schnee effeckt und fehler Korektur

node_modules/is-gif/index.js

@@ -1,10 +1,12 @@
 'use strict';
-module.exports = function (buf) {
-	if (!buf || buf.length < 3) {
+const fileType = require('file-type');
+
+module.exports = input => {
+	const match = fileType(input);
+
+	if (!match) {
 		return false;
 	}
 
-	return buf[0] === 71 &&
-		buf[1] === 73 &&
-		buf[2] === 70;
+	return match.ext === 'gif';
 };

node_modules/is-gif/license

@@ -0,0 +1,9 @@
+MIT License
+
+Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

node_modules/is-gif/node_modules/file-type/index.d.ts

@@ -0,0 +1,191 @@
+/// <reference types="node"/>
+import {Readable as ReadableStream} from 'stream';
+
+declare namespace fileType {
+	type FileType =
+		| 'jpg'
+		| 'png'
+		| 'gif'
+		| 'webp'
+		| 'flif'
+		| 'cr2'
+		| 'tif'
+		| 'bmp'
+		| 'jxr'
+		| 'psd'
+		| 'zip'
+		| 'tar'
+		| 'rar'
+		| 'gz'
+		| 'bz2'
+		| '7z'
+		| 'dmg'
+		| 'mp4'
+		| 'm4v'
+		| 'mid'
+		| 'mkv'
+		| 'webm'
+		| 'mov'
+		| 'avi'
+		| 'wmv'
+		| 'mpg'
+		| 'mp2'
+		| 'mp3'
+		| 'm4a'
+		| 'ogg'
+		| 'opus'
+		| 'flac'
+		| 'wav'
+		| 'qcp'
+		| 'amr'
+		| 'pdf'
+		| 'epub'
+		| 'mobi'
+		| 'exe'
+		| 'swf'
+		| 'rtf'
+		| 'woff'
+		| 'woff2'
+		| 'eot'
+		| 'ttf'
+		| 'otf'
+		| 'ico'
+		| 'flv'
+		| 'ps'
+		| 'xz'
+		| 'sqlite'
+		| 'nes'
+		| 'crx'
+		| 'xpi'
+		| 'cab'
+		| 'deb'
+		| 'ar'
+		| 'rpm'
+		| 'Z'
+		| 'lz'
+		| 'msi'
+		| 'mxf'
+		| 'mts'
+		| 'wasm'
+		| 'blend'
+		| 'bpg'
+		| 'docx'
+		| 'pptx'
+		| 'xlsx'
+		| '3gp'
+		| 'jp2'
+		| 'jpm'
+		| 'jpx'
+		| 'mj2'
+		| 'aif'
+		| 'odt'
+		| 'ods'
+		| 'odp'
+		| 'xml'
+		| 'heic'
+		| 'cur'
+		| 'ktx'
+		| 'ape'
+		| 'wv'
+		| 'asf'
+		| 'wma'
+		| 'wmv'
+		| 'dcm'
+		| 'mpc'
+		| 'ics'
+		| 'glb'
+		| 'pcap';
+
+	interface FileTypeResult {
+		/**
+		One of the supported [file types](https://github.com/sindresorhus/file-type#supported-file-types).
+		*/
+		ext: FileType;
+
+		/**
+		The detected [MIME type](https://en.wikipedia.org/wiki/Internet_media_type).
+		*/
+		mime: string;
+	}
+
+	type ReadableStreamWithFileType = ReadableStream & {
+		readonly fileType: FileTypeResult | null;
+	};
+}
+
+declare const fileType: {
+	/**
+	Detect the file type of a `Buffer`/`Uint8Array`/`ArrayBuffer`. The file type is detected by checking the [magic number](https://en.wikipedia.org/wiki/Magic_number_(programming)#Magic_numbers_in_files) of the buffer.
+
+	@param buffer - It only needs the first `.minimumBytes` bytes. The exception is detection of `docx`, `pptx`, and `xlsx` which potentially requires reading the whole file.
+	@returns An object with the detected file type and MIME type or `null` when there was no match.
+
+	@example
+	```
+	import readChunk = require('read-chunk');
+	import fileType = require('file-type');
+
+	const buffer = readChunk.sync('unicorn.png', 0, fileType.minimumBytes);
+
+	fileType(buffer);
+	//=> {ext: 'png', mime: 'image/png'}
+
+
+	// Or from a remote location:
+
+	import * as http from 'http';
+
+	const url = 'https://assets-cdn.github.com/images/spinners/octocat-spinner-32.gif';
+
+	http.get(url, response => {
+		response.on('readable', () => {
+			const chunk = response.read(fileType.minimumBytes);
+			response.destroy();
+			console.log(fileType(chunk));
+			//=> {ext: 'gif', mime: 'image/gif'}
+		});
+	});
+	```
+	*/
+	(buffer: Buffer | Uint8Array | ArrayBuffer): fileType.FileTypeResult | null;
+
+	/**
+	The minimum amount of bytes needed to detect a file type. Currently, it's 4100 bytes, but it can change, so don't hard-code it.
+	*/
+	readonly minimumBytes: number;
+
+	/**
+	Detect the file type of a readable stream.
+
+	@param readableStream - A readable stream containing a file to examine, see: [`stream.Readable`](https://nodejs.org/api/stream.html#stream_class_stream_readable).
+	@returns A `Promise` which resolves to the original readable stream argument, but with an added `fileType` property, which is an object like the one returned from `fileType()`.
+
+	@example
+	```
+	import * as fs from 'fs';
+	import * as crypto from 'crypto';
+	import fileType = require('file-type');
+
+	(async () => {
+		const read = fs.createReadStream('encrypted.enc');
+		const decipher = crypto.createDecipheriv(alg, key, iv);
+
+		const stream = await fileType.stream(read.pipe(decipher));
+
+		console.log(stream.fileType);
+		//=> {ext: 'mov', mime: 'video/quicktime'}
+
+		const write = fs.createWriteStream(`decrypted.${stream.fileType.ext}`);
+		stream.pipe(write);
+	})();
+	```
+	*/
+	readonly stream: (
+		readableStream: ReadableStream
+	) => Promise<fileType.ReadableStreamWithFileType>;
+
+	// TODO: Remove this for the next major release
+	readonly default: typeof fileType;
+};
+
+export = fileType;

