From 10147c3a00692b52c4c74b54fc6ce6ba9252b7fc Mon Sep 17 00:00:00 2001
From: Simon <simon.holthausen@accso.de>
Date: Mon, 14 Mar 2022 15:56:24 +0100
Subject: [PATCH] (feat) make it possible to pass additional file paths to
 emitDts

Needed when someone uses the svelte.JSX typings.
Closes #1405
---
 packages/svelte2tsx/index.d.ts     | 5 +++++
 packages/svelte2tsx/src/emitDts.ts | 2 ++
 2 files changed, 7 insertions(+)

diff --git a/packages/svelte2tsx/index.d.ts b/packages/svelte2tsx/index.d.ts
index 13b1b46ed..c97db72c7 100644
--- a/packages/svelte2tsx/index.d.ts
+++ b/packages/svelte2tsx/index.d.ts
@@ -78,6 +78,11 @@ export interface EmitDtsConfig {
      * Example: `require.resolve('svelte2tsx/svelte-shims.d.ts')`
      */
     svelteShimsPath: string;
+    /**
+     * Additional file paths that need to be present when doing the dts emit.
+     * Example: `[require.resolve('svelte2tsx/svelte-jsx.d.ts')]` for the Svelte HTML ambient type definitions
+     */
+    additionalPaths?: string[];
     /**
      * If you want to emit types only for part of your project,
      * then set this to the folder for which the types should be emitted.
diff --git a/packages/svelte2tsx/src/emitDts.ts b/packages/svelte2tsx/src/emitDts.ts
index bf092b1eb..6ddcecdfb 100644
--- a/packages/svelte2tsx/src/emitDts.ts
+++ b/packages/svelte2tsx/src/emitDts.ts
@@ -5,6 +5,7 @@ import { svelte2tsx } from './svelte2tsx';
 export interface EmitDtsConfig {
     declarationDir: string;
     svelteShimsPath: string;
+    additionalPaths?: string[];
     libRoot?: string;
 }
 
@@ -72,6 +73,7 @@ function loadTsconfig(config: EmitDtsConfig, svelteMap: SvelteMap) {
     // Add ambient functions so TS knows how to resolve its invocations in the
     // code output of svelte2tsx.
     filenames.push(config.svelteShimsPath);
+    filenames.push(...(config.additionalPaths || []));
 
     return {
         options: {