workspace dependencies do not work with import aliases

[andykais]

I have set up a workspace with three packages:

{
  "workspace": [
    "./packages/core",
    "./packages/cli",
    "./packages/web",
  ],

  "imports": {
    "@std/fs": "jsr:@std/fs@^1.0.1",
    "@std/path": "jsr:@std/path@^1.0.2",
    "@andykais/ts-rpc": "jsr:@andykais/ts-rpc@^0.1.1",
    "@std/media-types": "jsr:@std/media-types@0.224.0",
    "forager-test": "./lib/test/lib/util.ts"
  },

  "nodeModulesDir": "auto"
}

I am working on setting up the web package that will be a sveltekit project. My vite.config.ts looks like this:

import tailwindcss from "@tailwindcss/vite";
import deno from "@deno/vite-plugin";
import { sveltekit } from '@sveltejs/kit/vite';
import { defineConfig } from 'vite';

export default defineConfig({
	plugins: [deno(), sveltekit(), tailwindcss()],
  server: {
    fs: {
      allow: ['../../node_modules']
    }
  }
});

I have not touched the defaults from deno run npm:sv create web (with the options typesscript, tailwind). I noticed that when I attempt to import the @forager/core (mapped to ./packages/core dependency, it fails because of an import alias I have set up in that workspace. Full deno.json here:

{
  "name": "@forager/core",
  "version": "0.6.0",

  "tasks": {
    "lint": "deno lint",
    "test": "deno test --allow-run=ffprobe,ffmpeg --unstable-ffi --check --allow-read --allow-write --allow-ffi --allow-env=HOME,DENO_DIR,XDG_CACHE_HOME --allow-net=github.com,objects.githubusercontent.com --trace-leaks test",
    "test:watch": "deno test --allow-run=ffprobe,ffmpeg --unstable-ffi --check --allow-read --allow-write --allow-ffi --allow-env=HOME,DENO_DIR,XDG_CACHE_HOME --allow-net=github.com,objects.githubusercontent.com --trace-leaks --watch"
  },

  "imports": {
    "@std/fmt": "jsr:@std/fmt@0.225.6",
    "@std/fs": "jsr:@std/fs@0.229.3",
    "@std/log": "jsr:@std/log@^0.224.6",
    "@std/media-types": "jsr:@std/media-types@0.224.0",
    "@std/path": "jsr:@std/path@1.0.0",
    "@torm/sqlite": "jsr:@torm/sqlite@^1.6.0",
    "forager": "./src/mod.ts",
    "ts-pattern": "npm:ts-pattern@5.2.0",
    "zod": "npm:zod@^3.24.2",
    "~/": "./src/"
  },

  "exports": {
    ".": "./src/mod.ts",
    "./logger": "./src/lib/logger.ts"
  },

  "lint": {
    "include": [
      "./src/",
      "./test/"
    ],
    "rules": {
      "tags": [],
      "include": [
        "no-unused-vars"
      ]
    }
  }
}

I believe the key piece that is breaking here is "~/": "./src/". I feel this is true because vite is breaking on the very first import that uses the alias, though it resolves relative imports.

