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_section: Contributings and Hacking @<about-contrib> @priority<-90>
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_section: Contributions and Hacking @<about-contrib> @priority<-90>
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Pull requests are welcome, but please keep the following in mind:
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@ -93,7 +93,7 @@ _subsection: Adding Features @<about-contrib-feature>
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Contributing new features usually require a deeper understanding
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of the internal interactions with Ethers and its components, and
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generally requires a minor version bumpincludes anything w
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generally requires a minor version bump.
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When making any of the following changes, you must first open a
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[[link-discussion]] as the minor version will need to be bumped.
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@ -48,7 +48,7 @@ objects available and what they are responsible for, at a high level.
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_heading: Provider
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A [[Provider]] is a read-only connection to the blockchain, which allows
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querying the blockchain state, such as accout, block or transaction details,
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querying the blockchain state, such as account, block or transaction details,
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querying event logs or evaluating read-only code using call.
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If you are coming from Web3.js, you are used to a **Provider** offering
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@ -118,7 +118,7 @@ extension that injects objects into the ``window``, providing:
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- authenticated write access backed by a private key (a [[Signer]])
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When requesting access to the authenticated methods, such as
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sending a transaction or even requesting the private key addess,
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sending a transaction or even requesting the private key address,
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MetaMask will show a pop-up to the user asking for permission.
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_code: @lang<script>
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@ -172,7 +172,7 @@ _code: connecting to a JSON-RPC URL @lang<script>
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_subsection: User Interaction @<starting-display>
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All units in Ethereum tend to be integer values, since dealing with
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decimals and floating points can lead to inprecise and non-obvious
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decimals and floating points can lead to imprecise and non-obvious
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results when performing mathematic operations.
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As a result, the internal units used (e.g. wei) which are suited for
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@ -272,7 +272,7 @@ _subsection: Contracts @<starting-contracts>
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A **Contract** is a meta-class, which means that its definition
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its derived at run-time, based on the ABI it is passed, which then
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determined what mehods and properties are available on it.
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determined what methods and properties are available on it.
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_heading: Application Binary Interface (ABI)
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@ -291,7 +291,7 @@ Any methods or events that are not needed can be safely excluded.
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There are several common formats available to describe an ABI. The
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Solidity compiler usually dumps a JSON representation but when typing
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an ABI by hand it is often easier (and more readable) to use the
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human-readable ABI, which is just the Solidity signautre.
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human-readable ABI, which is just the Solidity signature.
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_code: simplified ERC-20 ABI @lang<script>
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abi = [
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@ -478,7 +478,7 @@ it. It can also be used to sign other forms of data, which are then able
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to be validated for other purposes.
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For example, signing **a message** can be used to prove ownership of an
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account which a website could use to authenicate a user and log them in.
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account which a website could use to authenticate a user and log them in.
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_code: @lang<javascript>
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@ -3,7 +3,7 @@ _section: Documentation @<about-home> @nav<Documentation>
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The ethers.js library aims to be a complete and compact library
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for interacting with the Ethereum Blockchain and its ecosystem.
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It is ofen used to create decentralized applications (dapps),
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It is often used to create decentralized applications (dapps),
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wallets (such as [[link-metamask]] and [[link-tally]]) and
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other tools and simple scripts that require reading and writing
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to the blockchain.
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@ -14,7 +14,7 @@ _subsection: About this documentation?
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These docs are still under construction, and are being expanded
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every day.
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Developers new to Ethers shoud be sure to read through the
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Developers new to Ethers should be sure to read through the
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[[getting-started]] section.
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And the [[about-api]] is available for drilling down into more details
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@ -34,7 +34,7 @@ link-infura-secret [link-infura-secret](https://infura.io/docs/gettingStarted/au
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link-parity-trace [link-parity-trace](https://openethereum.github.io/wiki/JSONRPC-trace-module)
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link-parity-rpc [link-parity-rpc](https://openethereum.github.io/wiki/JSONRPC)
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link-pocket-signup [link-pocket-signup](https://pokt.network/pocket-gateway-ethereum-mainnet/)
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link-web3 [link-web3](https://github.com/ethereum/web3.js)
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link-web3js [link-web3](https://github.com/ethereum/web3.js)
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link-web3-http [link-web3-http](https://github.com/ethereum/web3.js/tree/1.x/packages/web3-providers-http)
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link-web3-ipc [link-web3-ipc](https://github.com/ethereum/web3.js/tree/1.x/packages/web3-providers-ipc)
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link-web3-send [link-web3-send](https://github.com/ethereum/web3.js/blob/1.x/packages/web3-providers-http/types/index.d.ts#L57)
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@ -10,7 +10,11 @@ so a lot of changes are largely internal.
