@marko/prettyprint/dist/util/formatJS.js

Prettyprint Marko template files in the syntax of your choice

"use strict";

const format = require("prettier").format;

const redent = require("redent");

const toCode = require("./toCode");

module.exports = function (code, printContext, expression) {
  if (!code) {
    return "";
  }

  code = toCode(code, printContext);
  const {
    indentString,
    depth
  } = printContext;
  const tabWidth = indentString.length;
  const isExpression = expression || /^class *?\{/.test(code);
  const usedSpace = depth * tabWidth;
  const config = {
    parser: "babel",
    semi: !printContext.noSemi,
    printWidth: Math.max(0, printContext.maxLen - usedSpace),
    singleQuote: printContext.singleQuote,
    useTabs: indentString[0] === "\t",
    tabWidth
  };

  if (isExpression) {
    code = "_ = " + code;
  }

  code = format(code, config).trim().replace(/__%ESCAPE%__/g, "\\");

  if (isExpression) {
    code = code.slice(4);

    if (code[code.length - 1] === ";") {
      code = code.slice(0, -1);
    }
  }

  return redent(code, depth, indentString).trim();
};