node_modules/is-gif/node_modules/file-type/index.js

@@ -0,0 +1,953 @@
+'use strict';
+const toBytes = s => [...s].map(c => c.charCodeAt(0));
+const xpiZipFilename = toBytes('META-INF/mozilla.rsa');
+const oxmlContentTypes = toBytes('[Content_Types].xml');
+const oxmlRels = toBytes('_rels/.rels');
+
+function readUInt64LE(buf, offset = 0) {
+	let n = buf[offset];
+	let mul = 1;
+	let i = 0;
+	while (++i < 8) {
+		mul *= 0x100;
+		n += buf[offset + i] * mul;
+	}
+
+	return n;
+}
+
+const fileType = input => {
+	if (!(input instanceof Uint8Array || input instanceof ArrayBuffer || Buffer.isBuffer(input))) {
+		throw new TypeError(`Expected the \`input\` argument to be of type \`Uint8Array\` or \`Buffer\` or \`ArrayBuffer\`, got \`${typeof input}\``);
+	}
+
+	const buf = input instanceof Uint8Array ? input : new Uint8Array(input);
+
+	if (!(buf && buf.length > 1)) {
+		return null;
+	}
+
+	const check = (header, options) => {
+		options = Object.assign({
+			offset: 0
+		}, options);
+
+		for (let i = 0; i < header.length; i++) {
+			// If a bitmask is set
+			if (options.mask) {
+				// If header doesn't equal `buf` with bits masked off
+				if (header[i] !== (options.mask[i] & buf[i + options.offset])) {
+					return false;
+				}
+			} else if (header[i] !== buf[i + options.offset]) {
+				return false;
+			}
+		}
+
+		return true;
+	};
+
+	const checkString = (header, options) => check(toBytes(header), options);
+
+	if (check([0xFF, 0xD8, 0xFF])) {
+		return {
+			ext: 'jpg',
+			mime: 'image/jpeg'
+		};
+	}
+
+	if (check([0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A])) {
+		return {
+			ext: 'png',
+			mime: 'image/png'
+		};
+	}
+
+	if (check([0x47, 0x49, 0x46])) {
+		return {
+			ext: 'gif',
+			mime: 'image/gif'
+		};
+	}
+
+	if (check([0x57, 0x45, 0x42, 0x50], {offset: 8})) {
+		return {
+			ext: 'webp',
+			mime: 'image/webp'
+		};
+	}
+
+	if (check([0x46, 0x4C, 0x49, 0x46])) {
+		return {
+			ext: 'flif',
+			mime: 'image/flif'
+		};
+	}
+
+	// Needs to be before `tif` check
+	if (
+		(check([0x49, 0x49, 0x2A, 0x0]) || check([0x4D, 0x4D, 0x0, 0x2A])) &&
+		check([0x43, 0x52], {offset: 8})
+	) {
+		return {
+			ext: 'cr2',
+			mime: 'image/x-canon-cr2'
+		};
+	}
+
+	if (
+		check([0x49, 0x49, 0x2A, 0x0]) ||
+		check([0x4D, 0x4D, 0x0, 0x2A])
+	) {
+		return {
+			ext: 'tif',
+			mime: 'image/tiff'
+		};
+	}
+
+	if (check([0x42, 0x4D])) {
+		return {
+			ext: 'bmp',
+			mime: 'image/bmp'
+		};
+	}
+
+	if (check([0x49, 0x49, 0xBC])) {
+		return {
+			ext: 'jxr',
+			mime: 'image/vnd.ms-photo'
+		};
+	}
+
+	if (check([0x38, 0x42, 0x50, 0x53])) {
+		return {
+			ext: 'psd',
+			mime: 'image/vnd.adobe.photoshop'
+		};
+	}
+
+	// Zip-based file formats
+	// Need to be before the `zip` check
+	if (check([0x50, 0x4B, 0x3, 0x4])) {
+		if (