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- [BigNumbers](migrate-bigint)
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- [Contracts](migrate-contracts)
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- [Importing](migrate-importing)
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- [Odds and Ends](migrate-other)
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- [Providers](migrate-providers)
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- [Signatures](migrate-signatures)
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- [Transactions](migrate-transactions)
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- [Utilities](migrate-utils)
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- [Removed Items](migrate-missing)
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_subsection: Big Numbers @<migrate-bigint>
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@ -32,7 +36,7 @@ _code: creating large numbers @lang<script>
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// Using BigNumber in v5
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value = BigNumber.from("1000")
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// Using BigInt in v6 (ysing literal notation).
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// Using BigInt in v6 (using literal notation).
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// Notice the suffix n
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value = 1000n
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@ -193,10 +197,95 @@ _code: importing in v6 @lang<script>
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import { InfuraProvider } from "ethers/providers"
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_subsection: Odds and Ends @<migrate-other>
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_subsection: Providers @<migrate-providers>
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In addition to all the ``ethers.providers.*`` being moved to
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``ethers.*``, the biggest change developers need to keep in
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mind is that ``Web3Provider`` (which historically was used
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to wrap [[link-web3js]] providers) is now called
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[[BrowserProvider]] which is designed to wrap EIP-1193
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providers, which is the standard that both modern Web3.js and
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injected providers offer.
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_code: wrapping EIP-1193 providers @lang<script>
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// v5
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provider = new ethers.providers.Web3Provider(window.ethereum)
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// v6:
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provider = new ethers.BrowserProvider(window.ethereum)
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_code: default AbiCoder @lang<script>
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_subsection: Signatures @<migrate-signatures>
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The Signature is now a class which facilitates all the parsing
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and serializing.
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_code: signature manipulation
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// v5
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splitSig = splitSignature(sigBytes)
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sigBytes = joinSignature(splitSig)
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// v6
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splitSig = ethers.Signature.from(sigBytes)
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sigBytes = ethers.Signature.from(splitSig).serialized
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_subsection: Transactions @<migrate-transactions>
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The transaction helpers present in v5 were all wrapped into a
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[[Transaction]] class, which can handle any supported transaction
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format to be further processed
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_code: parasing transactions @lang<script>
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// v5
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tx = parseTransaction(txBytes)
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txBytes = serializeTransaction(tx)
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txBytes = serializeTransaction(tx, sig)
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// v6
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tx = Transaction.from(txBytes)
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// v6 (the tx can optionally include the signature)
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txBytes = Transaction.from(tx).serialized
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_subsection: Utilities @<migrate-utils>
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_code: Bytes32 string helpers @lang<script>
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// In v5:
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bytes32 = ethers.utils.formatBytes32String(text)
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text = ethers.utils.parseBytes32String(bytes32)
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// In v6:
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bytes32 = ethers.encodeBytes32String(text)
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text = ethers.decodeBytes32String(bytes32)
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_code: constants @lang<script>
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// v5:
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ethers.constants.AddressZero
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ethers.constants.HashZero
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// v6:
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ethers.ZeroAddress
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ethers.ZeroHash
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_code: data manipulation @lang<script>
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// v5
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slice = ethers.utils.hexDataSlice(value, start, end)
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padded = ethers.utils.hexZeroPad(value, length)
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// v5; converting numbers to hexstrings
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hex = hexlify(35)
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// v6
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slice = ethers.dataSlice(value, start, end)
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padded = ethers.zeroPadValue(value, length)
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// v6; converting numbers to hexstrings
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hex = toBeHex(35)
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_code: defaultAbiCoder @lang<script>
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// In v5, it is a property of AbiCoder
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coder = AbiCoder.defaultAbiCoder
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@ -206,23 +295,27 @@ _code: default AbiCoder @lang<script>
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// instance is returned.
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coder = AbiCoder.defaultAbiCoder()
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_code: getting a JSON-RPC quantity @lang<script>
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// In v5:
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hex = ethers.util.hexValue(value)
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_code: hex conversion @lang<script>
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// v5
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hex = ethers.utils.hexValue(value)
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array = ethers.utils.arrayify(value)
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// In v6:
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// v6
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hex = ethers.toQuantity(value)
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array = ethers.getBytes(value)
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_code: using Bytes32 strings @lang<script>
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// In v5:
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bytes32 = formatBytes32String(text)
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text = parseBytes32String(bytes32)
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_code: solidity non-standard packed @lang<script>
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// v5
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ethers.utils.solidityPack(types, values)
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// In v6:
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bytes32 = encodeBytes32String(text)
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text = decodeBytes32String(bytes32)
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// v6
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ethers.solidityPacked(types, values)
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_subsection: Removed Classes and functions
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_subsection: Removed Classes and functions @<migrate-missing>
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The **Logger** class has been replaced by
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[several Error utility functions](about-errors).
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The ``checkProperties`` and ``shallowCopy`` have been
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removed in favor of using ``.map`` and ``Object.assign``.
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