feat: show error if filename is longer than 255 chars

src/create.ts

@@ -1,5 +1,5 @@
 import type { LogOptions } from './types'
-import { join, parse } from 'path'
+import { join, parse } from 'node:path'
 import pc from 'picocolors'
 import {
 	createEmptyFile,
@@ -44,6 +44,11 @@ export const init = () => {
 
 		const parsed = parse(filenamePath)
 
+		if (filename.length > 255) {
+			error('Filename is too long!', logOptions)
+			return
+		}
+
 		if (dirExists(filename)) {
 			warn(`File ${pc.cyan(filename)} already exists`, logOptions)
 			return

src/utils/fs.ts

@@ -1,4 +1,4 @@
-import { existsSync, mkdirSync, rmSync, writeFileSync } from 'fs'
+import { existsSync, mkdirSync, rmSync, writeFileSync } from 'node:fs'
 
 export const ensureDir = (path: string) => {
 	mkdirSync(path, { recursive: true })

test/index.test.ts

@@ -1,6 +1,7 @@
 import type { SyncOptions } from 'execa'
 import { join, parse } from 'node:path'
 import { readdirSync } from 'node:fs'
+import { randomBytes } from 'crypto'
 import { afterAll, beforeAll, describe, expect, it, test } from 'vitest'
 import { execa } from 'execa'
 import pkgJson from '../package.json'
@@ -187,4 +188,12 @@ describe('creating files', () => {
 		expect(removeColors(stdout)).toContain(`${file} is not a valid filename`)
 		expect(dirExists(file)).toBe(false)
 	})
+
+	it('shows a proper error if the filename is too long', async () => {
+		const file = randomBytes(128).toString('hex') // each byte encoded to hex is 2 characters
+
+		const { stdout } = await run([file])
+		expect(removeColors(stdout)).toContain('Filename is too long!')
+		expect(dirExists(file)).toBe(false)
+	})
 })