1.3.1 • Published 8 years ago

augur-abi v1.3.1

Weekly downloads
3
License
MIT
Repository
github
Last release
8 years ago

augur-abi

Build Status Coverage Status npm version

augur-abi provides Ethereum contract ABI data serialization methods. ABI encoding is needed to invoke functions on Ethereum smart contracts.

Installation

$ npm install augur-abi

Usage

To use augur-abi in Node.js, just require it:

var augur_abi = require("augur-abi");

A minified, browserified file dist/augur-abi.min.js is included for use in the browser. Including this file simply attaches the augur_abi object to window:

<script src="dist/augur-abi.min.js" type="text/javascript"></script>

The encode method encodes the full ABI data (prefix + parameters) needed for a contract function call. For example, to encode a method named double that takes a single 256-bit integer parameter with a value of 3:

var encoded = augur_abi.encode({
    name: "double",
    signature: ["int256"],
    params: ["0x3"]
});
// encoded:
"0x6ffa1caa0000000000000000000000000000000000000000000000000000000000000003"

encoded is the concatenation of the method's prefix 0x6ffa1caa, which is derived from the name of the method "double" and its signature "[int256]", and the encoded parameter value, ["0x3"].

Tests

Unit tests are in the test directory, and can be run with mocha:

$ npm test
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