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async/await example
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// external
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import {} from 'https://unpkg.com/jquery'
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// external
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import {fromEvent} from 'https://unpkg.com/baconjs?module'
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const upEl = globalThis.document.createElement('button')
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const downEl = globalThis.document.createElement('button')
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const counterEl = globalThis.document.createElement('div')
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globalThis.document.body.appendChild(upEl)
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globalThis.document.body.appendChild(downEl)
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globalThis.document.body.appendChild(counterEl)
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const up = fromEvent(upEl, 'click');
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const down = fromEvent(downEl, 'click');
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const counter =
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// map up to 1, down to -1
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up.map(1).merge(down.map(-1))
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// accumulate sum
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.scan(0, (x,y) => x + y);
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// assign observable value to jQuery property text
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counter.onValue(text => Object.assign(counterEl, {innerText: text}));
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14
docs/examples/ethers/index.js
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14
docs/examples/ethers/index.js
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import {ethers} from 'https://unpkg.com/ethers/dist/ethers.esm.js'
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const URL = 'https://ethereum-goerli-rpc.allthatnode.com'
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const p = ethers.getDefaultProvider(URL)
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const latest = await p.getBlock()
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const txs = await Promise.all(latest.transactions.map(t =>
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p.getTransactionReceipt(t)
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))
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const totalGas = txs.reduce((gas,tx) =>
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gas.add(tx.gasUsed), ethers.BigNumber.from(0))
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