CAPL to EcuBus-Pro Script (TypeScript)
In the automotive testing and diagnostics domain, CAPL (CANoe Programming Language) has long been an important tool for developing test automation scripts. It boasts powerful capabilities and a mature user base within the Vector CANoe ecosystem. However, as test scenarios diversify, cross-platform requirements increase, and the demand for greater flexibility and maintainability grows, is there an alternative solution?
EcuBus-Pro’s answer is to write scripts with TypeScript. EcuBus-Pro scripts use TypeScript as the development language and embrace modern software engineering practices. Compared with CAPL, TypeScript offers a richer ecosystem, greater extensibility, and native compatibility with DevOps workflows.
EcuBus-Pro Script IntelliSense
Because EcuBus-Pro scripts use TypeScript as the development language, you get type-based IntelliSense provided by the TypeScript type system.

CAPL vs EcuBus-Pro Script Syntax Comparison
INFO
Continuously updated. For more script APIs, see the API
| Feature | CAPL Example | EcuBus-Pro Script Example (TypeScript) |
|---|---|---|
| Type checking | Weak typing, no compile-time checks | Strong typing, IDE hints + compile-time checks |
| Libraries & extensions | Built into the Vector environment | NPM ecosystem with abundant third-party libraries |
| Variable declaration | int counter = 0; | let counter: number = 0; |
| Print logs | write("Hello CAPL"); | console.log("Hello EcuBus-Pro"); |
| Message receive event | on message CAN1.MyMsg{ write("Received");} | Util.OnCan(0x1, (msg) => { console.log("Received");}); |
| Event callback | on key 'a' { ... } | Util.OnKey('a', () => { ... }); |
| Variable watch | on envVar EnvChecksumError { ... } | Util.OnVar('EnvChecksumError', () => { ... }); |
Examples
Examples are continuously being improved; contributions are welcome.