1import path from 'path'
2import type { absFileDirPath } from '../ptDirF.mts'
3import { throwIf } from '../sharedF/throwErrorF/throwIfF.mts'
4
5export const pathJoin = (...parts: string[]) => {
6  throwIf(() => parts.length <= 1, {parts})
7  return path.join(...parts) as absFileDirPath
8}
9
10export const pathDownJoin = (base: string, ...parts: string[]) => {
11  const joined = pathJoin(base, ...parts)
12
13  throwIf(() => !joined.startsWith(base), {base, parts})
14
15  return joined
16}
17