在NodeJs中包含Blockly会给出错误“无法设置未定义的属性'colour'”

Question

我正在创建一个以NodeJS为后端的Blockly项目。当我包含blockly_compress.js文件时，出现此错误：

/Users/camden/blockly/blocks_compressed.js:5
Blockly.Blocks.colour={};Blockly.Constants={};Blockly.Constants.Colour={};Blockly.Constants.Colour.HUE=20;
                     ^

TypeError: Cannot set property 'colour' of undefined
    at Object.<anonymous> (/Users/camden/blockly/blocks_compressed.js:5:22)
    at Module._compile (internal/modules/cjs/loader.js:759:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:770:10)
    at Module.load (internal/modules/cjs/loader.js:628:32)
    at Function.Module._load (internal/modules/cjs/loader.js:555:12)
    at Module.require (internal/modules/cjs/loader.js:666:19)
    at require (internal/modules/cjs/helpers.js:16:16)
    at Object.<anonymous> (/Users/camden/backend.js:3:1)
    at Module._compile (internal/modules/cjs/loader.js:759:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:770:10)

奇怪的是，它昨天起作用了，但是今天突然失效了。这是Node的某种错误吗？

编辑：这是引发错误的代码：

global.Blockly = require('./blockly/blockly_compressed.js');
require('./blockly/blocks_compressed.js');
require('./blockly/javascript_compressed.js');