+			check([0x6D, 0x69, 0x6D, 0x65, 0x74, 0x79, 0x70, 0x65, 0x61, 0x70, 0x70, 0x6C, 0x69, 0x63, 0x61, 0x74, 0x69, 0x6F, 0x6E, 0x2F, 0x65, 0x70, 0x75, 0x62, 0x2B, 0x7A, 0x69, 0x70], {offset: 30})
+		) {
+			return {
+				ext: 'epub',
+				mime: 'application/epub+zip'
+			};
+		}
+
+		// Assumes signed `.xpi` from addons.mozilla.org
+		if (check(xpiZipFilename, {offset: 30})) {
+			return {
+				ext: 'xpi',
+				mime: 'application/x-xpinstall'
+			};
+		}
+
+		if (checkString('mimetypeapplication/vnd.oasis.opendocument.text', {offset: 30})) {
+			return {
+				ext: 'odt',
+				mime: 'application/vnd.oasis.opendocument.text'
+			};
+		}
+
+		if (checkString('mimetypeapplication/vnd.oasis.opendocument.spreadsheet', {offset: 30})) {
+			return {
+				ext: 'ods',
+				mime: 'application/vnd.oasis.opendocument.spreadsheet'
+			};
+		}
+
+		if (checkString('mimetypeapplication/vnd.oasis.opendocument.presentation', {offset: 30})) {
+			return {
+				ext: 'odp',
+				mime: 'application/vnd.oasis.opendocument.presentation'
+			};
+		}
+
+		// The docx, xlsx and pptx file types extend the Office Open XML file format:
+		// https://en.wikipedia.org/wiki/Office_Open_XML_file_formats
+		// We look for:
+		// - one entry named '[Content_Types].xml' or '_rels/.rels',
+		// - one entry indicating specific type of file.
+		// MS Office, OpenOffice and LibreOffice may put the parts in different order, so the check should not rely on it.
+		const findNextZipHeaderIndex = (arr, startAt = 0) => arr.findIndex((el, i, arr) => i >= startAt && arr[i] === 0x50 && arr[i + 1] === 0x4B && arr[i + 2] === 0x3 && arr[i + 3] === 0x4);
+
+		let zipHeaderIndex = 0; // The first zip header was already found at index 0
+		let oxmlFound = false;
+		let type = null;
+
+		do {
+			const offset = zipHeaderIndex + 30;
+
+			if (!oxmlFound) {
+				oxmlFound = (check(oxmlContentTypes, {offset}) || check(oxmlRels, {offset}));
+			}
+
+			if (!type) {
+				if (checkString('word/', {offset})) {
+					type = {
+						ext: 'docx',
+						mime: 'application/vnd.openxmlformats-officedocument.wordprocessingml.document'
+					};
+				} else if (checkString('ppt/', {offset})) {
+					type = {
+						ext: 'pptx',
+						mime: 'application/vnd.openxmlformats-officedocument.presentationml.presentation'
+					};
+				} else if (checkString('xl/', {offset})) {
+					type = {
+						ext: 'xlsx',
+						mime: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'
+					};
+				}
+			}
+
+			if (oxmlFound && type) {
+				return type;
+			}
+
+			zipHeaderIndex = findNextZipHeaderIndex(buf, offset);
+		} while (zipHeaderIndex >= 0);
+
+		// No more zip parts available in the buffer, but maybe we are almost certain about the type?
+		if (type) {
+			return type;
+		}
+	}
+
+	if (
+		check([0x50, 0x4B]) &&
+		(buf[2] === 0x3 || buf[2] === 0x5 || buf[2] === 0x7) &&
+		(buf[3] === 0x4 || buf[3] === 0x6 || buf[3] === 0x8)
+	) {
+		return {
+			ext: 'zip',
+			mime: 'application/zip'
+		};
+	}
+
