headers-utils

Headers utility collection.

equalsHeaders

Check two Headers field name and field value equality.

import{equalsHeaders}from"https://deno.land/x/headers_utils@$VERSION/equal.ts";import{assert,assertFalse}from"https://deno.land/std/testing/asserts.ts";assert(equalsHeaders(newHeaders({a: "b"}),newHeaders({a: "b"})));assertFalse(equalsHeaders(newHeaders({a: "b"}),newHeaders({c: "d"})));

filterHeadersEntries

Returns a new Headers with all entries of the given headers except the ones that do not match the given predicate.

import{filterHeadersEntries}from"https://deno.land/x/headers_utils@$VERSION/filter_entries.ts";import{assert,assertFalse}from"https://deno.land/std/testing/asserts.ts";declareconstisIMFDate: (input: string)=>boolean;constheaders=filterHeadersEntries(newHeaders({"date": "<date>","content-type": "<content-type>",}),([key,value])=>isIMFDate(value),);assert(headers.has("date"));assert(headers.has("content-type"));

filterHeadersKeys

Returns a new Headers with all entries of the given headers except the ones that have a key(field name) that does not match the given predicate.

import{filterHeadersKeys}from"https://deno.land/x/headers_utils@$VERSION/filter_keys.ts";import{assert,assertFalse}from"https://deno.land/std/testing/asserts.ts";constheaders=filterHeadersKeys(newHeaders({"date": "<date>","content-type": "<content-type>",}),(key)=>key.startsWith("content"),);assert(headers.has("content-type"));assertFalse(headers.has("date"));

filterHeadersValues

Returns a new Headers with all entries of the given headers except the ones that have a value(field value) that does not match the given predicate.

import{filterHeadersValues}from"https://deno.land/x/headers_utils@$VERSION/filter_values.ts";import{assert,assertFalse}from"https://deno.land/std/testing/asserts.ts";declareconstisIMFDate: (input: string)=>boolean;constheaders=filterHeadersValues(newHeaders({"date": "<date>","content-type": "<content-type>",}),isIMFDate,);assert(headers.has("date"));assertFalse(headers.has("content-type"));

isHeaders

Whether the input is Headers or not.

import{isHeaders}from"https://deno.land/x/headers_utils@$VERSION/is.ts";import{assert,assertFalse}from"https://deno.land/std/testing/asserts.ts";assert(isHeaders(newHeaders()));assertFalse(isHeaders({}));

stringifyHeaders

Serialize Headers into string.

import{stringifyHeaders}from"https://deno.land/x/headers_utils@$VERSION/stringify.ts";import{assertEquals}from"https://deno.land/std/testing/asserts.ts";assertEquals(stringifyHeaders(newHeaders()),"");assertEquals(stringifyHeaders(newHeaders({"content-type": "text/plain","date": "Wed, 21 Oct 2015 07:28:00 GMT",}),),`content-type: text/plaindate: Wed, 21 Oct 2015 07:28:00 GMT`,);

API

All APIs can be found in the deno doc.

License

Copyright © 2023-present httpland.

Released under the MIT license