Module @benneq/urlsearchparams

This module contains utilities for working with URLSearchParams

Example

// create the URLSearchParams parser
const parseUrlSearchParams = mapper({
  categories: pipe(
    get("category"),
  ),
  active: pipe(
    get("active"),
    map(parseBoolean),
    some(boolean => boolean),
  ),
  pagination: pipe(
    get("page"),
    map(parsePagination),
    filter(isNotUndefined),
    first(defaultPagination),
  ),
  hours: pipe(
    get("hours"),
    flatMap(split(",")),
    map(parseInteger),
    filter(isNotUndefined),
    distinct(),
    toArray(),
  ),
});

// function that trims all keys and values and transforms keys to lowercase
const normalizeUrlSearchParams = pipe(
  map(([key, value]) => [key.trim(), value.trim()]),
  map(([key, value]) => [key.toLowerCase(), value]),
);

// build a function that first normalizes and then parses URLSearchParams
const normalizeAndParse = pipe(
  normalizeUrlSearchParams,
  parseUrlSearchParams
);

// the incoming URLSearchParams to parse
const urlSearchParams = new URLSearchParams(`
  ?category=a
  &category=b
  &active=true
  &page=1,5
`);

// parse URLSearchParams
const result = normalizeAndParse(urlSearchParams);
console.log(result); // { categories:["a","b"], active:true, paignation:{page:1,size:5}, hours:[] }