client/package.json has had a format:check script, but no workflow runs
it, and 2144 of the 2171 .ts, .tsx and .css files under src/ and tests/
differ from what .prettierrc asks for. Without a formatter gate the line
count in lint:size could also be gamed, and every new file picked its
own layout.
Formatting everything in one commit would bury the history, so lint:format
lists today's unformatted files in scripts/format-baseline.json and only
lets the list shrink: a file outside it, any new file in particular, must
be formatted, and a listed file that has been formatted must leave the
list (--update takes it off and never adds one). A stale entry fails the
check, since it would let the next file at that path in unformatted.
The check runs Prettier through its API with the config that applies to
each file and reads the text with LF line ends, so a Windows checkout
agrees with CI about endOfLine. A file Prettier cannot parse counts as
unformatted, and a missing config stops the run.
Maurice