mirror of
https://github.com/denoland/deno.git
synced 2024-12-26 17:19:06 -05:00
90 lines
2.4 KiB
Markdown
90 lines
2.4 KiB
Markdown
|
# media_types
|
||
|
|
|
||
|
|
A module that assists in resolving media types and extensions. It consumes the
|
||
|
|
[mime-db](https://github.com/jshttp/mime-db) and provides API access to the
|
||
|
|
information.
|
||
|
|
|
||
|
|
## Usage
|
||
|
|
|
||
|
|
### `lookup(path)`
|
||
|
|
|
||
|
|
Lookup the content type associated with a file. The path can be just the
|
||
|
|
extension or the full path name. If the content type cannot be determined the
|
||
|
|
function returns `undefined`:
|
||
|
|
|
||
|
|
```ts
|
||
|
|
import { lookup } from "https://deno.land/x/std/media_types/mod.ts";
|
||
|
|
|
||
|
|
lookup("json"); // "application/json"
|
||
|
|
lookup(".md"); // "text/markdown"
|
||
|
|
lookup("folder/file.js"); // "application/javascript"
|
||
|
|
lookup("folder/.htaccess"); // undefined
|
||
|
|
```
|
||
|
|
|
||
|
|
### `contentType(type)`
|
||
|
|
|
||
|
|
Return a full `Content-Type` header value for a given content type or
|
||
|
|
extension. When an extension is used, `lookup()` is used to resolve the
|
||
|
|
content type first. A default charset is added if not present. The
|
||
|
|
function will return `undefined` if the content type cannot be resolved:
|
||
|
|
|
||
|
|
```ts
|
||
|
|
import { contentType } from "https://deno.land/x/std/media_types/mod.ts";
|
||
|
|
import * as path from "https://deno.land/x/std/path/mod.ts";
|
||
|
|
|
||
|
|
contentType("markdown"); // "text/markdown; charset=utf-8"
|
||
|
|
contentType("file.json"); // "application/json; charset=utf-8"
|
||
|
|
contentType("text/html"); // "text/html; charset=utf-8"
|
||
|
|
contentType("text/html; charset=iso-8859-1"); // "text/html; charset=iso-8859-1"
|
||
|
|
|
||
|
|
contentType(path.extname("/path/to/file.json")); // "application/json; charset=utf-8"
|
||
|
|
```
|
||
|
|
|
||
|
|
### `extension(type)`
|
||
|
|
|
||
|
|
Return a default extension for a given content type. If there is not an
|
||
|
|
appropriate extension, `undefined` is returned:
|
||
|
|
|
||
|
|
```ts
|
||
|
|
import { extension } from "https://deno.land/x/std/media_types/mod.ts";
|
||
|
|
|
||
|
|
extension("application/octet-stream"); // "bin"
|
||
|
|
```
|
||
|
|
|
||
|
|
### `charset(type)`
|
||
|
|
|
||
|
|
Lookup the implied default charset for a given content type. If the content
|
||
|
|
type cannot be resolved, `undefined` is returned:
|
||
|
|
|
||
|
|
```ts
|
||
|
|
import { charset } from "https://deno.land/x/std/media_types/mod.ts";
|
||
|
|
|
||
|
|
charset("text/markdown"); // "UTF-8"
|
||
|
|
```
|
||
|
|
|
||
|
|
### `extensions`
|
||
|
|
|
||
|
|
A `Map` of extensions by content type, in priority order:
|
||
|
|
|
||
|
|
```ts
|
||
|
|
import { extensions } from "https://deno.land/x/std/media_types/mod.ts";
|
||
|
|
|
||
|
|
extensions.get("application/javascript"); // [ "js", "mjs" ]
|
||
|
|
```
|
||
|
|
|
||
|
|
### `types`
|
||
|
|
|
||
|
|
A `Map` of content types by extension:
|
||
|
|
|
||
|
|
```ts
|
||
|
|
import { types } from "https://deno.land/x/std/media_types/mod.ts";
|
||
|
|
|
||
|
|
types.get("ts"); // "application/javascript"
|
||
|
|
```
|
||
|
|
|
||
|
|
---
|
||
|
|
|
||
|
|
Adapted from [mime-type](https://github.com/jshttp/mime-types).
|
||
|
|
|
||
|
|
MIT License.
|