Migrate from deprecated nvim-treesitter.ts_utils to built-in APIs (main branch compatibility)

[Starslayerx]

This update modernizes the plugin SUSTech-data/wildfire.nvim to ensure full compatibility with the latest nvim-treesitter, following its migration from the deprecated master branch to the new main branch and the removal of the ts_utils module.

🔧 Changes

• Removed dependency on the deprecated nvim-treesitter.ts_utils module
• Replaced ts_utils.get_node_at_cursor() with vim.treesitter.get_node()
• Replaced ts_utils.get_vim_range() with vim.treesitter.get_node_range()
• Replaced ts_utils.get_node_text() with vim.treesitter.get_node_text()
• Added proper coordinate conversion from 0-based to 1-based indexing
• Ensured compatibility with modern nvim-treesitter and Neovim 0.10+

The legacy master branch remains available for users on older Neovim or nvim-treesitter versions.
This main branch provides an updated, forward-compatible version for users who have migrated to the latest ecosystem.

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💡 Suggestion for Maintainers — Create a main Branch

Since nvim-treesitter itself has transitioned to a main branch and deprecated legacy helpers, it would be helpful if this repository also provided a main branch for updated code.
This would allow:

• master → legacy users (older Treesitter / Neovim)
• main → modern Treesitter API users

Maintainers can create a new main branch directly on GitHub using the "Branch" button, or via Git locally if preferred.

Once the branch exists, this PR can be retargeted from master → main before merging.

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📦 Temporary Installation for Users

Until the main branch is available upstream, users can install the updated fork directly with Lazy.nvim:

  {
    "Starslayerx/wildfire.nvim",
    branch = "main",
    event = "VeryLazy",
    dependencies = { "nvim-treesitter/nvim-treesitter" },
  }

This setup ensures both legacy and modern Neovim users can choose the version that best fits their environment — without breaking compatibility.

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Thank you for maintaining SUSTech-data/wildfire.nvim.
This PR aims to simplify the transition for users upgrading to modern Treesitter while keeping backward compatibility for existing setups.

[Copilot]

Pull Request Overview

This PR modernizes the wildfire.nvim plugin to be compatible with the latest nvim-treesitter by migrating away from the deprecated ts_utils module to built-in Neovim treesitter APIs.

• Replaces deprecated ts_utils functions with their built-in equivalents
• Adds proper coordinate conversion from 0-based to 1-based indexing
• Updates treesitter parser access methods

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
lua/wildfire/utils.lua	Migrates from ts_utils to built-in APIs and adds coordinate conversion logic
lua/wildfire/init.lua	Updates node selection and parser access to use modern treesitter APIs

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[Copilot]

This line still imports and uses the deprecated ts_utils module, contradicting the PR's goal of removing this dependency. Replace with vim.treesitter.get_node() to be consistent with the migration.

Suggested change

	local node = require("nvim-treesitter.ts_utils").get_node_at_pos(0)
	local node = vim.treesitter.get_node({ bufnr = 0 })

[fecet]

Thanks!