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'use strict';
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const isPlainObject = require('is-plain-obj');
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const arrify = require('arrify');
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const push = (obj, prop, value) => {
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if (!obj[prop]) {
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obj[prop] = [];
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}
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obj[prop].push(value);
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};
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const insert = (obj, prop, key, value) => {
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if (!obj[prop]) {
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obj[prop] = {};
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}
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obj[prop][key] = value;
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};
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const passthroughOptions = ['stopEarly', 'unknown', '--'];
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module.exports = options => {
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options = options || {};
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const result = {};
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passthroughOptions.forEach(key => {
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if (options[key]) {
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result[key] = options[key];
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}
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});
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Object.keys(options).forEach(key => {
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let value = options[key];
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if (key === 'arguments') {
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key = '_';
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}
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// If short form is used
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// convert it to long form
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// e.g. { 'name': 'string' }
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if (typeof value === 'string') {
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value = {type: value};
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}
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if (isPlainObject(value)) {
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const props = value;
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if (props.type) {
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const type = props.type;
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if (type === 'string') {
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push(result, 'string', key);
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}
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if (type === 'boolean') {
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push(result, 'boolean', key);
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}
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}
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const aliases = arrify(props.alias);
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aliases.forEach(alias => {
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insert(result, 'alias', alias, key);
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});
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if ({}.hasOwnProperty.call(props, 'default')) {
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insert(result, 'default', key, props.default);
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}
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}
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});
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return result;
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};
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