@luolapeikko/odata-query-filter

Builds a data filter based on $filter query values.

Handles most OData query comparison operators (eq | ne | gt | ge | lt | le), logical operators (and | or | not), array lambda operators (any | all), and functions (contains | startswith | endswith | tolower | toupper | trim | length | concat | indexof | substring). Automatic ISO DateTime string / Date handling, and uses toString() for custom objects in comparisons.

Usage examples

interface Person {
  name: string;
}
const personList = [{ name: "John" }, { name: "Mary" }];
const personFilter = createODataFilter<Person>("name eq 'John'");
console.log(personList.filter(personFilter)); // [{name: 'John'}]

import { createODataFilter } from "@luolapeikko/odata-query-filter";

const handleRequest = (req, res, next) => {
  const dataArray: DataType[] = await getSomeData();
  const queryFilter = req.query.$filter;
  if (typeof queryFilter === "string") {
    const filterCallback = createODataFilter<DataType>(queryFilter);
    res.json(dataArray.filter(filterCallback));
  }
};