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const mergeMiddleware = require('json-rpc-engine/src/mergeMiddleware')
const createAsyncMiddleware = require('json-rpc-engine/src/createAsyncMiddleware')
const createFetchMiddleware = require('eth-json-rpc-middleware/fetch')
const createBlockRefMiddleware = require('eth-json-rpc-middleware/block-ref')
const createBlockTrackerInspectorMiddleware = require('eth-json-rpc-middleware/block-tracker-inspector')
const providerFromMiddleware = require('eth-json-rpc-middleware/providerFromMiddleware')
const BlockTracker = require('eth-block-tracker')
module.exports = createLocalhostClient
function createLocalhostClient () {
const fetchMiddleware = createFetchMiddleware({ rpcUrl: 'http://localhost:8545/' })
const blockProvider = providerFromMiddleware(fetchMiddleware)
const blockTracker = new BlockTracker({ provider: blockProvider, pollingInterval: 1000 })
const networkMiddleware = mergeMiddleware([
createBlockRefMiddleware({ blockTracker }),
createBlockTrackerInspectorMiddleware({ blockTracker }),
fetchMiddleware,
])
return { networkMiddleware, blockTracker }
}
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