babel-core/lib/babel/transformation/helpers/define-map.js

Turn ES6 code into readable vanilla ES5 with source maps

"use strict";

var _interopRequireWildcard = function (obj) { return obj && obj.__esModule ? obj : { "default": obj }; };

var _interopRequire = function (obj) { return obj && obj.__esModule ? obj["default"] : obj; };

exports.push = push;
exports.hasComputed = hasComputed;
exports.toComputedObjectFromClass = toComputedObjectFromClass;
exports.toClassObject = toClassObject;
exports.toDefineObject = toDefineObject;
exports.__esModule = true;

var cloneDeep = _interopRequire(require("lodash/lang/cloneDeep"));

var traverse = _interopRequire(require("../../traversal"));

var each = _interopRequire(require("lodash/collection/each"));

var has = _interopRequire(require("lodash/object/has"));

var t = _interopRequireWildcard(require("../../types"));

function push(mutatorMap, key, kind, computed, value) {
  var alias = t.toKeyAlias({ computed: computed }, key);

  var map = {};
  if (has(mutatorMap, alias)) map = mutatorMap[alias];
  mutatorMap[alias] = map;

  map._key = key;
  if (computed) map._computed = true;

  map[kind] = value;
}

function hasComputed(mutatorMap) {
  for (var key in mutatorMap) {
    if (mutatorMap[key]._computed) {
      return true;
    }
  }
  return false;
}

function toComputedObjectFromClass(obj) {
  var objExpr = t.arrayExpression([]);

  for (var i = 0; i < obj.properties.length; i++) {
    var prop = obj.properties[i];
    var val = prop.value;
    val.properties.unshift(t.property("init", t.identifier("key"), t.toComputedKey(prop)));
    objExpr.elements.push(val);
  }

  return objExpr;
}

function toClassObject(mutatorMap) {
  var objExpr = t.objectExpression([]);

  each(mutatorMap, function (map) {
    var mapNode = t.objectExpression([]);

    var propNode = t.property("init", map._key, mapNode, map._computed);

    each(map, function (node, key) {
      if (key[0] === "_") return;

      var inheritNode = node;
      if (t.isMethodDefinition(node) || t.isClassProperty(node)) node = node.value;

      var prop = t.property("init", t.identifier(key), node);
      t.inheritsComments(prop, inheritNode);
      t.removeComments(inheritNode);

      mapNode.properties.push(prop);
    });

    objExpr.properties.push(propNode);
  });

  return objExpr;
}

function toDefineObject(mutatorMap) {
  each(mutatorMap, function (map) {
    if (map.value) map.writable = t.literal(true);
    map.configurable = t.literal(true);
    map.enumerable = t.literal(true);
  });

  return toClassObject(mutatorMap);
}