Jupyter notebook extension code prettifier configuration for Rust

config

  "rust": {
    "library": "extern crate serde_json; extern crate rustfmt;",
    "prefix": "{ use std::fs::File; use serde_json::json; use crate::rustfmt::{format_input, Input, config::Config}; let config = Config::default(); let input = Input::Text(",
    "postfix": ".into()); let (summary, filemap, _) = format_input::<File>(input, &config, Option::None).unwrap(); if summary.has_no_errors() { let (_, output) = &filemap[0]; println!(\"{}\", json!(output.to_string())); } }"
  }

Add this to the configuration of the code prettifier nbextension to use with the Rust EvCxR Jupyter kernel.