#!/bin/sh
# script/add-dependency: add a frontend package, or move one to another
# version, with yarn add, which changes package.json and yarn.lock
# together; then install from yarn.lock with --frozen-lockfile, as
# script/bootstrap does, to show it installs as written. --dev because
# no frontend package is needed when the page runs: it ships as the
# built dist/.
set -eu

ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"

usage() {
    echo "usage: make add-dependency PACKAGE=<name>@<version>" >&2
    exit 2
}

main() {
    # Exactly one package. A value beginning with - would reach yarn as
    # an option; yarn would quietly drop all but the first of several
    # packages given in one value.
    [ "$#" -eq 1 ] || usage
    case "$1" in
    "" | -* | *[[:space:]]*) usage ;;
    esac
    cd "$ROOT"
    yarn add --dev "$1"
    yarn install --frozen-lockfile
}

main "$@"