4:26:06 PM [vite] (ssr) Error when evaluating SSR module /Users/andrew.kaiser/Code/andykais/forager/monorepo/packages/web/src/routes/test/+server.ts: Cannot find module '~/lib/logger.ts' imported from '/Users/andrew.kaiser/Code/andykais/forager/monorepo/packages/core/src/context.ts'
      at fetchModule (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/chunks/dep-ByPKlqZ5.js:52036:19)
      at RunnableDevEnvironment.fetchModule (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/chunks/dep-ByPKlqZ5.js:53130:12)
      at fetchModule (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/chunks/dep-ByPKlqZ5.js:53088:21)
      at handleInvoke (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/chunks/dep-ByPKlqZ5.js:44492:28)
      at EventEmitter.listenerForInvokeHandler (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/chunks/dep-ByPKlqZ5.js:44565:25)
      at EventEmitter.emit (ext:deno_node/_events.mjs:393:28)
      at Object.send (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/chunks/dep-ByPKlqZ5.js:30829:40)
      at Object.invoke (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/module-runner.js:610:34)
      at Object.invoke (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/module-runner.js:671:34)
      at SSRCompatModuleRunner.getModuleInformation (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/module-runner.js:1192:94)
Error: Cannot find module '~/lib/logger.ts' imported from '/Users/andrew.kaiser/Code/andykais/forager/monorepo/packages/core/src/context.ts'
    at fetchModule (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/chunks/dep-ByPKlqZ5.js:52036:19)
    at RunnableDevEnvironment.fetchModule (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/chunks/dep-ByPKlqZ5.js:53130:12)
    at fetchModule (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/chunks/dep-ByPKlqZ5.js:53088:21)
    at handleInvoke (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/chunks/dep-ByPKlqZ5.js:44492:28)
    at EventEmitter.listenerForInvokeHandler (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/chunks/dep-ByPKlqZ5.js:44565:25)
    at EventEmitter.emit (ext:deno_node/_events.mjs:393:28)
    at Object.send (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/chunks/dep-ByPKlqZ5.js:30829:40)
    at Object.invoke (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/module-runner.js:610:34)
    at Object.invoke (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/module-runner.js:671:34)
    at SSRCompatModuleRunner.getModuleInformation (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/module-runner.js:1192:94) {
  stack: "Error: Cannot find module '~/lib/logger.ts' imported from '/Users/andrew.kaiser/Code/andykais/forager/monorepo/packages/core/src/context.ts'\n" +
    "    at fetchModule (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/chunks/dep-ByPKlqZ5.js:52036:19)\n" +
    "    at RunnableDevEnvironment.fetchModule (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/chunks/dep-ByPKlqZ5.js:53130:12)\n" +
    "    at fetchModule (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/chunks/dep-ByPKlqZ5.js:53088:21)\n" +
    "    at handleInvoke (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/chunks/dep-ByPKlqZ5.js:44492:28)\n" +
    "    at EventEmitter.listenerForInvokeHandler (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/chunks/dep-ByPKlqZ5.js:44565:25)\n" +
    "    at EventEmitter.emit (ext:deno_node/_events.mjs:393:28)\n" +
    "    at Object.send (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/chunks/dep-ByPKlqZ5.js:30829:40)\n" +
    "    at Object.invoke (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/module-runner.js:610:34)\n" +
    "    at Object.invoke (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/module-runner.js:671:34)\n" +
    "    at SSRCompatModuleRunner.getModuleInformation (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/module-runner.js:1192:94)",
  name: "Error",
  code: "ERR_MODULE_NOT_FOUND",
  runnerError: Error: RunnerError
    at reviveInvokeError (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/module-runner.js:541:18)
    at Object.invoke (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/module-runner.js:624:15)
    at async SSRCompatModuleRunner.getModuleInformation (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/module-runner.js:1192:73)
    at async request (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/module-runner.js:1214:88)
    at async eval (/Users/andrew.kaiser/Code/andykais/forager/monorepo/packages/core/src/context.ts, <anonymous>:3:44)
    at async ESModulesEvaluator.runInlinedModule (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/module-runner.js:1049:5)
    at async SSRCompatModuleRunner.directRequest (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/module-runner.js:1271:61)
    at async SSRCompatModuleRunner.directRequest (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/chunks/dep-ByPKlqZ5.js:30913:23)
    at async SSRCompatModuleRunner.cachedRequest (file:///Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/vite@6.2.0/node_modules/vite/dist/node/module-runner.js:1167:76)
    at async eval (deno::TypeScript::@forager/core::/Users/andrew.kaiser/Code/andykais/forager/monorepo/packages/core/src/mod.ts, <anonymous>:3:44)
}
Error: Not found: /favicon.ico
    at resolve (/Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/@sveltejs+kit@2.17.3/node_modules/@sveltejs/kit/src/runtime/server/respond.js, <anonymous>:438:18)
    at resolve (/Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/@sveltejs+kit@2.17.3/node_modules/@sveltejs/kit/src/runtime/server/respond.js, <anonymous>:273:34)
    at Object.eval [as handle] (/Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/@sveltejs+kit@2.17.3/node_modules/@sveltejs/kit/src/runtime/server/index.js, <anonymous>:78:56)
    at respond (/Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/@sveltejs+kit@2.17.3/node_modules/@sveltejs/kit/src/runtime/server/respond.js, <anonymous>:271:42)
    at Object.runMicrotasks (ext:core/01_core.js:686:26)
    at processTicksAndRejections (ext:deno_node/_next_tick.ts:59:10)
    at runNextTicks (ext:deno_node/_next_tick.ts:76:3)
    at eventLoopTick (ext:core/01_core.js:184:21) {
  stack: "Error: Not found: /favicon.ico\n" +
    "    at resolve (/Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/@sveltejs+kit@2.17.3/node_modules/@sveltejs/kit/src/runtime/server/respond.js, <anonymous>:438:18)\n" +
    "    at resolve (/Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/@sveltejs+kit@2.17.3/node_modules/@sveltejs/kit/src/runtime/server/respond.js, <anonymous>:273:34)\n" +
    "    at Object.eval [as handle] (/Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/@sveltejs+kit@2.17.3/node_modules/@sveltejs/kit/src/runtime/server/index.js, <anonymous>:78:56)\n" +
    "    at respond (/Users/andrew.kaiser/Code/andykais/forager/monorepo/node_modules/.deno/@sveltejs+kit@2.17.3/node_modules/@sveltejs/kit/src/runtime/server/respond.js, <anonymous>:271:42)\n" +
    "    at Object.runMicrotasks (ext:core/01_core.js:686:26)\n" +
    "    at processTicksAndRejections (ext:deno_node/_next_tick.ts:59:10)\n" +
    "    at runNextTicks (ext:deno_node/_next_tick.ts:76:3)\n" +
    "    at eventLoopTick (ext:core/01_core.js:184:21)",
  status: 404,
  text: "Not Found"

is this expected behavior? I am wondering if I should refactor my repo to only use relative imports, or if this is just something that has yet to be implemented in this plugin.

Let me know if a full repro repo is necessary to help out here. I can add one if its useful, but if this is just a known thing that is not implemented in this plugin, I want to hold off on that

[andykais]

possibly related issue #19

[spy4x]

+1

[deep-c]

I have the same issue and usecase. Basically i use the same @/ as an alias to the root src in my monorepo across packages. Have you found a workaround besides using relative imports?

[spy4x]

@deep-c I ended up avoiding workspaces feature for now and have only a single root deno.jsonc file that lists all dependencies and all aliases.
This way both hono.js app, fresh app, vite+preact app are working fine.
It's not as ideal solution as working workspaces resolution be, but it works.
Working example (app is WIP): https://github.com/spy4x/financy/blob/main/deno.jsonc#L66

[robertjpayne]

I found this issue was due to workspace package names being @ e.g. @myorg/packagename and having an alias for @/ in combination.

Simply renaming local packages to just packagename and dropping the @myorg/ prefix resolved it.

[andykais]

I am creating a separate issue here that is likely related #77. It goes beyond just import aliases though, so I figured I should break this out