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npm · #2122 most downloaded on npm
A native "Headers" class polyfill.
Last release 7 months ago
05 Mar 2026
Ships unpredictably
gaps range from 1 weeks to 2.0 years
Nearly every release is documented
notes for 22 of 24 stable releases
Nothing withdrawn
no release was ever pulled
5 years old
24 releases · first in 2022
One column per quarter.
support objects with null prototype as HeadersInit ( #81 ) ( c95b0bc ) @tmisirpash @kettanaito
HeadersInit (#81) (c95b0bc) @tmisirpash @kettanaitoThis version still ships CommonJS entrypoints. Make sure to use modern bundler that understands exports conditions. If it doesn't, please consider mig
This version still ships CommonJS entrypoints. Make sure to use modern bundler that understands
exportsconditions. If it doesn't, please consider migrating to modern tooling.
add [Symbol.toStringTag] to Headers ( #77 ) ( 539042b ) @jacob-ebey @kettanaito
support global "_Headers" in Undici 5.26.3 ( #73 ) ( 49a4386 ) @joshkel @kettanaito
docs: update usage of "getRawHeaders" method
#70
remove ".all()", move ".raw()" to "getRawHeaders()" ( #70 ) ( dd0b624 ) @kettanaito
validate header names and values ( #69 ) ( ad5ead7 ) @kettanaito
sort results of ".entries()", ".keys()", and ".values()" ( #68 ) ( a748755 ) @brophdawg11 @kettanaito
transpile to ES5 instead of ES2020 ( #66 ) ( 3407d3f ) @felipeplets
bundle "set- cookie-parser" to prevent module resolution issues (#65) (f176e21199f0c25421862d9c699d203c9bcb69a1) @mattcosta7
getSetCookie: parse set-cookie header
implements "getSetCookie" method on Headers
join multiple header values by comma, not semicolon
## v3.1.1 (2022-10-06) ### Bug Fixes - use mjs instead of esm folder
## v3.1.0 (2022-09-15) ### Features - support esm
use "es5" as the compile target
use symbols for normalized headers and raw header names
## 3.0.8 (2022-07-06) ### Bug Fixes * add license file
return undefined from the "delete" method
reverts the duplicate header value behavior
prevent duplicate values for different cased headers
Nothing published for this version
Nothing published for this version
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