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const BlockTracker = require('eth-block-tracker')
/**
* Creates a block tracker that sends platform events on success and failure
*/
module.exports = function createBlockTracker (args, platform) {
const blockTracker = new BlockTracker(args)
blockTracker.on('latest', () => {
if (platform && platform.sendMessage) {
platform.sendMessage({ action: 'ethereum-ping-success' })
}
})
blockTracker.on('error', () => {
if (platform && platform.sendMessage) {
platform.sendMessage({ action: 'ethereum-ping-error' })
}
})
return blockTracker
}
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