buildJsonObject sets the Number and Boolean to null

[blackwiz4rd]

Describe the bug

The function below sets Boolean and Numbers to null when values are put in the json object.

To Reproduce

fun Intent.convertToJsonObject() = buildJsonObject {
    extras?.let { extras ->
        for (key in extras.keySet()) {
            SuccessData.entries.find { it.value == key }?.let { entry ->
                when (entry.type) {
                    // numbers
                    Byte -> {
                        [email protected](key, extras.getByte(key))
                    }

                    Short -> {
                        [email protected](key, extras.getShort(key))
                    }

                    Int -> {
                        [email protected](key, extras.getInt(key))
                    }

                    Long -> {
                        [email protected](key, extras.getLong(key))
                    }

                    Boolean -> {
                        [email protected](key, extras.getBoolean(key, false))
                    }

                    else -> {
                        [email protected](key, extras.getString(key))
                    }
                }
            } ?: run {
                [email protected](key, extras.getString(key))
            }
        }
    }
}

Expected behavior The JsonObject should contain non null Numbers and Booleans.

Environment

• Kotlin version: 1.9.22
• Library version: 1.6.0
• Kotlin platforms: Android
• Gradle version: 8.3

[sandwwraith]

Can you elaborate on what exactly is problematic here? Are you talking about the ability to write this?

 buildJsonObject {
        val nullBool: Boolean? = null
        put("key", nullBool)
    }

It is allowed by design, since it is valid for a json object to contain null values. The builder above corresponds to {"key": null} json.