+	if (check([0x75, 0x73, 0x74, 0x61, 0x72], {offset: 257})) {
+		return {
+			ext: 'tar',
+			mime: 'application/x-tar'
+		};
+	}
+
+	if (
+		check([0x52, 0x61, 0x72, 0x21, 0x1A, 0x7]) &&
+		(buf[6] === 0x0 || buf[6] === 0x1)
+	) {
+		return {
+			ext: 'rar',
+			mime: 'application/x-rar-compressed'
+		};
+	}
+
+	if (check([0x1F, 0x8B, 0x8])) {
+		return {
+			ext: 'gz',
+			mime: 'application/gzip'
+		};
+	}
+
+	if (check([0x42, 0x5A, 0x68])) {
+		return {
+			ext: 'bz2',
+			mime: 'application/x-bzip2'
+		};
+	}
+
+	if (check([0x37, 0x7A, 0xBC, 0xAF, 0x27, 0x1C])) {
+		return {
+			ext: '7z',
+			mime: 'application/x-7z-compressed'
+		};
+	}
+
+	if (check([0x78, 0x01])) {
+		return {
+			ext: 'dmg',
+			mime: 'application/x-apple-diskimage'
+		};
+	}
+
+	if (check([0x33, 0x67, 0x70, 0x35]) || // 3gp5
+		(
+			check([0x0, 0x0, 0x0]) && check([0x66, 0x74, 0x79, 0x70], {offset: 4}) &&
+				(
+					check([0x6D, 0x70, 0x34, 0x31], {offset: 8}) || // MP41
+					check([0x6D, 0x70, 0x34, 0x32], {offset: 8}) || // MP42
+					check([0x69, 0x73, 0x6F, 0x6D], {offset: 8}) || // ISOM
+					check([0x69, 0x73, 0x6F, 0x32], {offset: 8}) || // ISO2
+					check([0x6D, 0x6D, 0x70, 0x34], {offset: 8}) || // MMP4
+					check([0x4D, 0x34, 0x56], {offset: 8}) || // M4V
+					check([0x64, 0x61, 0x73, 0x68], {offset: 8}) // DASH
+				)
+		)) {
+		return {
+			ext: 'mp4',
+			mime: 'video/mp4'
+		};
+	}
+
+	if (check([0x4D, 0x54, 0x68, 0x64])) {
+		return {
+			ext: 'mid',
+			mime: 'audio/midi'
+		};
+	}
+
+	// https://github.com/threatstack/libmagic/blob/master/magic/Magdir/matroska
+	if (check([0x1A, 0x45, 0xDF, 0xA3])) {
+		const sliced = buf.subarray(4, 4 + 4096);
+		const idPos = sliced.findIndex((el, i, arr) => arr[i] === 0x42 && arr[i + 1] === 0x82);
+
+		if (idPos !== -1) {
+			const docTypePos = idPos + 3;
+			const findDocType = type => [...type].every((c, i) => sliced[docTypePos + i] === c.charCodeAt(0));
+
+			if (findDocType('matroska')) {
+				return {
+					ext: 'mkv',
+					mime: 'video/x-matroska'
+				};
+			}
+
+			if (findDocType('webm')) {
+				return {
+					ext: 'webm',
+					mime: 'video/webm'
+				};
+			}
+		}
+	}
+
+	if (check([0x0, 0x0, 0x0, 0x14, 0x66, 0x74, 0x79, 0x70, 0x71, 0x74, 0x20, 0x20]) ||
+		check([0x66, 0x72, 0x65, 0x65], {offset: 4}) || // Type: `free`
+		check([0x66, 0x74, 0x79, 0x70, 0x71, 0x74, 0x20, 0x20], {offset: 4}) ||
+		check([0x6D, 0x64, 0x61, 0x74], {offset: 4}) || // MJPEG
+		check([0x6D, 0x6F, 0x6F, 0x76], {offset: 4}) || // Type: `moov`
+		check([0x77, 0x69, 0x64, 0x65], {offset: 4})) {
+		return {
+			ext: 'mov',
+			mime: 'video/quicktime'
+		};
+	}
+
+	// RIFF file format which might be AVI, WAV, QCP, etc
+	if (check([0x52, 0x49, 0x46, 0x46])) {
+		if (check([0x41, 0x56, 0x49], {offset: 8})) {
+			return {
+				ext: 'avi',
+				mime: 'video/vnd.avi'
+			};
+		}
+
+		if (check([0x57, 0x41, 0x56, 0x45], {offset: 8})) {
