From 4e27b9b83a0ee5dbc84464def58d9d16ef3d91f2 Mon Sep 17 00:00:00 2001
From: Spencer Tuft <stuft2@protonmail.com>
Date: Fri, 20 Sep 2024 01:04:27 -0600
Subject: [PATCH] feat: add support for tsimp (#410)

---
 .gitignore                       |  3 +++
 lib/runtime.js                   |  9 ++++++++-
 package.json                     |  4 +++-
 scripts/unit-typescript-tsimp.js | 18 ++++++++++++++++++
 tsconfig.tsimp.json              |  7 +++++++
 5 files changed, 39 insertions(+), 2 deletions(-)
 create mode 100644 scripts/unit-typescript-tsimp.js
 create mode 100644 tsconfig.tsimp.json

diff --git a/.gitignore b/.gitignore
index 2b6aed4e..8e19263a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -150,3 +150,6 @@ yarn.lock
 
 #tap files
 .tap/
+
+# tsimp cache
+.tsimp/
diff --git a/lib/runtime.js b/lib/runtime.js
index ed3623f2..0dd3cd5a 100644
--- a/lib/runtime.js
+++ b/lib/runtime.js
@@ -98,6 +98,12 @@ Object.defineProperties(runtime, {
       return cache.tsx
     }
   },
+  tsimp: {
+    get () {
+      cache.tsimp ??= checkProcessArgv('tsimp/import')
+      return cache.tsimp
+    }
+  },
   supportTypeScript: {
     get () {
       cache.supportTypeScript ??= (
@@ -109,7 +115,8 @@ Object.defineProperties(runtime, {
         runtime.swc ||
         runtime.tsm ||
         runtime.tsx ||
-        runtime.esbuild
+        runtime.esbuild ||
+        runtime.tsimp
       )
       return cache.supportTypeScript
     }
diff --git a/package.json b/package.json
index 59a8c14d..151b92df 100644
--- a/package.json
+++ b/package.json
@@ -15,6 +15,7 @@
     "typescript:swc-node-register": "node scripts/unit-typescript-swc-node-register.js",
     "typescript:tsm": "node scripts/unit-typescript-tsm.js",
     "typescript:tsx": "node scripts/unit-typescript-tsx.js",
+    "typescript:tsimp": "node scripts/unit-typescript-tsimp.js",
     "typescript:esbuild": "node scripts/unit-typescript-esbuild.js",
     "typescript:vitest": "vitest run",
     "typescript:vitest:dev": "vitest",
@@ -62,9 +63,10 @@
     "ts-node": "^10.9.2",
     "ts-node-dev": "^2.0.0",
     "tsd": "^0.31.1",
+    "tsimp": "^2.0.11",
     "tsm": "^2.3.0",
     "tsx": "^4.15.7",
-    "typescript": "^5.4.5",
+    "typescript": "5.5",
     "vite": "^5.2.12",
     "vitest": "^2.0.3"
   },
diff --git a/scripts/unit-typescript-tsimp.js b/scripts/unit-typescript-tsimp.js
new file mode 100644
index 00000000..9a880c93
--- /dev/null
+++ b/scripts/unit-typescript-tsimp.js
@@ -0,0 +1,18 @@
+'use strict'
+
+const { exec } = require('node:child_process')
+
+const args = [
+  'TSIMP_PROJECT=tsconfig.tsimp.json',
+  'node',
+  '--import=tsimp/import',
+  'test/typescript/basic.ts'
+]
+
+const child = exec(args.join(' '), {
+  shell: true
+})
+
+child.stdout.pipe(process.stdout)
+child.stderr.pipe(process.stderr)
+child.once('close', process.exit)
diff --git a/tsconfig.tsimp.json b/tsconfig.tsimp.json
new file mode 100644
index 00000000..fa90c567
--- /dev/null
+++ b/tsconfig.tsimp.json
@@ -0,0 +1,7 @@
+{
+  "compilerOptions": {
+    "noEmit": true,
+    "strict": true
+  },
+  "include": ["test/typescript/**/*.ts"]
+}