feat(v1): split polymorphic from/fromAbi on Abi* modules into shape-specific helpers

[jxom]

Splits the polymorphic from and fromAbi(abi, name | selector) helpers on AbiItem, AbiFunction, AbiEvent, and AbiError into shape-specific functions: fromHumanReadable, fromJson, fromAbiName, and fromAbiSelector.

The original polymorphic helpers are retained as @internal dispatchers so the shorthand decode/encode overloads keep working. AbiConstructor keeps fromAbi(abi) since constructors have no name or selector.

Abi.from now defaults to { prepare: true }, precomputing the signature hash on every item and removing the per-call keccak256 cost from the hot encode/decode path. Pass { prepare: false } to opt out.

Single-value collapse in AbiFunction.decodeResult and AbiError.decode, and the undefined return from AbiConstructor.decode for empty inputs, are unchanged.

- AbiFunction.from('function approve(address,uint256)')
+ AbiFunction.fromHumanReadable('function approve(address,uint256)')

- AbiFunction.from({ type: 'function', name: 'approve', /* ... */ })
+ AbiFunction.fromJson({ type: 'function', name: 'approve', /* ... */ })

- AbiFunction.fromAbi(abi, 'approve')
+ AbiFunction.fromAbiName(abi, 'approve')

- AbiFunction.fromAbi(abi, '0x095ea7b3')
+ AbiFunction.fromAbiSelector(abi, '0x095ea7b3')

- Abi.from(abi)                       // no `hash` precomputed
+ Abi.from(abi)                       // `hash` precomputed by default
+ Abi.from(abi, { prepare: false })   // opt out of `hash` precomputation

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Project	Deployment	Actions	Updated (UTC)
ox	Error		May 13, 2026 6:10am

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