up playground code

Author: zardoy

playground.ts

@@ -2,7 +2,13 @@
 import ts from 'typescript/lib/tsserverlibrary'
 import { createLanguageService } from './typescript/src/dummyLanguageService'
 
-let testString = 'const a: {/** @default test */a: 5} | {b: 6, /** yes */a: 9} = null as any;\nif ("||" in a) {}'
+globalThis.ts = ts
+
+let testString = /* ts */ `
+const b = () => 5
+const a = b()|| as
+new Promise()
+`
 const replacement = '||'
 const pos = testString.indexOf(replacement)
 testString = testString.slice(0, pos) + testString.slice(pos + replacement.length)
@@ -16,7 +22,7 @@ const sourceFile = program?.getSourceFile(filePath)
 if (!program || !sourceFile) throw new Error('No source file')
 
 const typeChecker = program.getTypeChecker()
-const node = findChildContainingPosition(ts, sourceFile, pos)
+let node = findChildContainingPosition(ts, sourceFile, pos)
 if (!node) throw new Error('No node')
 const type = typeChecker.getTypeAtLocation(node)