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.
66 lines
1.2 KiB
JavaScript
66 lines
1.2 KiB
JavaScript
9 months ago
|
'use strict';
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Simplified lodash.get to work around the annoying null quirk. See:
|
||
|
|
* https://github.com/lodash/lodash/issues/3659
|
||
|
|
* @api private
|
||
|
|
*/
|
||
|
|
|
||
|
|
module.exports = function get(obj, path, def) {
|
||
|
|
let parts;
|
||
|
|
let isPathArray = false;
|
||
|
|
if (typeof path === 'string') {
|
||
|
|
if (path.indexOf('.') === -1) {
|
||
|
|
const _v = getProperty(obj, path);
|
||
|
|
if (_v == null) {
|
||
|
|
return def;
|
||
|
|
}
|
||
|
|
return _v;
|
||
|
|
}
|
||
|
|
|
||
|
|
parts = path.split('.');
|
||
|
|
} else {
|
||
|
|
isPathArray = true;
|
||
|
|
parts = path;
|
||
|
|
|
||
|
|
if (parts.length === 1) {
|
||
|
|
const _v = getProperty(obj, parts[0]);
|
||
|
|
if (_v == null) {
|
||
|
|
return def;
|
||
|
|
}
|
||
|
|
return _v;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
let rest = path;
|
||
|
|
let cur = obj;
|
||
|
|
for (const part of parts) {
|
||
|
|
if (cur == null) {
|
||
|
|
return def;
|
||
|
|
}
|
||
|
|
|
||
|
|
// `lib/cast.js` depends on being able to get dotted paths in updates,
|
||
|
|
// like `{ $set: { 'a.b': 42 } }`
|
||
|
|
if (!isPathArray && cur[rest] != null) {
|
||
|
|
return cur[rest];
|
||
|
|
}
|
||
|
|
|
||
|
|
cur = getProperty(cur, part);
|
||
|
|
|
||
|
|
if (!isPathArray) {
|
||
|
|
rest = rest.substr(part.length + 1);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return cur == null ? def : cur;
|
||
|
|
};
|
||
|
|
|
||
|
|
function getProperty(obj, prop) {
|
||
|
|
if (obj == null) {
|
||
|
|
return obj;
|
||
|
|
}
|
||
|
|
if (obj instanceof Map) {
|
||
|
|
return obj.get(prop);
|
||
|
|
}
|
||
|
|
return obj[prop];
|
||
|
|
}
|