mingo
Version:
MongoDB query language for in-memory objects
24 lines (23 loc) • 492 B
JavaScript
import {
applyUpdate,
UPDATE_OPTIONS,
walkExpression
} from "./_internal";
const $mul = (obj, expr, arrayFilters = [], options = UPDATE_OPTIONS) => {
return walkExpression(expr, arrayFilters, options, (val, node, queries) => {
return applyUpdate(
obj,
node,
queries,
(o, k) => {
const prev = o[k];
o[k] = o[k] === void 0 ? 0 : o[k] * val;
return o[k] !== prev;
},
{ buildGraph: true }
);
});
};
export {
$mul
};