forest-express/dist/utils/json.js

Official package for all Forest Express Lianas

"use strict";

var _ = require('lodash');
var prettyPrint = function prettyPrint(json) {
  var indentation = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : '';
  var result = '';
  if (_.isArray(json)) {
    result += '[';
    var isSmall = json.length < 3;
    var isPrimaryValue = json.length && !_.isArray(json[0]) && !_.isObject(json[0]);
    _.each(json, function (item, index) {
      if (index === 0 && isPrimaryValue && !isSmall) {
        result += "\n".concat(indentation, "  ");
      } else if (index > 0 && isPrimaryValue && !isSmall) {
        result += ",\n".concat(indentation, "  ");
      } else if (index > 0) {
        result += ', ';
      }
      result += prettyPrint(item, isPrimaryValue ? "".concat(indentation, "  ") : indentation);
    });
    if (isPrimaryValue && !isSmall) {
      result += "\n".concat(indentation);
    }
    result += ']';
  } else if (_.isObject(json)) {
    result += '{\n';
    var isFirst = true;
    Object.keys(json).forEach(function (key) {
      var value = json[key];
      if (!isFirst) {
        result += ',\n';
      } else {
        isFirst = false;
      }
      result += "".concat(indentation, "  \"").concat(key, "\": ");
      result += prettyPrint(value, "".concat(indentation, "  "));
    });
    result += "\n".concat(indentation, "}");
  } else if (_.isNil(json)) {
    result += 'null';
  } else if (_.isString(json)) {
    // NOTICE: Escape invalid characters (see: https://www.json.org/json-en.html).
    //         Also, JSON spec precise that '/' doesn't need to be escaped.
    //         (see: https://stackoverflow.com/questions/1580647/json-why-are-forward-slashes-escaped)
    var escapedJsonString = json.replace(/[\\]/g, '\\\\').replace(/["]/g, '\\"').replace(/[\b]/g, '\\b').replace(/[\f]/g, '\\f').replace(/[\n]/g, '\\n').replace(/[\r]/g, '\\r').replace(/[\t]/g, '\\t');
    result += "\"".concat(escapedJsonString, "\"");
  } else {
    result += "".concat(json);
  }
  return result;
};
exports.prettyPrint = prettyPrint;