Fix typo in helpers.ts (#45365)
Fix typo in helpers.ts (#45365)

funtions
Microsoft/TypeScript,Microsoft/TypeScript,weswigham/TypeScript,weswigham/TypeScript,SaschaNaz/TypeScript,SaschaNaz/TypeScript,kpreisser/TypeScript,microsoft/TypeScript,SaschaNaz/TypeScript,kpreisser/TypeScript,microsoft/TypeScript,kpreisser/TypeScript,SaschaNaz/TypeScript,weswigham/TypeScript,Microsoft/TypeScript,microsoft/TypeScript