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dotfiles/dot_config/fish/functions/pj.fish
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function pj --description "fzf package.json script runner with auto-detected package manager"
# ── Locate nearest package.json (walk up) ──────────────────────────
set -l dir (pwd)
set -l pkg ""
while true
if test -f "$dir/package.json"
set pkg "$dir/package.json"
break
end
test "$dir" = / && break
set dir (path dirname $dir)
end
if test -z "$pkg"
echo "pj: no package.json found in this tree" >&2
return 1
end
set -l root (path dirname $pkg)
# ── Detect package manager ─────────────────────────────────────────
# Priority: packageManager field (corepack) → lockfiles (walking up
# past $root to catch monorepo-root locks) → npm fallback
set -l pm (jq -r '.packageManager // empty' $pkg | string split '@')[1]
if test -z "$pm"
set -l d $root
while test -z "$pm"
if test -f "$d/bun.lockb" -o -f "$d/bun.lock"
set pm bun
else if test -f "$d/pnpm-lock.yaml"
set pm pnpm
else if test -f "$d/yarn.lock"
set pm yarn
else if test -f "$d/package-lock.json"
set pm npm
end
test "$d" = / && break
set d (path dirname $d)
end
test -z "$pm" && set pm npm
end
# ── Pick a script ──────────────────────────────────────────────────
set -l script (jq -r '.scripts // {} | keys[]' $pkg | fzf \
--prompt="$pm run ❯ " \
--header="$root" \
--height=40% --layout=reverse --border \
--preview="jq -r --arg s {} '.scripts[\$s]' $pkg" \
--preview-window=up:2:wrap)
test -z "$script" && return 0
# ── Run (npm needs `--` to forward extra args) ────────────────────
set -l extra $argv
if test "$pm" = npm -a (count $extra) -gt 0
set extra -- $extra
end
# Wrap long-running server scripts in openlogs (live log tail for agents).
# Matches dev/start/serve and namespaced variants like dev:web, start:api.
set -l wrapper
if string match -qr '^(dev|start|serve|watch)(:.*)?$' -- $script
# Resolve the binary: PATH → mise resolution → mise installs glob
set -l ol (command -s openlogs)
if test -z "$ol"; and command -sq mise
set ol (mise which openlogs 2>/dev/null)
end
if test -z "$ol"
set ol ~/.local/share/mise/installs/node/*/bin/openlogs
set ol $ol[1]
end
if test -n "$ol" -a -x "$ol"
set wrapper $ol
else
echo "pj: openlogs not found, running unwrapped" >&2
end
end
if test -n "$wrapper"
echo "→ $wrapper $pm run $script $argv" >&2
$wrapper $pm run $script $extra
else
echo "→ $pm run $script $argv" >&2
$pm run $script $extra
end
end