From 6cd5f8816f3c2deb34908751e101fd4cb54aef4c Mon Sep 17 00:00:00 2001
From: Daniel Roe <daniel@roe.dev>
Date: Wed, 30 Jun 2021 14:55:11 +0100
Subject: [PATCH] fix(kit): make `resolvePath` case-sensitive (#291)

---
 packages/kit/src/utils/resolve.ts | 20 ++++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

diff --git a/packages/kit/src/utils/resolve.ts b/packages/kit/src/utils/resolve.ts
index a38baea35e..bef872216f 100644
--- a/packages/kit/src/utils/resolve.ts
+++ b/packages/kit/src/utils/resolve.ts
@@ -1,5 +1,5 @@
-import { existsSync, lstatSync } from 'fs'
-import { resolve, join } from 'upath'
+import { existsSync, lstatSync, readdirSync } from 'fs'
+import { basename, dirname, resolve, join } from 'upath'
 import globby from 'globby'
 
 export interface ResolveOptions {
@@ -20,7 +20,7 @@ export interface ResolveOptions {
 
 function resolvePath (path: string, opts: ResolveOptions = {}) {
   // Fast return if the path exists
-  if (existsSync(path)) {
+  if (existsSyncSensitive(path)) {
     return path
   }
 
@@ -34,9 +34,11 @@ function resolvePath (path: string, opts: ResolveOptions = {}) {
   // Resolve relative to base or cwd
   resolvedPath = resolve(opts.base || '.', resolvedPath)
 
+  const resolvedPathFiles = readdirSync(dirname(resolvedPath))
+
   // Check if resolvedPath is a file
   let isDirectory = false
-  if (existsSync(resolvedPath)) {
+  if (existsSyncSensitive(resolvedPath, resolvedPathFiles)) {
     isDirectory = lstatSync(resolvedPath).isDirectory()
     if (!isDirectory) {
       return resolvedPath
@@ -47,12 +49,12 @@ function resolvePath (path: string, opts: ResolveOptions = {}) {
   for (const ext of opts.extensions) {
     // resolvedPath.[ext]
     const resolvedPathwithExt = resolvedPath + ext
-    if (!isDirectory && existsSync(resolvedPathwithExt)) {
+    if (!isDirectory && existsSyncSensitive(resolvedPathwithExt, resolvedPathFiles)) {
       return resolvedPathwithExt
     }
     // resolvedPath/index.[ext]
     const resolvedPathwithIndex = join(resolvedPath, 'index' + ext)
-    if (isDirectory && existsSync(resolvedPathwithIndex)) {
+    if (isDirectory && existsSyncSensitive(resolvedPathwithIndex)) {
       return resolvedPathwithIndex
     }
   }
@@ -66,6 +68,12 @@ function resolvePath (path: string, opts: ResolveOptions = {}) {
   throw new Error(`Cannot resolve "${path}" from "${resolvedPath}"`)
 }
 
+function existsSyncSensitive (path: string, files?: string[]) {
+  if (!existsSync(path)) { return false }
+  const _files = files || readdirSync(dirname(path))
+  return _files.includes(basename(path))
+}
+
 /**
  * Return a path with any relevant aliases resolved.
  *