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【TypeScript】 ts-node で Unknown file extension ".ts" エラーが出るとき

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概要

ts-node で実行すると以下のエラーが出る場合の対処方法を残す

ts-node src/flow.ts                                                                           1 ✘  18:13:01  
TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension ".ts" xxxx

やり方

"type": "module"package.jsonから削除することで実行することができるようになる

package.json
{
-  "type": "module",
  "name": "practice",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
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