fix: #93 repair undefined values by replacing them with null

josdejong · Jun 13, 2023 · af348d7 · af348d7
1 parent be7f4de
commit af348d7
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Showing 2 changed files with 7 additions and 1 deletion.
diff --git a/src/jsonrepair.test.ts b/src/jsonrepair.test.ts
@@ -146,6 +146,12 @@ describe('jsonRepair', () => {
       strictEqual(jsonrepair('{"a":'), '{"a":null}')
     })
 
+    it('should repair undefined values', () => {
+      strictEqual(jsonrepair('{"a":undefined}'), '{"a":null}')
+      strictEqual(jsonrepair('[undefined]'), '[null]')
+      strictEqual(jsonrepair('undefined'), 'null')
+    })
+
     it('should escape unescaped control characters', () => {
       strictEqual(jsonrepair('"hello\bworld"'), '"hello\\bworld"')
       strictEqual(jsonrepair('"hello\fworld"'), '"hello\\fworld"')

diff --git a/src/jsonrepair.ts b/src/jsonrepair.ts
@@ -596,7 +596,7 @@ export function jsonrepair(text: string): string {
         }
 
         const symbol = text.slice(start, i)
-        output += JSON.stringify(symbol)
+        output += symbol === 'undefined' ? 'null' : JSON.stringify(symbol)
 
         return true
       }