From 99ce9c0aca2f4cd62e23041b92291ac04e2c6407 Mon Sep 17 00:00:00 2001
From: joshwooding <12938082+joshwooding@users.noreply.github.com>
Date: Thu, 5 May 2022 01:13:44 +0100
Subject: [PATCH] fix: sourcesContent not being escaped

---
 src/index.ts   | 6 ++++--
 src/types.d.ts | 6 +++---
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/src/index.ts b/src/index.ts
index 1c3d38b..3f90cfc 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,4 +1,4 @@
-import type { SourceMap } from 'rollup';
+import type { ExistingRawSourceMap } from 'rollup';
 import { Plugin, TransformResult, createLogger } from 'vite';
 import { createInstrumenter } from 'istanbul-lib-instrument';
 import TestExclude from 'test-exclude';
@@ -27,7 +27,9 @@ const PLUGIN_NAME = 'vite:istanbul';
 const MODULE_PREFIX = '/@modules/';
 const NULL_STRING = '\0';
 
-function sanitizeSourceMap(sourceMap: SourceMap): SourceMap {
+function sanitizeSourceMap(sourceMap: ExistingRawSourceMap): ExistingRawSourceMap {
+  // delete sourcesContent since it is optional and if it contains process.env.NODE_ENV vite will try and replace it and break
+  delete sourceMap.sourcesContent;
   // JSON parse/stringify trick required for istanbul to accept the SourceMap
   return JSON.parse(JSON.stringify(sourceMap));
 }
diff --git a/src/types.d.ts b/src/types.d.ts
index 3fe6451..76566d8 100644
--- a/src/types.d.ts
+++ b/src/types.d.ts
@@ -1,8 +1,8 @@
 declare module 'istanbul-lib-instrument' {
-  import { SourceMap } from 'rollup';
+  import { ExistingRawSourceMap } from 'rollup';
   interface Instrumenter {
-    instrumentSync(code: string, filename: string, inputSourceMap?: SourceMap | undefined): string;
-    lastSourceMap(): SourceMap;
+    instrumentSync(code: string, filename: string, inputSourceMap?: ExistingRawSourceMap | undefined): string;
+    lastSourceMap(): ExistingRawSourceMap;
   }
 
   export function createInstrumenter(opts: {