function throwIfTrue(param: boolean) {
    try {
        if (param)
            throw new Error("test exception")
}
    catch (e) {
        console.log("  -catch")
}
    finally {
        console.log("  -finally")
    }
}

console.log("with exception:")
throwIfTrue(true)
//printed: "catch" and "finally"

console.log("\nwithout exception:")
throwIfTrue(false)
//printed only "finally"