 	it('should allow require-access to sub files', async function() {
@@ -51,18 +43,17 @@ describe('npm', function() {
 			const uuid_v1 = npm['uuid:v1'];
 			const uuid_v4 = npm['uuid:v4'];
 
-			here.file('output.json').make(true).content = {
+			process.stdout.write(JSON.stringify({
 				v1: uuid_v1.toString(),
 				v4: uuid_v4.toString()
-			};
+			}));
 		`;
-
-		await testEnv.runLemonScript(scriptSource);
-
-		const outputPath = testEnv.nativePathFor('output.json');
-		let value = JSON.parse(fs.readFileSync(outputPath));
-		expect(value.v1).toContain('function v1');
-		expect(value.v4).toContain('function v4');
+		
+		let scriptOutput = await testEnv.runLemonScript(scriptSource);
+		
+		let parsedScriptOutput = JSON.parse(scriptOutput);
+		expect(parsedScriptOutput.v1).toContain('function v1');
+		expect(parsedScriptOutput.v4).toContain('function v4');
 	});
 
 	describe('(pre-0.3)', function() {
@@ -72,18 +63,17 @@ describe('npm', function() {
 				const uuid_v1 = npm['uuid/v1'];
 				const uuid_v4 = npm['uuid/v4'];
 	
-				here.file('output.json').make(true).content = {
+				process.stdout.write(JSON.stringify({
 					v1: uuid_v1.toString(),
 					v4: uuid_v4.toString()
-				};
+				}));
 			`;
-	
-			await testEnv.runLemonScript(scriptSource, [], ['--no-pin']);
-	
-			const outputPath = testEnv.nativePathFor('output.json');
-			let value = JSON.parse(fs.readFileSync(outputPath));
-			expect(value.v1).toContain('function v1');
-			expect(value.v4).toContain('function v4');
+			
+			let scriptOutput = await testEnv.runLemonScript(scriptSource, [], ['--no-pin']);
+			
+			let parsedScriptOutput = JSON.parse(scriptOutput);
+			expect(parsedScriptOutput.v1).toContain('function v1');
+			expect(parsedScriptOutput.v4).toContain('function v4');
 		});
 	});
 });