kui-shell/packages/builder/lib/parse-options.js

This is the monorepo for Kui, the hybrid command-line/GUI electron-based Kubernetes tool

/*
 * Copyright 2018 IBM Corporation
 *
 * 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.
 */

const debug = require('debug')('builder/parse-options')
const path = require('path')

const { moduleExists } = require('./module-exists')

/**
 * Parse options
 *
 */
module.exports = (env, overrides) =>
  new Promise(resolve => {
    debug('parsing options', env, overrides)

    // the former is for npm install mode
    // the latter is for monorepo mode
    const templateDir = moduleExists('@kui-shell/core/templates/package.json')
      ? path.dirname(require.resolve('@kui-shell/core/templates/package.json'))
      : path.join(__dirname, '../../app/templates')

    // default value assignments for options
    const defaultOptions = {
      // theme settings
      theme: {},

      // env settings, e.g. webpack versus standalone
      env: require('../examples/build-configs/default/' + env),

      // allows for arbitrary injection of configuration parameters
      config: {},

      // build settings
      build: {
        templateDir,
        buildDir: path.join(__dirname, '../../../node_modules/@kui-shell/build'), // target for index.html
        configDir: path.join(__dirname, '../../../node_modules/@kui-shell/settings') // target for config.json and package.json
      }
    }
    debug('defaultOptions', defaultOptions)

    // apply overrides to the defaults
    const options = Object.assign({}, defaultOptions)
    options.theme = Object.assign(options.theme, overrides.theme || {})
    options.env = Object.assign(options.env, overrides.env || {})
    options.config = Object.assign(options.config, overrides.config || {})
    options.build = Object.assign(options.build, overrides.build || {})

    debug('final options', options)
    resolve(options)
  })