vscode formatOnType doesnt work

[achidipothu]

Describe the bug vscode has a handy feature which formats the code as we type, it doesnt seem to work with Lua.

To Reproduce Steps to reproduce the behavior:

1. Write any unformatted code in a line

i=0

2. press "return" key
3. Code is still unformatted.

i=0

Expected behavior Code should be formatted on a "return" key like below, just as it formats with the format(I mean format code manully by selecting it editor.action.formatSelection) option.

i = 0

Environment (please complete the following information):

• OS: Fedora 35
• Client: VSCode
• VSCode Settings:

    "editor.formatOnType": true,
    "[lua]": {
        "editor.defaultFormatter": "sumneko.lua"
    },

Additional context

• the same option works with C/C++ code.
• can this be enabled with any other setting? I didnt find any.
• Also None of the Lua formatters out there seem to support this, is there any inherent problem with lua in supporting this?

[CppCXY]

in sumneko_lua, type-on-format uses sumneko's own function. but the formatter of sumneko lua used, supports type format

[sumneko]

Should be supported.