From e7690b966a69255d2daa9895912cbe4aebc4e2e0 Mon Sep 17 00:00:00 2001
From: Andrew Bradley <cspotcode@gmail.com>
Date: Sat, 14 Dec 2019 00:28:22 -0500
Subject: [PATCH] Revert "Remove ability to specify "requires" in tsconfig"

This reverts commit 700a90fb483df86753c0da9d76bd76ca4af73e6c.
---
 src/bin.ts   |  4 +++-
 src/index.ts | 12 +++++++++++-
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/src/bin.ts b/src/bin.ts
index 38523a9dd..976234114 100644
--- a/src/bin.ts
+++ b/src/bin.ts
@@ -87,7 +87,7 @@ export function main (argv: string[]) {
     '--help': help = false,
     '--script-mode': scriptMode = false,
     '--version': version = 0,
-    '--require': requires = [],
+    '--require': argsRequire = [],
     '--eval': code = undefined,
     '--print': print = false,
     '--interactive': interactive = false,
@@ -190,6 +190,8 @@ export function main (argv: string[]) {
       : undefined
   })
 
+  const requires = argsRequire.length !== 0 ? argsRequire : service.options.requires || []
+
   // Output project information.
   if (version >= 2) {
     console.log(`ts-node v${VERSION}`)
diff --git a/src/index.ts b/src/index.ts
index b0346bb94..8891351a3 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -166,7 +166,9 @@ export interface TsConfigOptions
     | 'skipProject'
     | 'project'
     | 'dir'
-  > {}
+  > {
+  requires?: Array<string>
+}
 
 /**
  * Like Object.assign or splatting, but never overwrites with `undefined`.
@@ -789,6 +791,14 @@ function readConfig (
     useCaseSensitiveFileNames: ts.sys.useCaseSensitiveFileNames
   }, basePath, undefined, configFileName))
 
+  if (tsconfigOptions.requires) {
+    // Relative paths are relative to the tsconfig's parent directory, not the `dir` option
+    tsconfigOptions.requires = tsconfigOptions.requires.map((path: string) => {
+      if (path.startsWith('.')) return resolve(configFileName!, '..', path)
+      return path
+    })
+  }
+
   return { config: fixedConfig, options: tsconfigOptions }
 }