Language server errors whilst writing COPY --from line #3349
Description
This means VS Code alerts me with a popup in the bottom right, saying:
A request has failed. See the output for more information.
Viewing the output for "Dockerfile Language Server", I see multiple repetitions of the following:
[Error - 13:44:19] Request textDocument/completion failed.
Message: Request textDocument/completion failed with message: Cannot read property 'getRange' of undefined
Code: -32603
To reproduce, in a Dockerfile, start writing COPY --from=something: the line will be highlighted red and the tooltip info will say "COPY requires at least two arguments - dockerfile-utils(7)" – this is helpful =) Then start typing a space to start writing your two arguments, and the error above occurs immediately after typing the space. If you continue to write out the two arguments, no further error occurs; but if you go back to the --from argument and retype the space, then the error occurs every time you do that.
- No error except tooltip highlight:
COPY --from=something - Error occurs:
COPY --from=something(I typed a non-breaking space here because the highlight wasn't showing the extra space: don't copy this) - No error except tooltip highlight:
COPY --from=something /path/to/something - All good:
COPY --from=something /path/to/something ./something