使用 ts-node 直接运行 typescript

安装依赖

npm install -D typescript ts-node tslib @types/node

坑

当 package.json 中 type 为 module时，报错 ERR_UNKNOWN_FILE_EXTENSION
解决方法：删除 "type": "module"

{
  "type": "module",
  "devDependencies": {
    "@types/node": "^20.12.7",
    "ts-node": "^10.9.2",
    "typescript": "^5.4.5"
  }
}

 ~/my/ts-test  ts-node --esm test.ts
TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension ".ts" for /Users/kuhufu/my/ts-test/test.ts
    at Object.getFileProtocolModuleFormat [as file:] (node:internal/modules/esm/get_format:160:9)
    at defaultGetFormat (node:internal/modules/esm/get_format:203:36)
    at defaultLoad (node:internal/modules/esm/load:143:22)
    at async nextLoad (node:internal/modules/esm/hooks:750:22)
    at async nextLoad (node:internal/modules/esm/hooks:750:22)
    at async Hooks.load (node:internal/modules/esm/hooks:383:20)
    at async handleMessage (node:internal/modules/esm/worker:199:18) {
  code: 'ERR_UNKNOWN_FILE_EXTENSION'
}

vscode 运行配置 launch.json

{
    // 使用 IntelliSense 了解相关属性。 
    // 悬停以查看现有属性的描述。
    // 欲了解更多信息，请访问: https://go.microsoft.com/fwlink/?linkid=830387
    "version": "0.2.0",
    "configurations": [
        {
            "name": "ts-node",
            "type": "node",
            "request": "launch",
            "args": [
                "${relativeFile}"
            ],
            "runtimeArgs": [
                "-r",
                "ts-node/register"
            ],
            "cwd": "${workspaceRoot}",
            "protocol": "inspector",
            "internalConsoleOptions": "openOnSessionStart"
        }
    ]
}