Error: Unknown file extension ".ts"

[KermanX]

I cannot run a code via ts-node
when I run

ts-node src/dev.ts

It shows:

TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension ".ts" for C:\Users\HONOR\Desktop\workspace\ucon\ucon\src\dev.ts
    at Loader.defaultGetFormat [as _getFormat] (internal/modules/esm/get_format.js:71:15)
    at Loader.getFormat (internal/modules/esm/loader.js:102:42)
    at Loader.getModuleJob (internal/modules/esm/loader.js:231:31)
    at async Loader.import (internal/modules/esm/loader.js:165:17)
    at async Object.loadESM (internal/process/esm_loader.js:68:5) {
  code: 'ERR_UNKNOWN_FILE_EXTENSION'
}

[cspotcode]

You probably need #1007

[KermanX]

Thanks a lot.
I've read #1007, but still confused.
I tried running this:

but not succeeded.