feat: add JSON output for query()

lua/frecency/database.lua

@@ -265,4 +265,8 @@ function Database:file_lock()
   return self._file_lock
 end
 
+function Database:sync()
+  self.tbl:sync()
+end
+
 return Database

lua/frecency/database/table.lua

@@ -1,4 +1,5 @@
 local timer = require "frecency.timer"
+local wait = require "frecency.wait"
 local lazy_require = require "frecency.lazy_require"
 local async = lazy_require "plenary.async" --[[@as FrecencyPlenaryAsync]]
 
@@ -57,4 +58,16 @@ function Table:wait_ready()
   timer.track "wait_ready() finish"
 end
 
+function Table:sync()
+  timer.track "Table:sync() start"
+  if rawget(self, "is_ready") then
+    timer.track "Table:sync() unneeded"
+    return
+  end
+  wait(function()
+    self:wait_ready()
+  end)
+  timer.track "Table:sync() finish"
+end
+
 return Table

lua/frecency/klass.lua

@@ -200,6 +200,7 @@ end
 
 ---@class FrecencyQueryOpts
 ---@field direction? "asc"|"desc" default: "desc"
+---@field json? boolean default: false
 ---@field limit? integer default: 100
 ---@field order? FrecencyQueryOrder default: "score"
 ---@field record? boolean default: false
@@ -213,14 +214,16 @@ end
 
 ---@param opts? FrecencyQueryOpts
 ---@param epoch? integer
----@return FrecencyQueryEntry[]|string[]
+---@return string|FrecencyQueryEntry[]|string[]
 function Frecency:query(opts, epoch)
   opts = vim.tbl_extend("force", {
     direction = "desc",
+    json = false,
     limit = 100,
     order = "score",
     record = false,
   }, opts or {})
+  self.database:sync()
   ---@param entry FrecencyDatabaseEntry
   local entries = vim.tbl_map(function(entry)
     return {
@@ -235,9 +238,9 @@ function Frecency:query(opts, epoch)
     return entry.path
   end, entries)
   if #results > opts.limit then
-    return vim.list_slice(results, 1, opts.limit)
+    results = vim.list_slice(results, 1, opts.limit)
   end
-  return results
+  return opts.json and vim.json.encode(results) or results
 end
 
 ---@private