Feature Request: Support for `cspell.json` Configuration File.

[hungvx-dev]

Many projects use cspell for spell checking and rely on the cspell.json configuration file to customize dictionaries, ignore patterns, and other settings. However, typos-lsp currently only supports typos.toml (or similar) configuration files, which requires users to manually convert their cspell.json settings to typos.toml. This can be inconvenient for users who already have an existing cspell.json configuration or prefer cspell's configuration format.

• I am using typos-lsp with Neovim for a Luau project, and integrating existing cspell.json files would streamline my workflow.
• This feature would benefit users who want to leverage typos-lsp's low false-positive spell checking while maintaining their existing cspell configurations.
• I am happy to provide further details or assist with testing this feature.

This is a scheme json file
Scheme

Thank you for considering this request!

[tekumara]

Hi @hungvx-dev while I can see this might provide some convenience I'm not sure about this. It could only be a very partial solution because cspell is so different to typos, ie: it has a dictionary but typos doesn't. Which parts of cspell.json do you see as relevant to typos?

[hungvx-dev]

@tekumara
Thanks for the reply!

To clarify my request — I’m not suggesting that typos-lsp should replicate cspell’s dictionary system or behavior.
My goal is simply to make migration smoother for existing projects that already use cspell.json for basic configuration.

Many repositories (especially JS/TS or Luau projects) already maintain a cspell.json that defines:

• "ignorePaths" (files/folders to skip)
• "words" (custom allow-list)
• "ignoreRegExpList" (patterns to ignore)

It would be great if typos-lsp could optionally:

• detect cspell.json in the workspace root
• parse these compatible fields
• and apply them as if they were defined in .typos.toml

Example mapping:

// cspell.json
{
  "ignorePaths": ["node_modules", "dist"],
  "words": ["Neovim", "Luau", "serde"]
}

→ equivalent to:

[files]
extend-exclude = ["node_modules", "dist"]
[default]
extend-ignore-words = ["Neovim", "Luau", "serde"]

This doesn’t require implementing cspell’s dictionaries — just reading a few keys from a JSON file to ease migration.

I believe this small compatibility layer would make typos-lsp more accessible to many developers who want to switch from cspell but already have existing configs.

I’d be happy to help test or contribute a simple parser if you think this idea makes sense.