I'm getting this error Cannot read properties of null (reading 'program')

[sibelius]

• Cannot read properties of null (reading 'program')

at BarrelFilesMapping.createSpecifiersMapping (../../node_modules/babel-plugin-transform-barrels/src/barrel.js:129:15)
      at BarrelFilesMapping.getDirectSpecifierObject (../../node_modules/babel-plugin-transform-barrels/src/barrel.js:187:12)
      at ../../node_modules/babel-plugin-transform-barrels/src/barrel.js:206:45
          at Array.map (<anonymous>)
      at PluginPass.importDeclarationVisitor (../../node_modules/babel-plugin-transform-barrels/src/barrel.js:204:61)

I'm using this in a monorepo, similar to https://github.com/sibelius/relay-workshop

[FogelAI]

Hi @sibelius

I have released a new version of the plugin (v1.0.9) that adds support for workspaces. This update should resolve your issue.

Please update your version and let me know if it resolves your issue.

Thanks

[sibelius]

still breaking

at BarrelFilesMapping.createSpecifiersMapping (../../node_modules/babel-plugin-transform-barrels/src/barrel.js:182:15)
      at BarrelFilesMapping.getDirectSpecifierObject (../../node_modules/babel-plugin-transform-barrels/src/barrel.js:240:12)
      at ../../node_modules/babel-plugin-transform-barrels/src/barrel.js:260:45
          at Array.map (<anonymous>)
      at PluginPass.importDeclarationVisitor (../../node_modules/babel-plugin-transform-barrels/src/barrel.js:258:61)
      at call (../../node_modules/@babel/traverse/src/visitors.ts:293:14)
      at NodePath.call [as _call] (../../node_modules/@babel/traverse/src/path/context.ts:35:20)
      at NodePath._call [as call] (../../node_modules/@babel/traverse/src/path/context.ts:20:17)
      at NodePath.call [as visit] (../../node_modules/@babel/traverse/src/path/context.ts:94:31)
      at TraversalContext.visit [as visitQueue] (../../node_modules/@babel/traverse/src/context.ts:144:16)
      at TraversalContext.visitQueue [as visitMultiple] (../../node_modules/@babel/traverse/src/context.ts:98:17)
      at TraversalContext.visitMultiple [as visit] (../../node_modules/@babel/traverse/src/context.ts:174:19)
      at visit (../../node_modules/@babel/traverse/src/traverse-node.ts:40:17)
      at NodePath.visit (../../node_modules/@babel/traverse/src/path/context.ts:101:33)
      at TraversalContext.visit [as visitQueue] (../../node_modules/@babel/traverse/src/context.ts:144:16)
      at TraversalContext.visitQueue [as visitSingle] (../../node_modules/@babel/traverse/src/context.ts:108:19)
      at TraversalContext.visitSingle [as visit] (../../node_modules/@babel/traverse/src/context.ts:176:19)
      at visit (../../node_modules/@babel/traverse/src/traverse-node.ts:40:17)
      at traverse (../../node_modules/@babel/traverse/src/index.ts:82:15)
      at transformFile (../../node_modules/@babel/core/src/transformation/index.ts:124:15)
          at transformFile.next (<anonymous>)
      at transformFile (../../node_modules/@babel/core/src/transformation/index.ts:48:12)
          at run.next (<anonymous>)
      at transform (../../node_modules/@babel/core/src/transform.ts:29:20)
          at transform.next (<anonymous>)
      at evaluateSync (../../node_modules/gensync/index.js:251:28)

try on relay-workshop

[sibelius]

another error

Cannot read properties of undefined (reading 'absEsmFile')

at PluginPass.importDeclarationVisitor (../../node_modules/babel-plugin-transform-barrels/src/main.js:15:79)
      at call (../../node_modules/@babel/traverse/src/visitors.ts:304:14)
      at NodePath.call [as _call] (../../node_modules/@babel/traverse/src/path/context.ts:36:20)
      at NodePath.call (../../node_modules/@babel/traverse/src/path/context.ts:21:18)
      at NodePath.call [as visit] (../../node_modules/@babel/traverse/src/path/context.ts:95:31)
      at TraversalContext.visit [as visitQueue] (../../node_modules/@babel/traverse/src/context.ts:147:16)
      at TraversalContext.visitQueue [as visitMultiple] (../../node_modules/@babel/traverse/src/context.ts:98:17)
      at TraversalContext.visitMultiple [as visit] (../../node_modules/@babel/traverse/src/context.ts:177:19)
      at visit (../../node_modules/@babel/traverse/src/traverse-node.ts:40:17)
      at NodePath.visit (../../node_modules/@babel/traverse/src/path/context.ts:102:33)
      at TraversalContext.visit [as visitQueue] (../../node_modules/@babel/traverse/src/context.ts:147:16)
      at TraversalContext.visitQueue [as visitSingle] (../../node_modules/@babel/traverse/src/context.ts:108:19)
      at TraversalContext.visitSingle [as visit] (../../node_modules/@babel/traverse/src/context.ts:179:19)
      at visit (../../node_modules/@babel/traverse/src/traverse-node.ts:40:17)
      at traverse (../../node_modules/@babel/traverse/src/index.ts:82:15)
      at transformFile (../../node_modules/@babel/core/src/transformation/index.ts:124:15)
          at transformFile.next (<anonymous>)
      at transformFile (../../node_modules/@babel/core/src/transformation/index.ts:48:12)
          at run.next (<anonymous>)
      at transform (../../node_modules/@babel/core/src/transform.ts:29:20)
          at transform.next (<anonymous>)
      at evaluateSync (../../node_modules/gensync/index.js:251:28)
      at sync (../../node_modules/gensync/index.js:89:14)
      at fn (../../node_modules/@babel/core/src/errors/rewrite-stack-trace.ts:99:14)
      at transformSync (../../node_modules/@babel/core/src/transform.ts:66:52)
      at Object.process (../testutils/babelBarrel.js:32:29)
      at ScriptTransformer.transformSource (../../node_modules/@jest/transform/build/ScriptTransformer.js:545:31)
      at ScriptTransformer._transformAndBuildScript (../../node_modules/@jest/transform/build/ScriptTransformer.js:674:40)
      at ScriptTransformer.transform (../../node_modules/@jest/transform/build/ScriptTransformer.js:726:19)

