jq-browse-npm-page-of-webpack-plugins-and-loaders.sh

#!/usr/bin/env bash

set -e
set -o pipefail
set -o noglob
set -u
export IFS=$'\n'

for url in $(jq -r '.dependencies as $k |.devDependencies as $d| ($k|keys) + ($d|keys) | .[] ' package.json | grep -E '(webpack-plugin|[-]loader)' | sed -E 's/^([a-z][a-z0-9-]+)$/https:\/\/www.npmjs.com\/package\/\1/g'); do
    open "${url}"
done

structured-shell-script-version.sh

#!/usr/bin/env bash

set -e
set -o pipefail
set -o noglob
set -u

if [ ! -e "package.json" ]; then
    1>&2 echo -e "package.json does not exist in $(pwd)"
    exit 1
elif [ ! -f "package.json" ]; then
    1>&2 echo -e "$(pwd)/package.json exists but is not a regular file"
    exit 1
elif [ ! -r "package.json" ]; then
    1>&2 echo -e "$(pwd)/package.json exists but is not readable"
    exit 1
elif [ ! -s "package.json" ]; then
    1>&2 echo -e "$(pwd)/package.json exists but is empty"
    exit 1
fi
export IFS=$'\n'

declare -a package_json_dependency_keys=(
    "dependencies"
    "devDependencies"
)

declare -i fchar=97 # a
declare -i index=0
declare -a jq_alias_expressions=()
declare -a jq_key_concatenation_expressions=()

for index in ${!package_json_dependency_keys[@]}; do
    declare -i current=$(( $index + 1 ))
    declare -- key=${package_json_dependency_keys[$index]}
    declare -- jq_alias_char_decimal=$(($fchar + $index))
    declare -- jq_alias_char_hex=$(printf '%x' ${jq_alias_char_decimal})
    if [ $current -lt ${#package_json_dependency_keys[@]} ]; then
        declare -- alias_suffix=" |"
        declare -- concat_suffix=" +"
    else
        declare -- alias_suffix=""
        declare -- concat_suffix=""
    fi
    declare -- key_alias="$(echo -e "\$\x${jq_alias_char_hex}")"
    jq_alias_expressions+=( ".${key} as ${key_alias}${alias_suffix}" )
    jq_key_concatenation_expressions+=( "(${key_alias}|keys)${concat_suffix}" )
done

declare -- jq_expression="${jq_alias_expressions[@]} | ${jq_key_concatenation_expressions[@]} | .[]"

declare -a all_dependency_names=$(jq -r "${jq_expression}" package.json)
declare -a all_dependency_npm_urls=$(for dep in ${all_dependency_names[@]}; do
                                         sed -E 's/^([a-z][a-z0-9-]+)$/https:\/\/www.npmjs.com\/package\/\1/g' <<< "${dep}";
                                     done)
for url in ${all_dependency_npm_urls[@]}; do
    if grep -E '(webpack-plugin|[-]loader)' <<< "${url}"; then
        echo "${url}"
    fi
done