正在运行的钩子

¥Running hooks

# main.coffee
import { scream } from './scream.coffee'
console.log scream 'hello, world'

import { version } from 'node:process'
console.log "Brought to you by Node.js version #{version}" 拷贝

# scream.coffee
export scream = (str) -> str.toUpperCase() 拷贝

为了运行示例，添加一个包含 CoffeeScript 文件的模块类型的 package.json 文件。

¥For the sake of running the example, add a package.json file containing the module type of the CoffeeScript files.

{
  "type": "module"
} 拷贝

这仅用于运行示例。在现实世界的加载器中，getPackageType() 必须能够返回 Node.js 已知的 format，即使在 package.json 中没有明确的类型，否则 nextLoad 调用将抛出 ERR_UNKNOWN_FILE_EXTENSION（如果未定义）或 ERR_UNKNOWN_MODULE_FORMAT（如果它不是 加载钩子 文档中列出的已知格式）。

¥This is only for running the example. In real world loaders, getPackageType() must be able to return an format known to Node.js even in the absence of an explicit type in a package.json, or otherwise the nextLoad call would throw ERR_UNKNOWN_FILE_EXTENSION (if undefined) or ERR_UNKNOWN_MODULE_FORMAT (if it's not a known format listed in the load hook documentation).

使用前面的钩子模块，运行 node --import 'data:text/javascript,import { register } from "node:module"; import { pathToFileURL } from "node:url"; register(pathToFileURL("./coffeescript-hooks.mjs"));' ./main.coffee 或 node --import ./coffeescript-sync-hooks.mjs ./main.coffee 会导致 main.coffee 在其源代码从磁盘加载之后但在 Node.js 执行它之前转换为 JavaScript；对于通过任何加载文件的 import 语句引用的任何 .coffee、.litcoffee 或 .coffee.md 文件，依此类推。

¥With the preceding hooks modules, running node --import 'data:text/javascript,import { register } from "node:module"; import { pathToFileURL } from "node:url"; register(pathToFileURL("./coffeescript-hooks.mjs"));' ./main.coffee or node --import ./coffeescript-sync-hooks.mjs ./main.coffee causes main.coffee to be turned into JavaScript after its source code is loaded from disk but before Node.js executes it; and so on for any .coffee, .litcoffee or .coffee.md files referenced via import statements of any loaded file.