Error saving output on windows with full file paths instead of relative

[jarrodls]

Description

When trying to generate types on Windows and using a full filepath as the output it will error. It does not have the same issue for the input path. If you change the output path to something like ./output.d.ts or ../output.d.ts it seems to handle those fine.

The issue seems to be here where you are trying to create a new URL based on the output file but trying to prefix it with . which will error when given a full path instead of a relative path.

openapi-typescript/packages/openapi-typescript/bin/cli.js

Lines 205 to 207 in 45cea6b

	const outFile = new URL(flags.output, CWD);
	fs.mkdirSync(new URL(".", outFile), { recursive: true });
	fs.writeFileSync(outFile, result, "utf8");

 npx openapi-typescript C:\Users\User\Desktop\swagger.json -o C:\Users\User\Desktop\output.d.ts
✨ openapi-typescript 7.0.2
node:internal/url:797
    this.#updateContext(bindingUrl.parse(input, base));
                                   ^

TypeError: Invalid URL
    at new URL (node:internal/url:797:36)
    at main (file:https:///O:/.packageCache/npm/_npx/21d31b7563e6adbc/node_modules/openapi-typescript/bin/cli.js:206:20) {
  code: 'ERR_INVALID_URL',
  input: '.',
  base: 'c:\\Users\\User\\Desktop\\output.d.ts'
}

Name	Version
openapi-typescript	7.0.2
Node.js	20.15.0
OS + version	Windows 11

Reproduction

Try to generate a types file with a full filepath on Windows such as C:\Users\User\Desktop\output.d.ts

 npx openapi-typescript C:\Users\User\Desktop\swagger.json -o C:\Users\User\Desktop\output.d.ts

Expected result

It shouldn't error and should support the path like any other

Checklist

• My OpenAPI schema passes the Redocly validator (npx @redocly/cli@latest lint)
• I’m willing to open a PR (see CONTRIBUTING.md)