web3-validator

This is a sub-package of @etn-sc/web3.js.

@etn-sc/web3-validator contains functions for validating objects.

Installation

You can install the package using NPM

Using NPM

npm install @etn-sc/web3-validator

Getting Started

• :writing_hand: If you have questions submit an issue

Usage

You can use the the validator by importing as and using to validate;

import { validator } from '@etn-sc/web3-validator';

// To validate and throw
validator.validate(['uint8', 'string'], [val1, val2]);

// To validate and return error
const errors = validator.validate(['uint8', 'string'], [val1, val2], { silent: true });

To see more examples of schema you can use to validate check following file.

Following eth types are supported to validate.

| Type | Input As | Description | | ----- | ------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------- | | uint | number, string, HexString | Unsigned integer, all ethereum compatible variants are also supported e.g. uint8, uint256. You can also use array specifiers as uint[] or uint[2] | | int | number, string, HexString | Signed integer, all ethereum compatible variants are also supported e.g. int8, int256. You can also use array specifiers as int[] or int[2] | | bytes | HexString, Uint8Array | Raw bytes. You can also use fixed length bytes as bytes[2] |

| string | string | String values | | address | string, HexString | Ethereum network compatible address | | bloom | string, HexString | Check if a given string is a Eth bloom | | tuple | array | You can specify any tuple as nested arrays. e.g. ['uint', 'string']. For a custom tuple or array tuple you can use syntax e.g. ['tuple[3]', ['uint', 'string']] |

For the ethereum compatible data values should be passed as arrays e.g. for schema ['uint', 'string'] value should be passed as [2, 'my-string'].

You can also pass full ABI schema for the validation. e.g.

[{ "name": "owner", "type": "address" }]

The implementation of the validator is extension of JSON-Schema-Draft07 with a custom keyword eth. So you can use JSON-Schema compatible schema to validate any object based data as well.

Prerequisites

• :gear: NodeJS (LTS/Fermium)
• :toolbox: Yarn/Lerna

Package.json Scripts

| Script | Description | | ---------------- | -------------------------------------------------- | | clean | Uses rimraf to remove dist/ | | build | Uses tsc to build package and dependent packages | | lint | Uses eslint to lint package | | lint:fix | Uses eslint to check and fix any warnings | | format | Uses prettier to format the code | | test | Uses jest to run unit tests | | test:integration | Uses jest to run tests under /test/integration | | test:unit | Uses jest to run tests under /test/unit |