error Unsupported scheme node for module `nodemodule`. Supported schemes

I'm trying to import a module using:

import { example } from "npm:example";

import { example } from "npm:example";

Inside

example

example

, there's this line:

import something from "module";

import something from "module";

I get this error on that very line:

error: Unsupported scheme "node" for module "node:module". Supported schemes: [
    "data",
    "blob",
    "file",
    "http",
    "https",
]

error: Unsupported scheme "node" for module "node:module". Supported schemes: [
    "data",
    "blob",
    "file",
    "http",
    "https",
]