Formatting adds extra lines of code.

[kaykhan]

Hi friends,

Im having an issue with lsp format duplicating lines of code. Can anyone tell me why this is happening and how i can fix it? It occurs whenever i format the code. Initally thought it was becuase i was formatting using async then i switched it to be sync and it still occurs.

https://streamable.com/fhfnof

vim.keymap.set("n", "<space>f", function()`
	`vim.lsp.buf.format({ timeout = 2000)`
`end, bufopts)

null-ls - https://github.com/kaykhan/.dotfiles/blob/master/.config/nvim/after/plugin/lsp/null-ls.lua
lsp-config - https://github.com/kaykhan/.dotfiles/blob/master/.config/nvim/after/plugin/lsp/lspconfig.lua

debug logs

[TRACE Tue 25 Jul 2023 20:34:12 BST] /home/kay/.local/share/nvim/site/pack/packer/start/null-ls.nvim/lua/null-ls/client.lua:97: starting null-ls client
[TRACE Tue 25 Jul 2023 20:34:12 BST] /home/kay/.local/share/nvim/site/pack/packer/start/null-ls.nvim/lua/null-ls/rpc.lua:106: received LSP request for method initialize
[TRACE Tue 25 Jul 2023 20:34:12 BST] /home/kay/.local/share/nvim/site/pack/packer/start/null-ls.nvim/lua/null-ls/rpc.lua:131: received LSP notification for method initialized
[TRACE Tue 25 Jul 2023 20:34:12 BST] /home/kay/.local/share/nvim/site/pack/packer/start/null-ls.nvim/lua/null-ls/rpc.lua:131: received LSP notification for method textDocument/didOpen
[TRACE Tue 25 Jul 2023 20:34:12 BST] /home/kay/.local/share/nvim/site/pack/packer/start/null-ls.nvim/lua/null-ls/generators.lua:21: running generators for method NULL_LS_DIAGNOSTICS_ON_OPEN
[DEBUG Tue 25 Jul 2023 20:34:12 BST] /home/kay/.local/share/nvim/site/pack/packer/start/null-ls.nvim/lua/null-ls/helpers/generator_factory.lua:321: spawning command "/home/kay//api-auth/node_modules/.bin/eslint" at /home/kay//api-auth with args { "-f", "json", "--stdin", "--stdin-filename", "/home/kay//api-auth/test.ts" }
[TRACE Tue 25 Jul 2023 20:34:13 BST] /home/kay/.local/share/nvim/site/pack/packer/start/null-ls.nvim/lua/null-ls/helpers/generator_factory.lua:205: error output: nil
[TRACE Tue 25 Jul 2023 20:34:13 BST] /home/kay/.local/share/nvim/site/pack/packer/start/null-ls.nvim/lua/null-ls/helpers/generator_factory.lua:206: output: [{"filePath":"/home/kay//api-auth/test.ts","messages":[{"ruleId":"prettier/prettier","severity":2,"message":"Delete `⏎⏎⏎⏎`","line":8,"column":1,"nodeType":null,"messageId":"delete","endLine":12,"endColumn":1,"fix":{"range":[130,134],"text":""}}],"suppressedMessages":[],"errorCount":1,"fatalErrorCount":0,"warningCount":0,"fixableErrorCount":1,"fixableWarningCount":0,"source":"const main = () => {\n    console.log(\"hello world\");\n};\n\nfunction someFunction(str: string, int: number) {\n    console.log(str);\n\n\n\n\n\n    return int + int;\n}\n\nmain();\n","usedDeprecatedRules":[]}]

