diff --git a/package.json b/package.json
index 3e62668..120f17b 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,7 @@
   "scripts": {
     "build": "rm -rf lib && tsc",
     "format": "prettier --write .",
-    "lint": "eslint .",
+    "lint": "eslint src",
     "fixtures:type-check": " tsc -p ./fixtures/tsconfig.json",
     "fixtures:lint-css": "stylelint './fixtures/**/*.css'",
     "test": "npm run build && node --test && npm run fixtures:type-check && npm run fixtures:lint-css",
diff --git a/src/bin.ts b/src/bin.ts
index 755e6c7..a210b4e 100755
--- a/src/bin.ts
+++ b/src/bin.ts
@@ -12,6 +12,24 @@ import {
   safeCreateFile,
 } from './writer.js'
 
+function handleMistFileUpdate(cwd: string, filename: string) {
+  safeCreateFile(path.join(cwd, filename))
+}
+
+function handleMistFileDelete(cwd: string, filename: string) {
+  const genFilename = mistToGenFilename(filename)
+  if (fs.existsSync(path.join(cwd, genFilename))) {
+    fs.unlinkSync(path.join(cwd, genFilename))
+  }
+}
+
+function handleGenFileWithoutMistFile(cwd: string, filename: string) {
+  const mistFilename = genToMistFilename(filename)
+  if (!fs.existsSync(path.join(cwd, mistFilename))) {
+    fs.unlinkSync(path.join(cwd, filename))
+  }
+}
+
 const { values, positionals } = parseArgs({
   options: {
     watch: {
@@ -44,35 +62,19 @@ if (fs.statSync(fileOrDir).isFile()) {
   const mistFiles = await globby(mistGlob, { cwd })
   const genFiles = await globby(genGlob, { cwd })
 
-  function handleMistFileUpdate(filename: string) {
-    safeCreateFile(path.join(cwd, filename))
-  }
-
-  function handleMistFileDelete(filename: string) {
-    const genFilename = mistToGenFilename(filename)
-    if (fs.existsSync(path.join(cwd, genFilename))) {
-      fs.unlinkSync(path.join(cwd, genFilename))
-    }
-  }
-
-  function handleGenFileWithoutMistFile(filename: string) {
-    const mistFilename = genToMistFilename(filename)
-    if (!fs.existsSync(path.join(cwd, mistFilename))) {
-      fs.unlinkSync(path.join(cwd, filename))
-    }
-  }
-
   // Watch files
   if (values.watch) {
     chokidar
       .watch(mistGlob, { cwd })
-      .on('change', handleMistFileUpdate)
-      .on('unlink', handleMistFileDelete)
+      .on('change', (filename) => handleMistFileUpdate(cwd, filename))
+      .on('unlink', (filename) => handleMistFileDelete(cwd, filename))
   }
 
   // Re-generate all files
-  mistFiles.forEach(handleMistFileUpdate)
+  mistFiles.forEach((filename) => handleMistFileUpdate(cwd, filename))
 
   // Clean up generated files without a corresponding mist file
-  genFiles.forEach((genFilename) => handleGenFileWithoutMistFile(genFilename))
+  genFiles.forEach((genFilename) =>
+    handleGenFileWithoutMistFile(cwd, genFilename),
+  )
 }
diff --git a/src/parser.test.ts b/src/parser.test.ts
index 8712ad2..a8d66ee 100644
--- a/src/parser.test.ts
+++ b/src/parser.test.ts
@@ -2,19 +2,19 @@ import assert from 'node:assert'
 import fs from 'node:fs'
 import test from 'node:test'
 
-import { type Components, parseInput, camelCase, pascalCase } from './parser.js'
+import { camelCase, type Components, parseInput, pascalCase } from './parser.js'
 
 // Fixtures
 const mistCSS: string = fs.readFileSync('fixtures/Foo.mist.css', 'utf-8')
 
