masnagam/npm-diet

#!/usr/bin/env node

// Copyright 2018 Masayuki Nagamachi <masayuki.nagamachi@gmail.com>
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

'use strict';

const program = require('commander');
const lib = require('../lib');

const HELP = `
  Arguments:

    analysis  JSON file which contains a measure analysis (optional)

  Description:

    This command loads a measure analysis JSON data from a file or STDIN, and
    shows the size of each package in a table format.
`;

program
  .description(
    'Show details of a measure analysis')
  .option(
    '-t, --top <num>',
    'show only the top `num` packages',
    parseInt)
  .option(
    '--package-path',
    'Show the path of each package')
  .arguments(
    '[analysis]')
  .on('--help', () => console.log(HELP))
  .action(async (filepath, options) => {
    const json = await lib.cli.utils.readStringFromFileOrStdin(filepath);
    const analysis = JSON.parse(json);
    if (analysis.type !== 'measure') {
      throw new Error('invalid analysis type');
    }
    lib.show.measure.details(analysis, options);
  })
  .parse(process.argv);