[TRACE Tue 25 Jul 2023 20:34:13 BST] /home/kay/.local/share/nvim/site/pack/packer/start/null-ls.nvim/lua/null-ls/diagnostics.lua:181: received diagnostics from source 2
[TRACE Tue 25 Jul 2023 20:34:13 BST] /home/kay/.local/share/nvim/site/pack/packer/start/null-ls.nvim/lua/null-ls/diagnostics.lua:182: { {
    code = "prettier/prettier",
    col = 0,
    end_col = 0,
    end_lnum = 11,
    end_row = 12,
    lnum = 7,
    message = "Delete `⏎⏎⏎⏎` eslint(prettier/prettier)",
    row = 8,
    severity = 1,
    source = "eslint",
    user_data = {
      fixable = true
    }
  } }
[TRACE Tue 25 Jul 2023 20:34:18 BST] /home/kay/.local/share/nvim/site/pack/packer/start/null-ls.nvim/lua/null-ls/rpc.lua:106: received LSP request for method textDocument/formatting
[TRACE Tue 25 Jul 2023 20:34:18 BST] /home/kay/.local/share/nvim/site/pack/packer/start/null-ls.nvim/lua/null-ls/generators.lua:21: running generators for method NULL_LS_FORMATTING
[DEBUG Tue 25 Jul 2023 20:34:18 BST] /home/kay/.local/share/nvim/site/pack/packer/start/null-ls.nvim/lua/null-ls/helpers/generator_factory.lua:321: spawning command "/home/kay//api-auth/node_modules/.bin/eslint" at /home/kay//api-auth with args { "--fix-dry-run", "--format", "json", "--stdin", "--stdin-filename", "/home/kay//api-auth/test.ts" }
[TRACE Tue 25 Jul 2023 20:34:19 BST] /home/kay/.local/share/nvim/site/pack/packer/start/null-ls.nvim/lua/null-ls/helpers/generator_factory.lua:205: error output: nil
[TRACE Tue 25 Jul 2023 20:34:19 BST] /home/kay/.local/share/nvim/site/pack/packer/start/null-ls.nvim/lua/null-ls/helpers/generator_factory.lua:206: output: [{"filePath":"/home/kay//api-auth/test.ts","messages":[],"suppressedMessages":[],"errorCount":0,"fatalErrorCount":0,"warningCount":0,"fixableErrorCount":0,"fixableWarningCount":0,"output":"const main = () => {\n    console.log(\"hello world\");\n};\n\nfunction someFunction(str: string, int: number) {\n    console.log(str);\n\n    return int + int;\n}\n\nmain();\n","usedDeprecatedRules":[]}]

[DEBUG Tue 25 Jul 2023 20:34:19 BST] /home/kay/.local/share/nvim/site/pack/packer/start/null-ls.nvim/lua/null-ls/formatting.lua:89: received edits from generators
[TRACE Tue 25 Jul 2023 20:34:19 BST] /home/kay/.local/share/nvim/site/pack/packer/start/null-ls.nvim/lua/null-ls/formatting.lua:90: {
  newText = "    return int + int;\n}\n\nmain();",
  range = {
    ["end"] = {
      character = 0,
      line = 12
    },
    start = {
      character = 0,
      line = 7
    }
  },
  rangeLength = 26
}
[TRACE Tue 25 Jul 2023 20:34:19 BST] /home/kay/.local/share/nvim/site/pack/packer/start/null-ls.nvim/lua/null-ls/rpc.lua:131: received LSP notification for method textDocument/didChange
[TRACE Tue 25 Jul 2023 20:34:19 BST] /home/kay/.local/share/nvim/site/pack/packer/start/null-ls.nvim/lua/null-ls/generators.lua:21: running generators for method NULL_LS_DIAGNOSTICS
[DEBUG Tue 25 Jul 2023 20:34:19 BST] /home/kay/.local/share/nvim/site/pack/packer/start/null-ls.nvim/lua/null-ls/helpers/generator_factory.lua:321: spawning command "/home/kay//api-auth/node_modules/.bin/eslint" at /home/kay//api-auth with args { "-f", "json", "--stdin", "--stdin-filename", "/home/kay//api-auth/test.ts" }
[TRACE Tue 25 Jul 2023 20:34:20 BST] /home/kay/.local/share/nvim/site/pack/packer/start/null-ls.nvim/lua/null-ls/helpers/generator_factory.lua:205: error output: nil
[TRACE Tue 25 Jul 2023 20:34:20 BST] /home/kay/.local/share/nvim/site/pack/packer/start/null-ls.nvim/lua/null-ls/helpers/generator_factory.lua:206: output: [{"filePath":"/home/kay//api-auth/test.ts","messages":[{"ruleId":null,"fatal":true,"severity":2,"message":"Parsing error: Declaration or statement expected.","line":11,"column":7}],"suppressedMessages":[],"errorCount":1,"fatalErrorCount":1,"warningCount":0,"fixableErrorCount":0,"fixableWarningCount":0,"source":"const main = () => {\n    console.log(\"hello world\");\n};\n\nfunction someFunction(str: string, int: number) {\n    console.log(str);\n\n    return int + int;\n}\n\nmain();}\n\nmain();\n","usedDeprecatedRules":[]}]

[TRACE Tue 25 Jul 2023 20:34:20 BST] /home/kay/.local/share/nvim/site/pack/packer/start/null-ls.nvim/lua/null-ls/diagnostics.lua:181: received diagnostics from source 2
[TRACE Tue 25 Jul 2023 20:34:20 BST] /home/kay/.local/share/nvim/site/pack/packer/start/null-ls.nvim/lua/null-ls/diagnostics.lua:182: { {
    col = 6,
    end_col = 0,
    end_lnum = 11,
    lnum = 10,
    message = "Parsing error: Declaration or statement expected. eslint()",
    row = 11,
    severity = 1,
    source = "eslint",
    user_data = {
      fixable = false
    }
  } }