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Module

x/oak/deps.ts>contentType

A middleware framework for handling HTTP with Deno 🐿️ 🦕
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function contentType
import { contentType } from "https://deno.land/x/oak@v12.1.0/deps.ts";

Given an extension or media type, return a full Content-Type or Content-Disposition header value.

The function will treat the extensionOrType as a media type when it contains a /, otherwise it will process it as an extension, with or without the leading ..

Returns undefined if unable to resolve the media type.

Note: a side effect of deno/x/media_types was that you could pass a file name (e.g. file.json) and it would return the content type. This behavior is intentionally not supported here. If you want to get an extension for a file name, use extname() from std/path/mod.ts to determine the extension and pass it here.

Examples

Example 1

import { contentType } from "https://deno.land/std@0.224.0/media_types/content_type.ts";

contentType(".json"); // `application/json; charset=UTF-8`
contentType("text/html"); // `text/html; charset=UTF-8`
contentType("text/html; charset=UTF-8"); // `text/html; charset=UTF-8`
contentType("txt"); // `text/plain; charset=UTF-8`
contentType("foo"); // undefined
contentType("file.json"); // undefined

Type Parameters

T extends (string & { }) | KnownExtensionOrType

Parameters

extensionOrType: T

Returns

Lowercase<T> extends KnownExtensionOrType ? string : string | undefined