isInclusive.js•934 B
'use strict';
const isDefiningProjection = require('./isDefiningProjection');
const isPOJO = require('../isPOJO');
/*!
* ignore
*/
module.exports = function isInclusive(projection) {
if (projection == null) {
return false;
}
const props = Object.keys(projection);
const numProps = props.length;
if (numProps === 0) {
return false;
}
for (let i = 0; i < numProps; ++i) {
const prop = props[i];
// Plus paths can't define the projection (see gh-7050)
if (prop.startsWith('+')) {
continue;
}
// If field is truthy (1, true, etc.) and not an object, then this
// projection must be inclusive. If object, assume its $meta, $slice, etc.
if (isDefiningProjection(projection[prop]) && !!projection[prop]) {
if (isPOJO(projection[prop])) {
return isInclusive(projection[prop]);
} else {
return !!projection[prop];
}
}
}
return false;
};