upgrading from v3 to v4 breaks build for TS projects about esbuild-loader HOT 11 OPEN

So after much testing, I think I understand a little bit more of how this is happening.

If esbuild-loader is involved in transpilation of a file that happens to import something that your tsconfig.json did not include in its options, it will throw this warning.

E.g. If you have a .tsx file that imports an svg that you are later processing with another loader (@svgr/webpack for example), it will read and process that svg import and will try to apply the tsconfig.json in your project to that particular file as well.

This may be a good warning for the sake of clarity, but it's also a little bit unexpected in my opinion. This was added in V4. https://github.com/privatenumber/esbuild-loader/releases/tag/v4.0.0

To immediately fix this, you can add the tsConfigRaw: {} to the loader options though be careful if you need specific TS options added. Here's an example following my situation

// Checks for SVG imports inside js(x) files
{
  test: /\.svg$/,
  exclude: /node_modules/,
  issuer: {
    test: /\.tsx?$/,
  },
  use: [
    {
      loader: 'esbuild-loader',
      options: {
        loader: 'tsx',
        tsconfigRaw: {},
      },
    },
    {
      loader: '@svgr/webpack',
      options: { ... },
    },
    {
      loader: 'url-loader',
      options: { ... },
    },
  ],
},

Also here are two suggestions I'd propose. If @privatenumber agrees, I wouldn't mind contributing a PR to modify some things too.

1. Adding a separate config flag to hide these warnings. This warning can break builds / pipelines that don't allow warnings.
2. If the v4 functionality was added to handle cases of multiple tsconfigs, perhaps the newer logic could apply when there are multiple tsConfigs? Perhaps this is something that can be changed via a flag as well?

from esbuild-loader.

• It's a warning (not an error), so I believe the build should succeed
• Have you tried including the file in the tsconfig as the warning suggests?
• https://github.com/vritant24/webpack-esbuild-loader-4-repro 404s for me so I can't see it

from esbuild-loader.

Thanks for the quick reply!

Apologies I accidentally made private repo. Fixed that. I hope the repo elaborates my issue better

• the tsconfig is included, and the files are included as part of referenced tsconfigs
• There is a Warning, but it also comes as an error underneath, which fails our build:

WARNING in ./src/desktop/main.ts
  Module Warning (from ./node_modules/esbuild-loader/dist/index.cjs):
  [esbuild-loader] The specified tsconfig at "C:\repos\webpack-esbuild-loader-4-repro\tsconfig.json" was applied to the file "C:\repos\webpack-esbuild-loader-4-repro\src\desktop\main.ts" but does not match its "include" patterns
  Error: [esbuild-loader] The specified tsconfig at "C:\repos\webpack-esbuild-loader-4-repro\tsconfig.json" was applied to the file "C:\repos\webpack-esbuild-loader-4-repro\src\desktop\main.ts" but does not match its "include" patterns
      at Object.ESBuildLoader (C:\repos\webpack-esbuild-loader-4-repro\node_modules\esbuild-loader\dist\index.cjs:60:11)

from esbuild-loader.

I was migrating a Typescript+Webpack+Babel loader monorepo with the references section in a tsconfig of the application host file and faced exactly same issue. The sub-packages I have under the references section are compiled with the same error.

from esbuild-loader.

The warning reads like esbuild knows what to do (don't apply the tsconfig to the file) but is just letting you know it is going to do it anyway.

I thought I needed to figure out how to configure things so that the tsconfig isn't applied to the file (mine is in node_modules), but @privatenumber seems to be suggesting that the opposite is what is required.

from esbuild-loader.

Feel free to open a PR

from esbuild-loader.

Feel free to open a PR

Maybe once I figure out what the warning is trying to tell me.

from esbuild-loader.

If you need help, you'll have to provide a minimal reproduction at the least. Otherwise, there's nothing for anyone to debug.

from esbuild-loader.

@dons20

I appreciate you contributing constructively!

Here are the problems I see:

• The warning should not block the build. But since esbuild-loader is simply using Webpacks this.emitWarning method, this should be handled on Webpacks side. Maybe these will help:

  • https://webpack.js.org/configuration/stats/#statswarnings
  • https://webpack.js.org/configuration/other-options/#ignorewarnings (I believe this is Webpack's preferred method)

• The warning is actually inaccurate (TypeScript incompatibility)

  So until recently, I was under the misconception that tsconfig.json only applies to files specified in files & includes. This is actually incorrect. Even if only one file is specified, it also implicitly applies to everything that file imports: https://stackblitz.com/edit/stackblitz-starters-vvvjft?file=tsconfig.json

  That said, there is also a TypeScript compatibility bug here. It should only check for tsconfigs in the entry files and apply that config to the rest of the files in the dependency tree.

I'm open to the following PRs:

• Test that emits this warning and shows that it fails. And another test that confirms Webpack configuration can suppress this warning.
• Fix for the tsconfig.json matching bug and test

from esbuild-loader.