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mfer/script/prettier
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Configure prettier and make fmt-check cover markdown (closes #69)
Adds .prettierrc and .prettierignore, a single script/prettier entrypoint shared by fmt and fmt-check so the two cannot drift, and prettier 3.9.6 pinned by yarn.lock integrity hash.

Markdown formatting is now gated in the authoritative Docker build via a new mdfmt stage, since the golangci-lint image has no node. REPO_POLICIES.md is ignored so local tooling cannot drift it from upstream.

Removes the || true that made the previous prettier invocation unable to fail.
2026-08-10 16:16:42 +02:00

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#!/bin/sh
# script/prettier: run prettier over this repo's canonical file set.
#
# Takes exactly one mode argument, --write or --check, and applies the
# same patterns in both modes. script/fmt and script/fmt-check both go
# through here, so the set of files that get formatted and the set that
# get verified cannot drift apart.
#
# Failures are never swallowed: a missing prettier is an error, not a
# silent skip. A formatter that quietly does nothing is worse than one
# that fails loudly.
set -eu
ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
usage() {
echo "usage: script/prettier --write|--check" >&2
exit 2
}
# Prefer the version pinned by package.json/yarn.lock so that CI and
# developer machines format identically. Fall back to a prettier on PATH,
# but say so, because a different version formats differently.
find_prettier() {
if [ -x "$ROOT/node_modules/.bin/prettier" ]; then
printf '%s\n' "$ROOT/node_modules/.bin/prettier"
return 0
fi
if command -v prettier >/dev/null 2>&1; then
echo "prettier: node_modules/.bin/prettier is absent; using the" \
"prettier on PATH, which may be a different version than the" \
"one pinned in package.json. Run script/bootstrap to install" \
"the pinned version." >&2
command -v prettier
return 0
fi
return 1
}
main() {
[ "$#" -eq 1 ] || usage
case "$1" in
--write | --check) mode="$1" ;;
*) usage ;;
esac
cd "$ROOT"
if ! prettier_bin="$(find_prettier)"; then
echo "prettier: not found." >&2
echo " Install it with: script/bootstrap" >&2
echo " (installs the version pinned in package.json/yarn.lock)" >&2
exit 1
fi
# Markdown and JSON, repo-wide rather than root-only, so files in
# subdirectories (docs/, once it exists) are covered too. Exclusions
# live in .prettierignore; REPO_POLICIES.md is excluded there because
# it is a verbatim copy of an upstream document.
#
# --no-error-on-unmatched-pattern is deliberately NOT used: both
# patterns always match at least one tracked file (README.md,
# package.json), so an empty match means the glob broke, and prettier
# erroring out is exactly what we want rather than a vacuous pass.
"$prettier_bin" "$mode" "**/*.md"
"$prettier_bin" "$mode" "**/*.json"
}
main "$@"