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Cannot build esbuild bundle

See original GitHub issue

Describe the bug It appears the path used in

<script data-entry-point type="module" src="./App.js"></script>

Needs to exist on disk for esbuild to find it.

To Reproduce

I have a config like this:

  "$schema": "",
  "index": "./index.html",
  "fable": {
    "project": "./src/MyProject.App/MyProject.App.fsproj",
    "extension": ".js",
    "outDir": "./out"
  "devServer": {
    "port": 8900,
    "mountDirectories": {
      "./out": "",
      "./out/fable_modules": "/fable_modules",
      "./images": "/images"
    "useSSL": true,
    "watchConfig": {
        "directories": [ "./out", "./images" ]
    "liveReload": true

I’m mounting the physical out folder on the root and then i"m pointing my src="./App.js" of my data-entry-point to it.

Expected behaviour It would be nice if there was some validation of whether the file passed to esbuild exists. If it doesn’t, it could look into the physical folder (out in my case) that is mapped to the root of the dev server.

Desktop (please complete the following information):

  • OS: Windows

Additional context Add any other context about the problem here.

Mounting "./out": "", doesn’t appear to include any subfolders. This might be a different bug or expected behaviour, I’m not sure.

Issue Analytics

  • State:closed
  • Created a year ago
  • Comments:8 (8 by maintainers)

github_iconTop GitHub Comments

nojafcommented, Aug 22, 2022

What version are you on?

I’m on 0.22.1

Thanks for the quick response.

AngelMunozcommented, Aug 26, 2022

The new version has been released! Once again thanks for this contribution

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