how can i get this import to work in deno?

Question

Using Deno 2.0.6 on Windows 11

I'm using civet 0.8.7 to produce *.js files and civet doesn't yet support things like:

import {assert} from 'jsr:@std/assert'
import {globSync} from 'npm:glob'

NOTE: this is NOT an issue with civet itself - it's regarding imports in deno

i.e. the jsr: and npm: isn't allowed. I thought that the solution would be to add these to my deno.jsonc imports key:

"@std/assert": "jsr:@std/assert@^1.0.8",
"glob": "npm:glob@^11.0.0",

However, when I try to import a file containing:

import {assert} from '@std/assert'
import {globSync} from 'glob'

I get the error message:

error: Relative import path "@std/streams" not prefixed with / or ./ or ../
  hint: If you want to use a JSR or npm package, try running `deno add jsr:@std/streams` or `deno add npm:@std/streams`
    at file:///C:/Users/johnd/vllu/src/lib/llutils.js:7:30

I thought that with the entries for "@std/assert" and "glob" in my deno.jsonc file (inside the "imports" key), deno would realize that these are NOT relative imports?

FYI, I did try running 'deno add jsr:@std/streams' as suggested. It runs fine, but I still get the error message above, so it didn't help.

FYI, here is my entire deno.jsonc file:

{
    // --- Comments and trailing commas allowed!
    "tasks": {
        "build:llutils": "civet --js -o .js --inline-map -c src/lib/llutils.civet",
        "build:compile": "civet --js -o .js --inline-map -c src/bin/compile.civet",
        "install:compile": "deno install -fgA src/bin/compile.js",
        "build": "deno task build:llutils && deno task build:compile && deno task install:compile && compile",
        },
    "imports": {
        "@std/assert": "jsr:@std/assert@^1.0.8",
        "@std/async": "jsr:@std/async@^1.0.9",
        "@std/cli": "jsr:@std/cli@^1.0.6",
        "@std/path": "jsr:@std/path@^1.0.8",
        "@std/streams": "jsr:@std/streams@^1.0.8",
        "glob": "npm:glob@^11.0.0",
        },
    }

Answer 1

The original issue is no longer reproducible, suggesting that it may have been resolved in a subsequent version of Deno, as evidenced by the release of 2.1.0.

Answer 2

I had this issue too. Today I upgraded deno and found out I had two different installations.

Default Terminal: /Users/userName/.deno/bin/deno (version 2.1.3)

Vscode using homebrew: /opt/homebrew/bin/deno (version 1.44.4)

I know you use windows. But for mac I needed to brew uninstall deno and then the correct version was available in vscode.

Answer 3

Quick Fix (Deno 2.1.4)

If you're using the VS Code test runner, then the following will give you the error: "Relative import path "@std/assert" not prefixed with / or ./ or ../ etc."

import { assertEquals } from "@std/assert";

However, specifying the full path to your import will make it work.

import { assertEquals } from "jsr:@std/assert@1";

Why

If you take a quick look at the default deno.json file, you'll notice that the import for @std/assert is being aliased from the full import jsr:std/assert@1

{
  "tasks": {
    "dev": "deno run --watch main.ts"
  },
  "imports": {
    "@std/assert": "jsr:@std/assert@1"
  }
}

It seems the VS Code test runner does not take the deno.json file into account. If instead you run the test with deno test it should work either way.

source: https://docs.deno.com/runtime/fundamentals/modules/#importing-third-party-modules-and-libraries