Fails with cannot find module 'anltr4/index' with antlr4 4.9

[dmaffitt]

All is well with antlr4 4.8.0 but updating to 4.9 causes the following. I'm brand new in the javascript world so not very effective in debugging this. It seems there was an issue like this in 2018 #14. The only change I made was bumping antlr4 from 4.8 to 4.9.

yarn run v1.19.2
$ antlr4-tool --output-dir src/parser --language typescript grammar/DE6Parser.g4 grammar/DE6Lexer.g4 grammar/TagPath.g4
Compiling grammar/DE6Parser.g4, grammar/DE6Lexer.g4, grammar/TagPath.g4...
internal/modules/cjs/loader.js:883
throw err;
^

Error: Cannot find module 'antlr4/index'
Require stack:

• /Users/drm/projects/nrg/dicomeditjs/de6js/node_modules/antlr4-tool/dist/antlr-core/parser-util.js
• /Users/drm/projects/nrg/dicomeditjs/de6js/node_modules/antlr4-tool/dist/antlr-core/antlr-compiler.js
• /Users/drm/projects/nrg/dicomeditjs/de6js/node_modules/antlr4-tool/dist/antlr-core/index.js
• /Users/drm/projects/nrg/dicomeditjs/de6js/node_modules/antlr4-tool/dist/compile.js
• /Users/drm/projects/nrg/dicomeditjs/de6js/node_modules/antlr4-tool/dist/cli.js
• /Users/drm/projects/nrg/dicomeditjs/de6js/node_modules/antlr4-tool/dist/app.js
  at Function.Module._resolveFilename (internal/modules/cjs/loader.js:880:15)
  at Function.resolve (internal/modules/cjs/helpers.js:94:19)
  at vmRequire (/Users/drm/projects/nrg/dicomeditjs/de6js/node_modules/antlr4-tool/dist/antlr-core/parser-util.js:24:32)
  at evalmachine.:3:14
  at Script.runInContext (vm.js:142:18)
  at Object.runInContext (vm.js:293:6)
  at Object.readParser (/Users/drm/projects/nrg/dicomeditjs/de6js/node_modules/antlr4-tool/dist/antlr-core/parser-util.js:28:8)
  at AntlrCompiler.compileTypeScript (/Users/drm/projects/nrg/dicomeditjs/de6js/node_modules/antlr4-tool/dist/antlr-core/antlr-compiler.js:66:37)
  at /Users/drm/projects/nrg/dicomeditjs/de6js/node_modules/antlr4-tool/dist/antlr-core/index.js:40:78
  at /Users/drm/projects/nrg/dicomeditjs/de6js/node_modules/antlr4-tool/dist/antlr-core/index.js:17:23 {
  code: 'MODULE_NOT_FOUND',
  requireStack: [
  '/Users/drm/projects/nrg/dicomeditjs/de6js/node_modules/antlr4-tool/dist/antlr-core/parser-util.js',
  '/Users/drm/projects/nrg/dicomeditjs/de6js/node_modules/antlr4-tool/dist/antlr-core/antlr-compiler.js',
  '/Users/drm/projects/nrg/dicomeditjs/de6js/node_modules/antlr4-tool/dist/antlr-core/index.js',
  '/Users/drm/projects/nrg/dicomeditjs/de6js/node_modules/antlr4-tool/dist/compile.js',
  '/Users/drm/projects/nrg/dicomeditjs/de6js/node_modules/antlr4-tool/dist/cli.js',
  '/Users/drm/projects/nrg/dicomeditjs/de6js/node_modules/antlr4-tool/dist/app.js'
  ]
  }
  error Command failed with exit code 1.

[frankjar]

hi, doing the same here.

Totally new project with no typescript just "JavaScript" as language for generation :

• antlr4 4.9.0 with the CSV grammar : trash with the same error
• antlr4 4.8.0 with the CSV grammar : fine !

I'm using the VS Code extension https://github.com/mike-lischke/vscode-antlr4

hoping it is useful

thanks

[quantrpeter]

is it fix?

[frankjar]

I was using the VS Code extension, without it works for v4.9 (compilation on the demand so not automatic). May be i'm not sure how to use the extension or the extension is not compatible yet with the last version of antlr. Frank Le 17/02/2021 à 18:45, Peter a écrit :

…

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[billbarni]

I have this problem. Can't get around it. No matter how I generate, there are several problems impeding the usage.

[iosonoagenda]

Same problem.

• OS: Ubuntu 21.10
• antlr4-tool: 1.1.1
• antlr4: 4.10.0

Any fix?