You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
31 lines
700 B
JavaScript
31 lines
700 B
JavaScript
6 years ago
|
'use strict';
|
||
|
|
|
||
|
|
var isObject = require('is-extendable');
|
||
|
|
var union = require('arr-union');
|
||
|
|
var get = require('get-value');
|
||
|
|
var set = require('set-value');
|
||
|
|
|
||
|
|
module.exports = function unionValue(obj, prop, value) {
|
||
|
|
if (!isObject(obj)) {
|
||
|
|
throw new TypeError('union-value expects the first argument to be an object.');
|
||
|
|
}
|
||
|
|
|
||
|
|
if (typeof prop !== 'string') {
|
||
|
|
throw new TypeError('union-value expects `prop` to be a string.');
|
||
|
|
}
|
||
|
|
|
||
|
|
var arr = arrayify(get(obj, prop));
|
||
|
|
set(obj, prop, union(arr, arrayify(value)));
|
||
|
|
return obj;
|
||
|
|
};
|
||
|
|
|
||
|
|
function arrayify(val) {
|
||
|
|
if (val === null || typeof val === 'undefined') {
|
||
|
|
return [];
|
||
|
|
}
|
||
|
|
if (Array.isArray(val)) {
|
||
|
|
return val;
|
||
|
|
}
|
||
|
|
return [val];
|
||
|
|
}
|