feat(pack): add prettier pack

lua/astrocommunity/pack/prettier/README.md

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+# Prettier
+
+[Prettier](https://prettier.io/) is an opinionated code formatter with support for:
+
+JavaScript · TypeScript · Flow · JSX · JSON
+CSS · SCSS · Less
+HTML · Vue · Angular
+GraphQL · Markdown · YAML
+[Your favorite language?](https://prettier.io/docs/plugins)
+
+It enforces a consistent style by parsing your code and re-printing it with its own rules that take the maximum line length into account, wrapping code when necessary.

lua/astrocommunity/pack/prettier/init.lua

@@ -0,0 +1,161 @@
+local format_filetypes = {
+  "css",
+  "graphql",
+  "handlebars",
+  "html",
+  "javascript",
+  "javascriptreact",
+  "json",
+  "json5",
+  "jsonc",
+  "less",
+  "markdown",
+  "markdown.mdx",
+  "scss",
+  "typescript",
+  "typescriptreact",
+  "vue",
+  "yaml",
+}
+
+local lsp_rooter_cache, prettierrc_rooter_cache
+
+local function get_lsp_rooter()
+  if not lsp_rooter_cache then
+    lsp_rooter_cache = require("astrocore.rooter").resolve("lsp", {
+      ignore = {
+        servers = function(client)
+          return not vim.tbl_contains({
+            "eslint",
+            "ts_ls",
+            "typescript-tools",
+            "volar",
+            "vtsls",
+          }, client.name)
+        end,
+      },
+    })
+  end
+  return lsp_rooter_cache
+end
+
+local prettier_files = {
+  ".prettierrc",
+  ".prettierrc.json",
+  ".prettierrc.json5",
+  ".prettierrc.yaml",
+  ".prettierrc.yml",
+  ".prettierrc.toml",
+  ".prettierrc.cjs",
+  ".prettierrc.js",
+  ".prettierrc.mjs",
+  ".prettierrc.ts",
+  ".prettierrc.mts",
+  ".prettierrc.cts",
+  "prettier.config.js",
+  "prettier.config.cjs",
+  "prettier.config.mjs",
+  "prettier.config.ts",
+  "prettier.config.mts",
+}
+
+local function get_prettierrc_rooter()
+  if not prettierrc_rooter_cache then prettierrc_rooter_cache = require("astrocore.rooter").resolve(prettier_files) end
+  return prettierrc_rooter_cache
+end
+
+local function decode_json(filename)
+  local file = io.open(filename, "r")
+  if not file then return false end
+  local content = file:read "*all"
+  file:close()
+  local ok, json = pcall(vim.fn.json_decode, content)
+  if not ok or type(json) ~= "table" then return false end
+  return json
+end
+
+local function check_json_key_exists(json, ...) return vim.tbl_get(json, ...) ~= nil end
+
+local function has_prettier(bufnr)
+  if type(bufnr) ~= "number" then bufnr = vim.api.nvim_get_current_buf() end
+
+  local prettier_dependency = false
+
+  local lsp_rooter = get_lsp_rooter()
+  local search_roots = require("astrocore").list_insert_unique(lsp_rooter(bufnr) or {}, { vim.fn.getcwd() })
+
+  for _, root in ipairs(search_roots) do
+    local package_json_path = root .. "/package.json"
+    if vim.fn.filereadable(package_json_path) == 1 then
+      local package_json = decode_json(package_json_path)
+      if
+        package_json
+        and (
+          check_json_key_exists(package_json, "dependencies", "prettier")
+          or check_json_key_exists(package_json, "devDependencies", "prettier")
+        )
+      then
+        prettier_dependency = true
+        break
+      end
+    end
+  end
+
+  if prettier_dependency then return true end
+
+  local prettierrc_root = get_prettierrc_rooter()(bufnr)
+  return prettierrc_root and next(prettierrc_root) ~= nil
+end
+
+local null_ls_formatter = function(params)
+  if vim.tbl_contains(format_filetypes, params.filetype) then return has_prettier(params.bufnr) end
+  return true
+end
+
+local conform_formatter = function(bufnr) return has_prettier(bufnr) and { "prettierd" } or {} end
+
+---@type LazySpec
+return {
+  {
+    "jay-babu/mason-null-ls.nvim",
+    optional = true,
+    opts = function(_, opts)
+      opts.ensure_installed = require("astrocore").list_insert_unique(opts.ensure_installed or {}, { "prettierd" })
+      if not opts.handlers then opts.handlers = {} end
+
+      opts.handlers.prettierd = function(source_name, methods)
+        local null_ls = require "null-ls"
+        for _, method in ipairs(methods) do
+          null_ls.register(null_ls.builtins[method][source_name].with { runtime_condition = null_ls_formatter })
+        end
+      end
+    end,
+  },
+  {
+    "stevearc/conform.nvim",
+    optional = true,
+    opts = function(_, opts)
+      if not opts.formatters_by_ft then opts.formatters_by_ft = {} end
+      for _, filetype in ipairs(format_filetypes) do
+        opts.formatters_by_ft[filetype] = conform_formatter
+      end
+    end,
+  },
+  {
+    "WhoIsSethDaniel/mason-tool-installer.nvim",
+    optional = true,
+    opts = function(_, opts)
+      opts.ensure_installed = require("astrocore").list_insert_unique(opts.ensure_installed or {}, { "prettierd" })
+    end,
+  },
+  {
+    "echasnovski/mini.icons",
+    optional = true,
+    opts = function(_, opts)
+      if not opts.file then opts.file = {} end
+      for _, filename in ipairs(prettier_files) do
+        opts.file[filename] = { glyph = "", hl = "MiniIconsPurple" }
+      end
+    end,
+  },
+}