Header

Header names used by Drash’s own middleware, as string constants.


import { Header } from "@drashland/drash/core/http/Header.js";
 
response.headers.set(Header.ContentType, "application/json");

Values

Key	Value
`AccessControlAllowCredentials`	`Access-Control-Allow-Credentials`
`AccessControlAllowHeaders`	`Access-Control-Allow-Headers`
`AccessControlAllowMethods`	`Access-Control-Allow-Methods`
`AccessControlAllowOrigin`	`Access-Control-Allow-Origin`
`AccessControlExposeHeaders`	`Access-Control-Expose-Headers`
`AccessControlMaxAge`	`Access-Control-Max-Age`
`AccessControlRequestHeaders`	`Access-Control-Request-Headers`
`AccessControlRequestMethod`	`Access-Control-Request-Method`
`ContentLength`	`Content-Length`
`ContentType`	`Content-Type`
`Date`	`Date`
`ETag`	`ETag`
`IfMatch`	`If-Match`
`IfNoneMatch`	`If-None-Match`
`LastModified`	`Last-Modified`
`RetryAfter`	`Retry-After`
`Vary`	`Vary`

Type

Header is declared as const, so the companion type is a union of the values rather than string:


import type { Header } from "@drashland/drash/core/types/Header.js";
// "Access-Control-Allow-Credentials" | "Content-Type" | ...

The const and the type share a name and live at different paths. Import the type with import type from core/types/Header.js, and the const from core/http/Header.js.

Notes

This list is not exhaustive and is not meant to be. It covers the headers the pre-built middleware read and write — CORS, ETag, and RateLimiter. Any other header name is a plain string.