Vega transaction checker

A simple tool to check Vega transacton JSON.

Features

• Validates JSON is well formed and parses, attempts to show the error in context if not.

• Encodes the JSON using https://www.npmjs.com/package/@vegaprotocol/protos and shows any errors.

• Re-serialises the encoded data as JSON and shows a diff between this and the original input, which often highlights missing or unexpected fields in the input.

• Encodes the input data in the URL hash for ease of sharing.

• Autocompletes and provides documentation tooltips for most commands.

• Diffs market updates against latest enacted proposal to allow analysis of the impact of a market change proposal prior to submission.

Known limitations

• Serialising the encoded data to JSON doesn't always produce the format expected by the wallet etc. This now only occurs in a few cases like arguments for EVM contracts in oracle specs, and base64 encoded fields.

• Validation errors found by the protobuf encoder don't provider a location/field name and therefore lack much in the way of useful context.

• The URLs with encoded data in the hash are very long. Often too long to share on Slack or even use with URL shorteners.

Potential future enhancements

• Fix JSON encoding (hopefully via upstream library enhancement).

• Alternative and less unwieldy content-addressable sharing system.

• Call tx check endpoint on data node to provide more detailed and helpful validation.

• Ability to submit transactons.

• Support for linter style rules to provide additional help.

• Form-powered templates to speed up and simplify creation of transactions.

• Ability to download and copy data from a data node when making modification transactions.