Nightly release tsserver omnifunc doesn't complete partial identifier

[paskozdilar]

Problem

Nightly release of Neovim has issues with tsserver omnifunc.

Example files:

// mymodule.ts
export function foo() {}
export function bar() {}

// index.ts
import { } from './mymodule';

Opening index.ts, typing f between the brackets, then pressing <C-x><C-o> autocompletes to bar - lexicographically first identifier, instead of foo, which would complete the f input.

---

I've written a Dockerfile that reproduces this issue with minimum configuration:

FROM node:18

WORKDIR /root/app

# install nightly nvim
RUN wget https://github.com/neovim/neovim/releases/download/nightly/nvim-linux64.tar.gz
RUN tar -xzvf nvim-linux64.tar.gz

# install lspconfig
RUN git clone -b v0.1.8 https://github.com/neovim/nvim-lspconfig ~/.config/nvim/pack/nvim/start/nvim-lspconfig

# install typescript and tsserver
RUN npm install -g typescript typescript-language-server

# create tsserver configuration
RUN mkdir -p ~/.config/nvim/
RUN echo "luafile $HOME/.config/nvim/lspconfig.lua" >> ~/.config/nvim/init.vim
RUN echo "local lspconfig = require('lspconfig')" >> ~/.config/nvim/lspconfig.lua
RUN echo "lspconfig.tsserver.setup{}" >> ~/.config/nvim/lspconfig.lua
RUN echo "vim.api.nvim_create_autocmd('LspAttach', {" >> ~/.config/nvim/lspconfig.lua
RUN echo "    group = vim.api.nvim_create_augroup('UserLspConfig', {})," >> ~/.config/nvim/lspconfig.lua
RUN echo "    callback = function(ev)" >> ~/.config/nvim/lspconfig.lua
RUN echo "        -- Enable completion triggered by <c-x><c-o>" >> ~/.config/nvim/lspconfig.lua
RUN echo "        vim.bo[ev.buf].omnifunc = 'v:lua.vim.lsp.omnifunc'" >> ~/.config/nvim/lspconfig.lua
RUN echo "    end," >> ~/.config/nvim/lspconfig.lua
RUN echo "})" >> ~/.config/nvim/lspconfig.lua

# create example project
RUN npm init --force
RUN tsc --init
RUN echo "export function foo() {}" >> mymodule.ts
RUN echo "export function bar() {}" >> mymodule.ts
RUN echo "import { } from './mymodule';" >> index.ts

ENTRYPOINT "/root/app/nvim-linux64/bin/nvim"

Build the image, run it, and type :e index.ts<Return>wwif<C-x><C-o> - omnifunc will complete bar instead of foo.

---

By contrast, here is a Dockerfile in which the omnifunc correctly completes foo:

FROM node:18

WORKDIR /root/app

# install release nvim
RUN wget https://github.com/neovim/neovim/releases/download/v0.10.0/nvim-linux64.tar.gz
RUN tar -xzvf nvim-linux64.tar.gz

# install lspconfig
RUN git clone -b v0.1.8 https://github.com/neovim/nvim-lspconfig ~/.config/nvim/pack/nvim/start/nvim-lspconfig

# install typescript and tsserver
RUN npm install -g typescript typescript-language-server

# create tsserver configuration
RUN mkdir -p ~/.config/nvim/
RUN echo "luafile $HOME/.config/nvim/lspconfig.lua" >> ~/.config/nvim/init.vim
RUN echo "local lspconfig = require('lspconfig')" >> ~/.config/nvim/lspconfig.lua
RUN echo "lspconfig.tsserver.setup{}" >> ~/.config/nvim/lspconfig.lua
RUN echo "vim.api.nvim_create_autocmd('LspAttach', {" >> ~/.config/nvim/lspconfig.lua
RUN echo "    group = vim.api.nvim_create_augroup('UserLspConfig', {})," >> ~/.config/nvim/lspconfig.lua
RUN echo "    callback = function(ev)" >> ~/.config/nvim/lspconfig.lua
RUN echo "        -- Enable completion triggered by <c-x><c-o>" >> ~/.config/nvim/lspconfig.lua
RUN echo "        vim.bo[ev.buf].omnifunc = 'v:lua.vim.lsp.omnifunc'" >> ~/.config/nvim/lspconfig.lua
RUN echo "    end," >> ~/.config/nvim/lspconfig.lua
RUN echo "})" >> ~/.config/nvim/lspconfig.lua

# create example project
RUN npm init --force
RUN tsc --init
RUN echo "export function foo() {}" >> mymodule.ts
RUN echo "export function bar() {}" >> mymodule.ts
RUN echo "import { } from './mymodule';" >> index.ts

ENTRYPOINT "/root/app/nvim-linux64/bin/nvim"

Steps to reproduce using "nvim -u minimal_init.lua"

local lspconfig = require('lspconfig')
lspconfig.tsserver.setup{}
vim.api.nvim_create_autocmd('LspAttach', {
    group = vim.api.nvim_create_augroup('UserLspConfig', {}),
    callback = function(ev)
        -- Enable completion triggered by <c-x><c-o>
        vim.bo[ev.buf].omnifunc = 'v:lua.vim.lsp.omnifunc'
    end,
})

Expected behavior

Expected behavior:

2024-06-11_14-09-36.mp4

---

Actual behavior:

2024-06-11_14-12-12.mp4

Neovim version (nvim -v)

NVIM v0.11.0-dev-211+g37bf4c572

Language server name/version

[email protected]

Operating system/version

Ubuntu 22.04

Log file

https://gist.github.com/paskozdilar/a3c8391ff427e432449ef6e8dd70cd52