A small implementation of JQ.
jq is a fantastic tool for wrangling JSON, but it's written in C and so cannot be used in a browser. This project implements a subset of the JQ filter language, and is intended for simple filtering jobs in JavaScript where the filter is supplied e.g. by a user.
It uses a parsed expression grammar (via Peggy) to transform JQ expressions into a series of "op codes", with each one representing a JQ filter operation. Each op code is executed with a context, which is initialised with the input object. As each op code executes, the context is updated.
- Implement enough of the JQ syntax to be useful
- Implement it the same as JQ
- Complete implementation of JQ (but the level of completeness may increase over time).
Generic boolean expression evaluation
shamelessly adapted from https://github.com/hashicorp/js-bexpr/