Add support for .lz4 file format

Resolves: #444
sindresorhus · Dec 15, 2024 · de3bf28 · de3bf28
1 parent e99257d
commit de3bf28
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Showing 6 changed files with 15 additions and 1 deletion.
diff --git a/core.js b/core.js
@@ -966,6 +966,13 @@ export class FileTypeParser {
 			};
 		}
 
+		if (this.check([0x04, 0x22, 0x4D, 0x18])) {
+			return {
+				ext: 'lz4',
+				mime: 'application/x-lz4', // Invented by us
+			};
+		}
+
 		// -- 5-byte signatures --
 
 		if (this.check([0x4F, 0x54, 0x54, 0x4F, 0x00])) {

diff --git a/fixture/fixture.lz4 b/fixture/fixture.lz4
diff --git a/package.json b/package.json
@@ -218,7 +218,8 @@
 		"vsdx",
 		"vtt",
 		"apk",
-		"drc"
+		"drc",
+		"lz4"
 	],
 	"dependencies": {
 		"strtok3": "^10.0.0",

diff --git a/readme.md b/readme.md
@@ -479,6 +479,7 @@ abortController.abort(); // Abort file-type reading from the Blob stream.
 - [`ktx`](https://www.khronos.org/opengles/sdk/tools/KTX/file_format_spec/) - OpenGL and OpenGL ES textures
 - [`lnk`](https://en.wikipedia.org/wiki/Shortcut_%28computing%29#Microsoft_Windows) - Microsoft Windows file shortcut
 - [`lz`](https://en.wikipedia.org/wiki/Lzip) - Archive file
+- [`lz4`](https://en.wikipedia.org/wiki/LZ4_(compression_algorithm)) - Compressed archive created by one of a variety of LZ4 compression utilities
 - [`lzh`](https://en.wikipedia.org/wiki/LHA_(file_format)) - LZH archive
 - [`m4a`](https://en.wikipedia.org/wiki/M4A) - Audio-only MPEG-4 files
 - [`m4b`](https://en.wikipedia.org/wiki/M4B) - Audiobook and podcast MPEG-4 files, which also contain metadata including chapter markers, images, and hyperlinks

diff --git a/supported.js b/supported.js
@@ -155,6 +155,7 @@ export const extensions = [
 	'vtt',
 	'apk',
 	'drc',
+	'lz4',
 ];
 
 export const mimeTypes = [
@@ -309,4 +310,5 @@ export const mimeTypes = [
 	'application/vnd.visio',
 	'application/vnd.android.package-archive',
 	'application/vnd.google.draco', // Invented by us
+	'application/x-lz4', // Invented by us
 ];
diff --git a/test.js b/test.js
@@ -270,6 +270,9 @@ const names = {
 		'fixture-vtt-tab',
 		'fixture-vtt-eof',
 	],
+	lz4: [
+		'fixture',
+	],
 };
 
 // Define an entry here only if the file type has potential
-Original file line number
+Diff line change
@@ Expand Up / @@ -218,7 +218,8 @@ @@
     		"vsdx",
     		"vtt",
     		"apk",
-    		"drc"
+    		"drc",
+    		"lz4"
     	],
     	"dependencies": {
     		"strtok3": "^10.0.0",
@@ Expand Down @@