/http/etag.ts | std@0.220.0

Module

std/http/etag.ts

Deno standard library

denoland/deno_std

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mod.ts (default module)

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server_sent_event_stream.ts

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unstable_signed_cookie.ts

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The Standard Library has been moved to JSR. See the blog post for details.

import * as mod from "https://deno.land/std@0.220.0/http/etag.ts";

Provides functions for dealing with and matching ETags, including calculate to calculate an etag for a given entity, ifMatch for validating if an ETag matches against a If-Match header and ifNoneMatch for validating an Etag against an If-None-Match header.

See further information on the ETag header on MDN.

Functions

f calculate	Calculate an ETag for an entity. When the entity is a specific set of data it will be fingerprinted as a "strong" tag, otherwise if it is just file information, it will be calculated as a weak tag.
f ifMatch	A helper function that takes the value from the `If-Match` header and a calculated etag for the target. By using strong comparison, return `true` if the values match, otherwise `false`.
f ifNoneMatch	A helper function that takes the value from the `If-None-Match` header and a calculated etag for the target entity and returns `false` if the etag for the entity matches the supplied value, otherwise `true`.

Interfaces

I ETagOptions	Options for `calculate`.
I FileInfo	Just the part of `Deno.FileInfo` that is required to calculate an `ETag`, so partial or user generated file information can be passed.

Type Aliases

Entity

Represents an entity that can be used for generating an ETag.