@alayanetwork/eth-method-registry
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A module for getting method signature info from an platon method signature.
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# Eth Method Registry [](https://circleci.com/gh/danfinlay/eth-method-registry)
A javascript library for getting Solidity method data from a four-byte method signature.
Currently uses [the parity on-chain method registry](https://www.bokconsulting.com.au/blog/a-quick-look-at-paritys-signature-registry-contract/), but eventually I am interested in adding various parallel methods, whatever works and returns a valid response!
## Installation
With Node.js Installed:
`yarn install eth-method-registry -S`
## Usage
```javascript
const MethodRegistry = require('@alayanetwork/eth-method-registry')
const Eth = require('@alayanetwork/ethjs')
const provider = new Eth.HttpProvider('https://mainnet.infura.io/v3/YOUR-PROJECT-ID')
const registry = new MethodRegistry({ provider })
// Uses promises, pass the 4byte prefix to the lookup method:
registry.lookup('0xa9059cbb')
.then((result) => {
assert.equal(result, 'transfer(address,uint256)', 'finds correct signature')
})
// Also includes a method for parsing the resulting sig
// into something more useful for rendering:
const sig = 'transferFrom(address,uint256)'
const parsed = registry.parse(sig)
/* Parsed value:
{
name :'Transfer From',
args: [
{ type: 'address' },
{ type: 'uint256' }
]
}
*/
```