diff --git a/.gitignore b/.gitignore
index d6cd819d4d8..ee0f7c63a7a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -174,6 +174,10 @@ utils/block-nameify.test.js
 utils/slugs.js
 utils/slugs.test.js
 utils/index.js
+utils/get-lines.js
+utils/get-lines.test.js
+utils/validate.js
+utils/validate.test.js
 
 ### vim ###
 # Swap
diff --git a/.prettierignore b/.prettierignore
index 5270c577f42..1eaa453cf7a 100644
--- a/.prettierignore
+++ b/.prettierignore
@@ -16,6 +16,10 @@ utils/block-nameify.test.js
 utils/slugs.js
 utils/slugs.test.js
 utils/index.js
+utils/get-lines.js
+utils/get-lines.test.js
+utils/validate.js
+utils/validate.test.js
 **/package-lock.json
 web/.next
 curriculum-server/data/curriculum.json
diff --git a/utils/get-lines.js b/utils/get-lines.js
deleted file mode 100644
index 9e883aec0e9..00000000000
--- a/utils/get-lines.js
+++ /dev/null
@@ -1,15 +0,0 @@
-const { isEmpty } = require('lodash');
-
-function getLines(contents, range) {
-  if (isEmpty(range)) {
-    return '';
-  }
-  const lines = contents.split('\n');
-  const editableLines =
-    isEmpty(lines) || range[1] <= range[0]
-      ? []
-      : lines.slice(range[0], range[1] - 1);
-  return editableLines.join('\n');
-}
-
-exports.getLines = getLines;
diff --git a/utils/get-lines.test.js b/utils/get-lines.test.ts
similarity index 95%
rename from utils/get-lines.test.js
rename to utils/get-lines.test.ts
index 2de1f1c0575..e3044167dcd 100644
--- a/utils/get-lines.test.js
+++ b/utils/get-lines.test.ts
@@ -1,4 +1,4 @@
-const { getLines } = require('./get-lines');
+import { getLines } from './get-lines';
 
 const content = 'one\ntwo\nthree';
 
diff --git a/utils/get-lines.ts b/utils/get-lines.ts
new file mode 100644
index 00000000000..a13112dfee6
--- /dev/null
+++ b/utils/get-lines.ts
@@ -0,0 +1,10 @@
+export function getLines(contents: string, range?: number[]) {
+  if (!range) {
+    return '';
+  }
+
+  const lines = contents.split('\n');
+  const editableLines =
+    range[1] <= range[0] ? [] : lines.slice(range[0], range[1] - 1);
+  return editableLines.join('\n');
+}
diff --git a/utils/validate.js b/utils/validate.js
deleted file mode 100644
index dd888a96885..00000000000
--- a/utils/validate.js
+++ /dev/null
@@ -1,32 +0,0 @@
-const invalidCharError = {
-  valid: false,
-  error: 'contains invalid characters'
-};
-const validationSuccess = { valid: true, error: null };
-const usernameTooShort = { valid: false, error: 'is too short' };
-const usernameIsHttpStatusCode = {
-  valid: false,
-  error: 'is a reserved error code'
-};
-
-const isNumeric = num => !isNaN(num);
-const validCharsRE = /^[a-zA-Z0-9\-_+]*$/;
-const isHttpStatusCode = str =>
-  isNumeric(str) && parseInt(str, 10) >= 100 && parseInt(str, 10) <= 599;
-
-const isValidUsername = str => {
-  if (!validCharsRE.test(str)) return invalidCharError;
-  if (str.length < 3) return usernameTooShort;
-  if (isHttpStatusCode(str)) return usernameIsHttpStatusCode;
-  return validationSuccess;
-};
-
-module.exports = {
-  isNumeric,
-  isHttpStatusCode,
-  isValidUsername,
-  validationSuccess,
-  usernameTooShort,
-  usernameIsHttpStatusCode,
-  invalidCharError
-};
diff --git a/utils/validate.test.js b/utils/validate.test.ts
similarity index 90%
rename from utils/validate.test.js
rename to utils/validate.test.ts
index 24ce35e766a..9ed026e2ef5 100644
--- a/utils/validate.test.js
+++ b/utils/validate.test.ts
@@ -1,12 +1,12 @@
-const {
+import {
   isValidUsername,
   usernameTooShort,
   validationSuccess,
   usernameIsHttpStatusCode,
   invalidCharError
-} = require('./validate');
+} from './validate';
 
-function inRange(num, range) {
+function inRange(num: number, range: number[]) {
   return num >= range[0] && num <= range[1];
 }
 
@@ -46,8 +46,8 @@ describe('isValidUsername', () => {
     const finalCode = 127;
 
     for (let code = 0; code <= finalCode; code++) {
-      let char = String.fromCharCode(code);
-      let expected = invalidCharError;
+      const char = String.fromCharCode(code);
+      let expected: { valid: boolean; error: null | string } = invalidCharError;
       if (allowedCharactersList.includes(char)) expected = validationSuccess;
       if (inRange(code, numbers)) expected = validationSuccess;
       if (inRange(code, upperCase)) expected = validationSuccess;
diff --git a/utils/validate.ts b/utils/validate.ts
new file mode 100644
index 00000000000..9f5ebf3e6af
--- /dev/null
+++ b/utils/validate.ts
@@ -0,0 +1,23 @@
+export const invalidCharError = {
+  valid: false,
+  error: 'contains invalid characters'
+};
+export const validationSuccess = { valid: true, error: null };
+export const usernameTooShort = { valid: false, error: 'is too short' };
+export const usernameIsHttpStatusCode = {
+  valid: false,
+  error: 'is a reserved error code'
+};
+
+const validCharsRE = /^[a-zA-Z0-9\-_+]*$/;
+export const isHttpStatusCode = (str: string) => {
+  const output = parseInt(str, 10);
+  return !isNaN(output) && output >= 100 && output <= 599;
+};
+
+export const isValidUsername = (str: string) => {
+  if (!validCharsRE.test(str)) return invalidCharError;
+  if (str.length < 3) return usernameTooShort;
+  if (isHttpStatusCode(str)) return usernameIsHttpStatusCode;
+  return validationSuccess;
+};