"use strict"; const prettier = require("prettier-local"); const concat = prettier.doc.builders.concat; module.exports = { languages: [ { name: "foo", parsers: ["foo"], extensions: [".foo"] } ], parsers: { foo: { parse: text => ({ text }), astFormat: "foo" } }, printers: { foo: { print: path => concat(["foo+", path.getValue().text]) } } };