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CHANGELOG.md

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This Changelog only applies to notable changes of helios.js on the main branch.

2022/10/25

  • Better error message when catching RuntimeError inside evalParam

2022/10/23

  • HashedDatum and InlineDatum no longer exported
  • TxId and DatumHash exported, Hash no longer exported
  • changeParam handles Hash type literals

2022/10/21

  • ScriptPurpose type, with members Minting, Spending, Rewarding and Certifying
  • ScriptContext.get_script_purpose()
  • Tx.redeemers
  • Int::parse
  • unused struct/enum fields, and unused enum variants, are now allowed
  • Option.unwrap()

2022/10/11

  • added Value::from_map
  • removed tx.now() (in favor of tx.time_range.start and tx.time_range.end)
  • changed time_range.get_start() to time_range.start (is a getter!)
  • added time_range.end (is a getter!)
  • added map.map_keys() and map.map_values()
  • support for operator overloading (internally), with Time - Duration -> Time and Duration/Duration -> Int as new overloads
  • + and * operators are now commutative in case left and right types differ

2022/09/19

  • toSchemaJSON renamed to toSchemaJson
  • tx.outputs_sent_to_datum, tx.value_sent_to_datum, tx.outputs_locked_by_datum, tx.value_locked_by_datum: now take 'isInline' as a third boolean argument

2022/09/16

  • PlutusCore renamed to UPLC everywhere
  • helios.d.ts file generated

2022/08/26

  • program.changeParam accepts both jsons strings and PlutusCoreValue is value

2022/08/25

  • []a.new method uses func(Int) -> a as second arg (first arg is length), List.new_const introduced that uses a as second arg (first arg is length).

2022/08/22

  • TxOutput can have inline datum
  • TxOutput.datum returns OutputDatum enum (replaces the .datum_hash field)
  • OutputDatum enum has members None, Hash and Inline
  • generic Data type introduced (used by inline datum)
  • All types have builtin associated ::from_data() method that converts Data into that type
  • Map.get_safe() method that returns Option
  • staking script purpose
  • StakingPurpose enum, with members Rewarding and Certifying, returned by ScriptContext.get_staking_purpose() (only available in staking/testing script)
  • DCert enum with members Register, Deregister, Delegate, RegisterPool, RetirePool (DCertGenesis and DCertMir ignored)
  • New fields for Tx: Tx.ref_inputs, Tx.dcerts and Tx.withdrawals (constructor for Tx also changed accordingly)
  • ScriptContext constructors have been renamed: new_spending, new_minting, new_rewarding and new_certifying

2022/08/19

  • Library interface changed to something more object-like
  • Script purpose keywords changed to 'testing', 'spending' and 'minting'
  • Macro-like builtins whichs are only allowed after 'main': ValidatorHash::CURRENT, MintingPolicyHash::CURRENT, ScriptContext::new, Tx::new, TxID::CURRENT, TxInput::new, TxOutput::new
  • Generally usable constructors: TxId::new, Address::new, Credential::new_pubkey, Credential::new_validator, StakingCredential::new_hash, StakingCredential::new_ptr
  • First argument of AssetClass::new must be MintingPolicyHash (was ByteArray previously)

2022/08/17

  • Cost calculation of a plutus-core program run

2022/08/16

  • 'simplify' boolean flag in config object that is passed to compile()
  • Map key can't be bool type (makes it easier to use bool as primitive in plutus-core, instead of as data type)
  • Value*Int (not commutative) and Value/Int operators
  • tx methods: 'outputs_sent_to_datum', 'outputs_locked_by_datum' and 'value_sent_to_datum' (not yet property tested)

2022/08/11

  • ByteArray.slice (negative indices relative to end)
  • ByteArray starts_with and ends_with
  • String starts_with and ends_with
  • Map + Map operator (note: map merge doesn't assert uniqueness of keys and simply acts as a concatenation of two lists)
  • Map methods: all, all_keys, all_values, any, any_key, any_value, filter, filter_by_key, filter_by_value, fold, fold_keys, fold_values
  • all methods named 'get...' or 'find...' throw errors if not found
  • TokenName in AssetClass is now ByteArray in order to align with Plutus-Ledger-API (used to be String)

2022/08/10

  • Rust-like syntax, structs and enums can have methods
  • No commas in struct/enum-member definitions
  • No semicolon after const statement
  • C#-like switch syntax
  • TimeRange constructors: ALWAYS, NEVER, from, to
  • TimeRange comparison: is_before(Time) and is_after(Time)
  • Map literal construction, Map.length, Map.is_empty() and Map.get()
  • Value.get_policy()

2022/07/15

  • renamed to helios

2022/07/09

  • all named variables in the Plutus-Light are prefixed with u_ when generating the untyped IR