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Changelog

v0.1.9-dev

Features

  • Allow executing a file when passed as a CLI argument

Bug fixes

  • Fix address.balance not working with block option

v0.1.8 (2025-11-14)

Features

  • Add tx.from, tx.to, and tx.input properties to access transaction details

Other changes

  • Upgrade to alloy 1.1.0
  • Upgrade to Foundry 1.4.4

v0.1.7 (2025-11-10)

Features

  • Add vm.getEnv to get environment variables
  • Add abi.getSignature to get the signature of a function or error by its selector
  • Add support for mapping to contract types

Bug fixes

  • Fix bytes to address casting
  • Fix Etherscan API V2 support

v0.1.6 (2025-06-03)

Bug fixes

  • Fix conversion from bytesN to bytes
  • Fix traceCall not working with block option

v0.1.5 (2025-05-28)

Features

  • Refactor account management functions:
    • Move all account management functions to accounts namespace:
      • Rename repl.current to accounts.current
    • Allow to select already loaded accounts without loading them again
    • Add more management functions to accounts namespace:
      • accounts.loaded to list all loaded accounts
      • accounts.select to select a loaded account
      • accounts.listKeystores to list all keystores in ~/.foundry/keystore/
      • accounts.alias to set an alias for an account
  • Add abi.decodeMultisend to decode Safe multisend transactions
  • Integrate 4byte.directory API to find function signatures by selector when decoding calldata

Bug fixes

  • Fix fixed bytes parsing/casting

Other changes

  • Add 0x prefix to JSON serialized bytes
  • Rename repl.loadAbi to abi.load and repl.fetchAbi to abi.fetch
  • Rename repl.connected to vm.connected
  • Rename POLYGON_API_KEY to POLYGONSCAN_API_KEY and POLYGON_ZKEVM_API_KEY to POLYGONSCAN_ZKEVM_API_KEY
  • Add support for Etherscan API V2

v0.1.4 (2025-01-26)

Features

  • Add repl.fork to start run and use an Anvil instance as a fork of the current URL
  • Add repl.startPrank / repl.stopPrank to start/stop impersonating an address
  • Add FUNC.traceCall method to contract functions
  • Add abi.decodeData to decode function calldata and errors from any known ABI
  • Add address.transfer to send ETH to an address
  • Add json.stringify to convert a value to a JSON string
  • Add fs.write to write a string to a file
  • Add vm.skip and vm.mine to skip time and mine blocks

Other changes

  • Encode FixedBytes as with zero padding on the left instead of the right
  • Allow to load a private key from bytes32
  • Move repl.block, repl.startPrank, repl.stopPrank, repl.rpc, repl.fork, and repl.deal to vm namespace

v0.1.3 (2024-08-15)

Features

  • Decode logs returned by Transaction.getReceipt() when available in ABI
  • Add support for array concatenation
  • Add array.filter function
  • Add array.reduce function
  • Add support for bitwise operators
  • [EXPERIMENTAL] Add support for anonymous functions
  • [EXPERIMENTAL] Add support for fetching events
  • Add support for negative indices in arrays and slices

Bug fixes

  • Fix abi.decode for nested types
  • Fix completion not triggering right after [

Other changes

  • Drop Receipt type and use NamedTuple instead

v0.1.2 (2024-08-04)

Features

  • Add repl.block()
  • Allow to customize more variables through call options:
    • block - block number to use for the call
    • from - address to use as msg.sender
    • gasLimit - gas limit to use for the transaction
    • maxFee - maximum fee to pay for the transaction
    • priorityFee - priority fee to pay for the transaction
    • gasPrice - gas price to use for the (legacy) transaction
  • Allow to select version of Eclair when installing using install script
  • Add repl.loadKeystore to load keystore from a file created by cast
  • Allow conversion between different fixed-size bytes types (e.g. bytes32 -> bytes4 or vice-versa)
  • Allow slicing on bytes and strings

Bug fixes

  • Fix parsing of fix bytes with less than 32 bytes (e.g. bytes4)
  • Fix display of functions that don't check argument types

v0.1.1 (2024-07-30)

Features

  • Add support for bytes<->uint256 conversion

Bug fixes

  • Fix bug with abi.encode and abi.decode that caused the functions to fail/return incorrect values