Update TypeScript

src/main.ts

@@ -25,7 +25,8 @@ async function main(): Promise<void> {
     const testReporter = new TestReporter()
     await testReporter.run()
   } catch (error) {
-    core.setFailed(error.message)
+    if (error instanceof Error) core.setFailed(error)
+    else core.setFailed(JSON.stringify(error))
   }
 }
 

src/parsers/dart-json/dart-json-parser.ts

@@ -92,7 +92,8 @@ export class DartJsonParser implements TestParser {
         try {
           return JSON.parse(str)
         } catch (e) {
-          const col = e.columnNumber !== undefined ? `:${e.columnNumber}` : ''
+          const errWithCol = e as {columnNumber?: number}
+          const col = errWithCol.columnNumber !== undefined ? `:${errWithCol.columnNumber}` : ''
           throw new Error(`Invalid JSON at ${path}:${i + 1}${col}\n\n${e}`)
         }
       })