diff --git a/scripts/errorCheck.ts b/scripts/errorCheck.ts
index 77892cb8f0..36489c5f31 100644
--- a/scripts/errorCheck.ts
+++ b/scripts/errorCheck.ts
@@ -4,84 +4,84 @@ let async = require('async');
 let glob = require('glob');
 
 fs.readFile('src/compiler/diagnosticMessages.json', 'utf-8', (err, data) => {
-	if (err) {
-		throw err;
-	}
-	
-	let messages = JSON.parse(data);
-	let keys = Object.keys(messages);
-	console.log('Loaded ' + keys.length + ' errors');
+    if (err) {
+        throw err;
+    }
 
-	for (let k of keys) {
-		messages[k]['seen'] = false;
-	}
+    let messages = JSON.parse(data);
+    let keys = Object.keys(messages);
+    console.log('Loaded ' + keys.length + ' errors');
 
-	let errRegex = /\(\d+,\d+\): error TS([^:]+):/g;
+    for (let k of keys) {
+        messages[k]['seen'] = false;
+    }
 
-	let baseDir = 'tests/baselines/reference/';
-	fs.readdir(baseDir, (err, files) => {
-		files = files.filter(f => f.indexOf('.errors.txt') > 0);
-		let tasks: Array<(callback: () => void) => void> = [];
-		files.forEach(f => tasks.push(done => {
-			fs.readFile(baseDir + f, 'utf-8', (err, baseline) => {
-				if (err) throw err;
+    let errRegex = /\(\d+,\d+\): error TS([^:]+):/g;
 
-				let g: string[];
-				while (g = errRegex.exec(baseline)) {
-					var errCode = +g[1];
-					let msg = keys.filter(k => messages[k].code === errCode)[0];
-					messages[msg]['seen'] = true;
-				}
+    let baseDir = 'tests/baselines/reference/';
+    fs.readdir(baseDir, (err, files) => {
+        files = files.filter(f => f.indexOf('.errors.txt') > 0);
+        let tasks: Array<(callback: () => void) => void> = [];
+        files.forEach(f => tasks.push(done => {
+            fs.readFile(baseDir + f, 'utf-8', (err, baseline) => {
+                if (err) throw err;
 
-				done();
-			});
-		}));
+                let g: string[];
+                while (g = errRegex.exec(baseline)) {
+                    var errCode = +g[1];
+                    let msg = keys.filter(k => messages[k].code === errCode)[0];
+                    messages[msg]['seen'] = true;
+                }
 
-		async.parallelLimit(tasks, 25, done => {
-			console.log('== List of errors not present in baselines ==');
-			let count = 0;
-			for (let k of keys) {
-				if (messages[k]['seen'] !== true) {
-					console.log(k);
-					count++;
-				}
-			}
-			console.log(count + ' of ' + keys.length + ' errors are not in baselines');
-		});
-	});
+                done();
+            });
+        }));
+
+        async.parallelLimit(tasks, 25, done => {
+            console.log('== List of errors not present in baselines ==');
+            let count = 0;
+            for (let k of keys) {
+                if (messages[k]['seen'] !== true) {
+                    console.log(k);
+                    count++;
+                }
+            }
+            console.log(count + ' of ' + keys.length + ' errors are not in baselines');
+        });
+    });
 });
 
 fs.readFile('src/compiler/diagnosticInformationMap.generated.ts', 'utf-8', (err, data) => {
-	let errorRegexp = /\s(\w+): \{ code/g;
-	let errorNames: string[] = [];
-	let errMatch: string[];
-	while (errMatch = errorRegexp.exec(data)) {
-		errorNames.push(errMatch[1]);
-	}
+    let errorRegexp = /\s(\w+): \{ code/g;
+    let errorNames: string[] = [];
+    let errMatch: string[];
+    while (errMatch = errorRegexp.exec(data)) {
+        errorNames.push(errMatch[1]);
+    }
 
-	let allSrc: string = '';
-	glob('./src/**/*.ts', {}, (err, files) => {
-		console.log('Reading ' + files.length + ' source files');
-		for(let file of files) {
-			if (file.indexOf('diagnosticInformationMap.generated.ts') > 0) {
-				continue;
-			}
+    let allSrc: string = '';
+    glob('./src/**/*.ts', {}, (err, files) => {
+        console.log('Reading ' + files.length + ' source files');
+        for (let file of files) {
+            if (file.indexOf('diagnosticInformationMap.generated.ts') > 0) {
+                continue;
+            }
 
-			let src = fs.readFileSync(file, 'utf-8');
-			allSrc = allSrc + src;
-		}
+            let src = fs.readFileSync(file, 'utf-8');
+            allSrc = allSrc + src;
+        }
 
-		console.log('Consumed ' + allSrc.length + ' characters of source');
+        console.log('Consumed ' + allSrc.length + ' characters of source');
 
-		let count = 0;
-		console.log('== List of errors not used in source ==')
-		for(let errName of errorNames) {
-			if (allSrc.indexOf(errName) < 0) {
-				console.log(errName);
-				count++;
-			}
-		}
-		console.log(count + ' of ' + errorNames.length + ' errors are not used in source');
-	});
+        let count = 0;
+        console.log('== List of errors not used in source ==')
+        for (let errName of errorNames) {
+            if (allSrc.indexOf(errName) < 0) {
+                console.log(errName);
+                count++;
+            }
+        }
+        console.log(count + ' of ' + errorNames.length + ' errors are not used in source');
+    });
 });