gen-diff/dist/formatters/pretty.js

utility for searching differences between config files

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _lodash = require('lodash');

var _lodash2 = _interopRequireDefault(_lodash);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

const getType = {
  added: '+ ',
  removed: '- ',
  unchanged: '  ',
  updated: '  '
};

const getIndent = level => '  '.repeat(level);

const renderObj = (obj, level) => {
  const keys = Object.keys(obj);
  const arr = keys.map(key => _lodash2.default.isObject(obj[key]) ? `${getIndent(level + 1)}${key}: ${renderObj(obj[key], level + 2)}` : `${getIndent(level + 2)}${getType.unchanged}${key}: ${obj[key]}`);
  return `{\n${arr.join('\n')}\n  ${getIndent(level)}}`;
};

const drawValue = (value, level) => {
  if (_lodash2.default.isObject(value)) {
    return renderObj(value, level);
  }
  return value;
};

const toPrettyDiff = (node, level) => {
  switch (node.type) {
    case 'added':
      return `${getIndent(level)}${getType[node.type]}${node.key}: ${drawValue(node.newValue, level)}`;
    case 'removed':
      return `${getIndent(level)}${getType[node.type]}${node.key}: ${drawValue(node.oldValue, level)}`;
    case 'updated':
      return [`${getIndent(level)}${getType.added}${node.key}: ${node.newValue}`, `${getIndent(level)}${getType.removed}${node.key}: ${node.oldValue}`].join('\n');
    case 'unchanged':
      if (node.children) {
        return `${getIndent(level)}${getType[node.type]}${node.key}: {
${node.children.map(item => toPrettyDiff(item, level + 2)).join('\n')}\n${getIndent(level + 1)}}`;
      }
      return `${getIndent(level)}${getType[node.type]}${node.key}: ${node.oldValue}`;
    default:
      return `default_case ${node}`;
  }
};

exports.default = ast => `{\n${ast.map(node => toPrettyDiff(node, 1)).join('\n')}\n}`;