Pass Custom Parameters from webchat control to bot framework

Question

So, I\'m currently using this:

Answer 1

The other answer provided is helpful but it overwrites channelData. For others finding this answer and just wanting to send custom parameters, this will be helpful:

const originalDirectline = props.webchat.createDirectLine({
    token,
})

const directLine = Object.assign({}, originalDirectline, {
    postActivity: (activity: any) => {
        const newActivity = Object.assign({}, activity)
        newActivity.customParam = "custom value"
        return originalDirectline.postActivity(newActivity)
    }
})