diff --git a/scripts/load-perf-config.js b/scripts/load-perf-config.js
index 24cb396e93b..647ee9b720f 100644
--- a/scripts/load-perf-config.js
+++ b/scripts/load-perf-config.js
@@ -1,4 +1,4 @@
-const fs = require('fs');
+const { accessSync, constants } = require('fs');
 const path = require('path');
 const rollup = require('../dist/rollup.js');
 
@@ -6,7 +6,7 @@ exports.targetDir = path.resolve(__dirname, '..', 'perf');
 const configFile = path.resolve(exports.targetDir, 'rollup.config.js');
 
 try {
-	fs.accessSync(configFile, fs.constants.R_OK);
+	accessSync(configFile, constants.R_OK);
 } catch (e) {
 	console.error(
 		`No valid "rollup.config.js" in ${exports.targetDir}. Did you "npm run perf:init"?`
diff --git a/scripts/perf-init.js b/scripts/perf-init.js
index 6cd860f73c1..2411e3a8a4e 100644
--- a/scripts/perf-init.js
+++ b/scripts/perf-init.js
@@ -1,6 +1,6 @@
 /* eslint-disable no-console */
 
-const fs = require('fs');
+const { accessSync, constants } = require('fs');
 const path = require('path');
 const execa = require('execa');
 const sander = require('sander');
@@ -43,7 +43,7 @@ async function setupNewRepo(repo, branch) {
 	gitArgs.push(`https://github.com/${repo}.git`, TARGET_DIR);
 	await execWithOutput('git', gitArgs);
 	try {
-		fs.accessSync(path.resolve(TARGET_DIR, 'rollup.config.js'), fs.constants.R_OK);
+		accessSync(path.resolve(TARGET_DIR, 'rollup.config.js'), constants.R_OK);
 	} catch (e) {
 		throw new Error('The repository needs to have a file "rollup.config.js" at the top level.');
 	}
diff --git a/test/hooks/index.js b/test/hooks/index.js
index d0f04609ae1..7470e8fe464 100644
--- a/test/hooks/index.js
+++ b/test/hooks/index.js
@@ -1,4 +1,5 @@
 const assert = require('assert');
+const { readdirSync } = require('fs');
 const path = require('path');
 const sander = require('sander');
 const rollup = require('../../dist/rollup.js');
@@ -33,7 +34,7 @@ describe('hooks', () => {
 				})
 			)
 			.then(() => {
-				const fileNames = sander.readdirSync(TEMP_DIR).sort();
+				const fileNames = readdirSync(TEMP_DIR).sort();
 				assert.deepStrictEqual(fileNames, ['chunk.js', 'input.js']);
 				return sander.rimraf(TEMP_DIR);
 			}));
diff --git a/test/utils.js b/test/utils.js
index ae9be43197a..1c7f5e6ff33 100644
--- a/test/utils.js
+++ b/test/utils.js
@@ -1,5 +1,5 @@
 const assert = require('assert');
-const { unlinkSync } = require('fs');
+const { readdirSync, unlinkSync } = require('fs');
 const path = require('path');
 const fixturify = require('fixturify');
 const sander = require('sander');
@@ -120,8 +120,8 @@ function runSamples(samplesDir, runTest, onTeardown) {
 	if (onTeardown) {
 		afterEach(onTeardown);
 	}
-	sander
-		.readdirSync(samplesDir)
+
+	readdirSync(samplesDir)
 		.filter(name => name[0] !== '.')
 		.sort()
 		.forEach(fileName => runTestsInDir(path.join(samplesDir, fileName), runTest));
@@ -146,7 +146,7 @@ function runTestsInDir(dir, runTest) {
 
 function getFileNamesAndRemoveOutput(dir) {
 	try {
-		return sander.readdirSync(dir).filter(fileName => {
+		return readdirSync(dir).filter(fileName => {
 			if (fileName === '_actual') {
 				sander.rimrafSync(path.join(dir, '_actual'));
 				return false;
diff --git a/test/watch/index.js b/test/watch/index.js
index c305e13df9e..5fd2e0a8dc2 100644
--- a/test/watch/index.js
+++ b/test/watch/index.js
@@ -1,5 +1,12 @@
 const assert = require('assert');
-const { existsSync, promises, readFileSync, unlinkSync, writeFileSync } = require('fs');
+const {
+	existsSync,
+	promises,
+	readdirSync,
+	readFileSync,
+	unlinkSync,
+	writeFileSync
+} = require('fs');
 const path = require('path');
 const sander = require('sander');
 const rollup = require('../../dist/rollup');
@@ -1150,7 +1157,7 @@ describe('rollup.watch', () => {
 					'BUNDLE_END',
 					'END',
 					() => {
-						[dynamicName, staticName, chunkName] = sander.readdirSync('test/_tmp/output').sort();
+						[dynamicName, staticName, chunkName] = readdirSync('test/_tmp/output').sort();
 						sander.rimrafSync('test/_tmp/output');
 
 						// this should only update the hash of that particular entry point