-test('toCamelCase', () => {
+void test('toCamelCase', () => {
   const arr = ['foo', 'foo-bar', 'f', 'f-b']
   const actual = arr.map(camelCase)
   const expected = ['foo', 'fooBar', 'f', 'fB']
   assert.deepStrictEqual(actual, expected)
 })
 
-test('toPascalCase', () => {
+void test('toPascalCase', () => {
   const arr = ['foo', 'foo-bar', 'f', 'f-b']
   const actual = arr.map(pascalCase)
   const expected = ['Foo', 'FooBar', 'F', 'FB']
diff --git a/src/parser.ts b/src/parser.ts
index b5415bf..be5af2d 100644
--- a/src/parser.ts
+++ b/src/parser.ts
@@ -3,7 +3,7 @@ import { compile, Element } from 'stylis'
 // Components in a MistCSS file
 export type Components = Record<string, Component>
 
-export type Component = {
+export interface Component {
   tag: string
   data: Record<string, string[] | boolean>
   className?: string
@@ -16,7 +16,7 @@ const booleanDataAttributeRegex = /\[data-(?<attribute>[a-z-]+)(?=\])/g
 const pascalCaseRegex = /(?:^|-)([a-z])/g
 
 export function pascalCase(str: string): string {
-  return str.replace(pascalCaseRegex, (_, g) => g.toUpperCase())
+  return str.replace(pascalCaseRegex, (_, g: string) => g.toUpperCase())
 }
 
 const camelCaseRegex = /-([a-z])/g
diff --git a/src/renderer.test.ts b/src/renderer.test.ts
index df53a27..9a34520 100644
--- a/src/renderer.test.ts
+++ b/src/renderer.test.ts
@@ -1,6 +1,7 @@
 import assert from 'node:assert'
 import fs from 'node:fs'
 import test from 'node:test'
+
 import { Components, parseInput } from './parser.js'
 import { render } from './renderer.js'
 
diff --git a/src/renderer.ts b/src/renderer.ts
index c8a5669..c5fd12e 100644
--- a/src/renderer.ts
+++ b/src/renderer.ts
@@ -1,4 +1,4 @@
-import { Components, Component } from './parser.js'
+import { Component,Components } from './parser.js'
 
 function renderProps(component: Component): string {
   return Object.entries({
diff --git a/src/writer.test.ts b/src/writer.test.ts
index 6d9a95f..d7c717c 100644
--- a/src/writer.test.ts
+++ b/src/writer.test.ts
@@ -1,28 +1,28 @@
 import assert from 'node:assert'
 import fs from 'node:fs'
-import test from 'node:test'
 import os from 'node:os'
+import path from 'node:path'
+import test from 'node:test'
 
 import {
   genToMistFilename,
   mistToGenFilename,
   safeCreateFile,
 } from './writer.js'
-import path from 'node:path'
 
-test('genToMistFilename', () => {
+void test('genToMistFilename', () => {
   const actual = genToMistFilename('Foo.mist.tsx')
   const expected = 'Foo.mist.css'
   assert.strictEqual(actual, expected)
 })
 
-test('mistToGenFilename', () => {
+void test('mistToGenFilename', () => {
   const actual = mistToGenFilename('Foo.mist.css')
   const expected = 'Foo.mist.tsx'
   assert.strictEqual(actual, expected)
 })
 
-test('safeCreateFile', () => {
+void test('safeCreateFile', () => {
   const dir = os.tmpdir()
   const mistCSS = path.join(dir, 'Foo.mist.css')
   const mistTSX = path.join(dir, 'Foo.mist.tsx')
diff --git a/src/writer.ts b/src/writer.ts
index 1b9f57b..23f363b 100644
--- a/src/writer.ts
+++ b/src/writer.ts
@@ -1,5 +1,6 @@
 import fs from 'node:fs'
 import path from 'node:path'
+
 import { parseInput } from './parser.js'
 import { render } from './renderer.js'