Simplify mkdirP implementation (#781)

Co-authored-by: Linus Unnebäck <linus@folkdatorn.se>

packages/io/src/io-util.ts

@@ -1,4 +1,3 @@
-import {ok} from 'assert'
 import * as fs from 'fs'
 import * as path from 'path'
 
@@ -59,52 +58,6 @@ export function isRooted(p: string): boolean {
   return p.startsWith('/')
 }
 
-/**
- * Recursively create a directory at `fsPath`.
- *
- * This implementation is optimistic, meaning it attempts to create the full
- * path first, and backs up the path stack from there.
- *
- * @param fsPath The path to create
- * @param maxDepth The maximum recursion depth
- * @param depth The current recursion depth
- */
-export async function mkdirP(
-  fsPath: string,
-  maxDepth: number = 1000,
-  depth: number = 1
-): Promise<void> {
-  ok(fsPath, 'a path argument must be provided')
-
-  fsPath = path.resolve(fsPath)
-
-  if (depth >= maxDepth) return mkdir(fsPath)
-
-  try {
-    await mkdir(fsPath)
-    return
-  } catch (err) {
-    switch (err.code) {
-      case 'ENOENT': {
-        await mkdirP(path.dirname(fsPath), maxDepth, depth + 1)
-        await mkdir(fsPath)
-        return
-      }
-      default: {
-        let stats: fs.Stats
-
-        try {
-          stats = await stat(fsPath)
-        } catch (err2) {
-          throw err
-        }
-
-        if (!stats.isDirectory()) throw err
-      }
-    }
-  }
-}
-
 /**
  * Best effort attempt to determine whether a file exists and is executable.
  * @param filePath    file path to check