@segment/analytics-node

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# npm
npm install @segment/analytics-node
# yarn
yarn add @segment/analytics-node
# pnpm
pnpm install @segment/analytics-node

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import { Analytics } from '@segment/analytics-node'
// or, if you use require:
const { Analytics } = require('@segment/analytics-node')

// instantiation
const analytics = new Analytics({ writeKey: '<MY_WRITE_KEY>' })

app.post('/login', (req, res) => {
   analytics.identify({
      userId: req.body.userId,
      previousId: req.body.previousId
  })
  res.sendStatus(200)
})

app.post('/cart', (req, res) => {
  analytics.track({
    userId: req.body.userId,
    event: 'Add to cart',
    properties: { productId: '123456' }
  })
   res.sendStatus(201)
});