no-external-imports

Disallows the use of external imports.

What's the motivation of this lint rule?
- This rule emits warnings if external modules are imported via URL. "deps.ts" and import maps are exception.
Why is linted code considered bad?
- Importing external modules just works fine, but it will take time and effort when you want to upgrade those modules if they are imported in multiple places in your project.
When should it be used?
- To avoid it you could use "deps.ts convention" or import maps, where you import all external modules and then re-export them or assign aliases to them.
- If you'd like to follow the "deps.ts convention" or use import maps.

Invalid:

import { assertEquals } from "https://deno.land/std@0.126.0/testing/asserts.ts";

Valid:

import { assertEquals } from "./deps.ts";

// deps.ts

export {
  assert,
  assertEquals,
  assertStringIncludes,
} from "https://deno.land/std@0.126.0/testing/asserts.ts";

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