[srosato]

I get the same error and I am trying to figure out what part of my code leads to Cannot read properties of undefined (reading 'absEsmFile')

[FogelAI]

Hi @srosato
Is this a public project? If so, could you share the repository?
Please enable the logging to a file option and add the log file here.

[cmsautter]

Not sure if I should create a new ticket for this, but the Cannot read properties of undefined (reading 'absEsmFile') error is quite common whenever the plugin fails. I've encountered this issue a few times and created a fork to address them. These are more "fixes" than full solutions, as I don't completely understand what's happening:

main...cmfrydos:babel-plugin-transform-barrels:main

Two specific issues I’ve noticed and 'fixed':

• The plugin has trouble with ?raw imports.
• It also struggles with this type of export: module.exports.default = StyleToObject; // ESM support.

Without these fixes, the public "Bitburner" repo is not compatible with the plugin: https://github.com/bitburner-official/bitburner-src

I've also noticed potential issues with AST source-map generation, which I’m currently looking into.

[FogelAI]

Hi @cmfrydos

I have released a new version of the plugin (v1.0.17) that should resolve your issues.

Please try it and let me know if it resolves your issues.

Could you provide more information about potential issues with the AST source map that you have noticed?

Thanks

[cmsautter]

Hello @FogelAI,
Thank you very much! The new version is working perfectly now, and your solution looks much cleaner than mine. I was trying to figure it out but couldn't really understand what was actually happening.

Regarding the source maps: I noticed that the line numbers where I set breakpoints in my tests in VS Code and where it would actually stop were different. I then assumed that the source maps might have been generated incorrectly. However, this occurred while I was changing the plugin's code or configuration without performing a full Jest cache clear in between.

It was only later that I realized cached results were the cause of many of the headaches I had. After consistently resetting the cache and applying the "fixes" to make the plugins work, I could no longer replicate the strange behavior during debugging.

So, it's quite likely that everything was actually working fine. On the other hand, I've read that when inserting nodes in the AST, they should retain the line numbers of their original counterparts to ensure the source maps are generated correctly. I'm no expert on this, so I cannot say whether this is right. This might be something to keep in mind if someone encounters an issue with breakpoints/line numbers that can actually be reproduced.

[FogelAI]

@cmfrydos You're welcome :)

@srosato @sibelius Please check if it works for you now with the new version (1.0.17).

[anilanar]

We have the same problem with 1.0.17.

In a very simplified manner, we have this file:

// foo/index.tsx
export * from '@emotion/react';

and then

// bar.tsx
import { css } from './foo';

It throws the error when trying to process bar.tsx.

[FogelAI]

Hi @anilanar
I fixed your issue in the new version (1.0.18).
Please check it and let me know if it resolves your issue.

[constgen]

Hi. We use 1.0.18 and still have this issue on the very first entry point

ERROR in ./src/index.js
Module build failed (from ./node_modules/.pnpm/babel-loader@9.1.3_@babel+core@7.24.9_webpack@5.93.0/node_modules/babel-loader/lib/index.js):
TypeError: C:\Projects\Project_name\src\index.js: Cannot read properties of undefined (reading 'absEsmFile')
    at PluginPass.importDeclarationVisitor (C:\Projects\Projects_Deved\drop-frontend\node_modules\.pnpm\babel-plugin-transform-barrels@1.0.18\node_modules\babel-plugin-transform-barrels\src\main.js:24:79)

[FogelAI]

Hi @constgen
Is this a public project? If so, could you share the repository?

[constgen]

Unfortunately it is private and I can not share the source code

[constgen]

But I think I can show you the full list of imports in src/index.js

import "./wdyr";
import "services/sentry";
import React from "react";
import { createRoot } from "react-dom/client";
import smoothscroll from "smoothscroll-polyfill";
import ReactList from "react-list";
import syncState from "store/syncState";

import Root from "root";
import { findScrollParent } from "utils/dom";
import store from "./store/Store";
import "services/sw";