How do i get the end of line errors like in error lens in vscode

[Rain-Gayming]

I saw this in the readme, it looks like the error lens plugin from VSCode, how do i enable this in trouble?

[paul-hansen]

This is built into neovim now!
Just add this to your config

vim.diagnostic.config({
    virtual_text = {
        -- source = "always",  -- Or "if_many"
        prefix = '●', -- Could be '■', '▎', 'x'
    },
    severity_sort = true,
    float = {
        source = true
    },
})

Or personally I like to show them as virtual lines below the line so you can see more of the error (some people don't like that it moves things around though)

vim.diagnostic.config({
    virtual_line = { -- this part is different!
        -- source = "always",  -- Or "if_many"
        prefix = '●', -- Could be '■', '▎', 'x'
    },
    severity_sort = true,
    float = {
        source = true
    },
})