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