diff --git a/lint-staged.config.cjs b/lint-staged.config.cjs
index 698942d..86cf450 100644
--- a/lint-staged.config.cjs
+++ b/lint-staged.config.cjs
@@ -1,4 +1,4 @@
 module.exports = {
-	'*.{js,cjs,mjs,jsx,ts,tsx}': ['prettier --write', 'eslint --fix'],
+	'*.{js,cjs,mjs,jsx,ts,tsx}': ['prettier --write', 'eslint --fix', () => 'npm run types:check'],
 	'*.{md,html,css}': ['prettier --write'],
 };
diff --git a/package.json b/package.json
index bbeddab..8de2f42 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
 		"format:fix": "prettier --write .",
 		"prepare": "npx husky install",
 		"types": "tsc --build --pretty",
-		"types:check": "tsc --pretty -p tsconfig.checkOnly.json",
+		"types:check": "tsc --pretty",
 		"prepublishOnly": "npm run types",
 		"release": "npx semantic-release",
 		"reset": "rm -rf .apimockrc && rm -rf .api-mock-runner",
diff --git a/src/helpers/colours.js b/src/helpers/colours.js
index 5e702c0..196571d 100644
--- a/src/helpers/colours.js
+++ b/src/helpers/colours.js
@@ -4,11 +4,11 @@
  * @param {string} color - The desired color to paint the text.
  * @returns {string} - The painted text.
  */
-function paintText(text, color) {
-	return color + text + colours.reset;
+export function paintText(text, color) {
+	return `${color}${text}${colours.reset}`;
 }
 
-const colours = {
+export const colours = Object.freeze({
 	reset: '\x1b[0m',
 	bright: '\x1b[1m',
 	dim: '\x1b[2m',
@@ -40,5 +40,4 @@ const colours = {
 		gray: '\x1b[100m',
 		crimson: '\x1b[48m',
 	},
-};
-export { colours, paintText };
+});
diff --git a/src/services/utils.js b/src/services/utils.js
index 322ddce..896d3d7 100644
--- a/src/services/utils.js
+++ b/src/services/utils.js
@@ -79,10 +79,10 @@ export class MockRunnerError extends Error {
 				type = colours.fg.cyan;
 		}
 		Logger.error(
-			`Error of level ${paintText(this.level, type)}, type ${paintText(this.code, colours.fg.gray)} over ${paintText(
-				this.emitter,
-				colours.fg.blue
-			)}`
+			`Error of level ${paintText(this.level.toString(), type)}, type ${paintText(
+				this.code.toString(),
+				colours.fg.gray
+			)} over ${paintText(this.emitter, colours.fg.blue)}`
 		);
 		Logger.info(`${this.stack}`);
 	}
diff --git a/tsconfig.json b/tsconfig.json
index e983a06..739bf74 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -2,7 +2,7 @@
 	"extends": "@os3/tsconfig",
 	"compilerOptions": {
 		"outDir": "./dist-types",
-		"rootDir": "."
+		"rootDir": "./src"
 	},
 	"include": ["src"],
 	"exclude": ["dist-types", "node_modules", "test"]