拿掉 build files

node_modules/core-js/fn/map/from.js

@@ -1,8 +0,0 @@
-'use strict';
-require('../../modules/es6.map');
-require('../../modules/es7.map.from');
-var $Map = require('../../modules/_core').Map;
-var $from = $Map.from;
-module.exports = function from(source, mapFn, thisArg) {
-  return $from.call(typeof this === 'function' ? this : $Map, source, mapFn, thisArg);
-};

node_modules/core-js/fn/map/index.js

@@ -1,8 +0,0 @@
-require('../../modules/es6.object.to-string');
-require('../../modules/es6.string.iterator');
-require('../../modules/web.dom.iterable');
-require('../../modules/es6.map');
-require('../../modules/es7.map.to-json');
-require('../../modules/es7.map.of');
-require('../../modules/es7.map.from');
-module.exports = require('../../modules/_core').Map;

node_modules/core-js/fn/map/of.js

@@ -1,8 +0,0 @@
-'use strict';
-require('../../modules/es6.map');
-require('../../modules/es7.map.of');
-var $Map = require('../../modules/_core').Map;
-var $of = $Map.of;
-module.exports = function of() {
-  return $of.apply(typeof this === 'function' ? this : $Map, arguments);
-};