+			return {
+				ext: 'wav',
+				mime: 'audio/vnd.wave'
+			};
+		}
+
+		// QLCM, QCP file
+		if (check([0x51, 0x4C, 0x43, 0x4D], {offset: 8})) {
+			return {
+				ext: 'qcp',
+				mime: 'audio/qcelp'
+			};
+		}
+	}
+
+	// ASF_Header_Object first 80 bytes
+	if (check([0x30, 0x26, 0xB2, 0x75, 0x8E, 0x66, 0xCF, 0x11, 0xA6, 0xD9])) {
+		// Search for header should be in first 1KB of file.
+
+		let offset = 30;
+		do {
+			const objectSize = readUInt64LE(buf, offset + 16);
+			if (check([0x91, 0x07, 0xDC, 0xB7, 0xB7, 0xA9, 0xCF, 0x11, 0x8E, 0xE6, 0x00, 0xC0, 0x0C, 0x20, 0x53, 0x65], {offset})) {
+				// Sync on Stream-Properties-Object (B7DC0791-A9B7-11CF-8EE6-00C00C205365)
+				if (check([0x40, 0x9E, 0x69, 0xF8, 0x4D, 0x5B, 0xCF, 0x11, 0xA8, 0xFD, 0x00, 0x80, 0x5F, 0x5C, 0x44, 0x2B], {offset: offset + 24})) {
+					// Found audio:
+					return {
+						ext: 'wma',
+						mime: 'audio/x-ms-wma'
+					};
+				}
+
+				if (check([0xC0, 0xEF, 0x19, 0xBC, 0x4D, 0x5B, 0xCF, 0x11, 0xA8, 0xFD, 0x00, 0x80, 0x5F, 0x5C, 0x44, 0x2B], {offset: offset + 24})) {
+					// Found video:
+					return {
+						ext: 'wmv',
+						mime: 'video/x-ms-asf'
+					};
+				}
+
+				break;
+			}
+
+			offset += objectSize;
+		} while (offset + 24 <= buf.length);
+
+		// Default to ASF generic extension
+		return {
+			ext: 'asf',
+			mime: 'application/vnd.ms-asf'
+		};
+	}
+
+	if (
+		check([0x0, 0x0, 0x1, 0xBA]) ||
+		check([0x0, 0x0, 0x1, 0xB3])
+	) {
+		return {
+			ext: 'mpg',
+			mime: 'video/mpeg'
+		};
+	}
+
+	if (check([0x66, 0x74, 0x79, 0x70, 0x33, 0x67], {offset: 4})) {
+		return {
+			ext: '3gp',
+			mime: 'video/3gpp'
+		};
+	}
+
+	// Check for MPEG header at different starting offsets
+	for (let start = 0; start < 2 && start < (buf.length - 16); start++) {
+		if (
+			check([0x49, 0x44, 0x33], {offset: start}) || // ID3 header
+			check([0xFF, 0xE2], {offset: start, mask: [0xFF, 0xE2]}) // MPEG 1 or 2 Layer 3 header
+		) {
+			return {
+				ext: 'mp3',
+				mime: 'audio/mpeg'
+			};
+		}
+
+		if (
+			check([0xFF, 0xE4], {offset: start, mask: [0xFF, 0xE4]}) // MPEG 1 or 2 Layer 2 header
+		) {
+			return {
+				ext: 'mp2',
+				mime: 'audio/mpeg'
+			};
+		}
+
+		if (
+			check([0xFF, 0xF8], {offset: start, mask: [0xFF, 0xFC]}) // MPEG 2 layer 0 using ADTS
+		) {
+			return {
+				ext: 'mp2',
+				mime: 'audio/mpeg'
+			};
+		}
+
+		if (
+			check([0xFF, 0xF0], {offset: start, mask: [0xFF, 0xFC]}) // MPEG 4 layer 0 using ADTS
+		) {
+			return {
+				ext: 'mp4',
+				mime: 'audio/mpeg'
+			};
+		}
+	}
+
+	if (
+		check([0x66, 0x74, 0x79, 0x70, 0x4D, 0x34, 0x41], {offset: 4})
+	) {
+		return { // MPEG-4 layer 3 (audio)
+			ext: 'm4a',
+			mime: 'audio/mp4' // RFC 4337
+		};
+	}
+
+	// Needs to be before `ogg` check
+	if (check([0x4F, 0x70, 0x75, 0x73, 0x48, 0x65, 0x61, 0x64], {offset: 28})) {
+		return {
+			ext: 'opus',
+			mime: 'audio/opus'
+		};
+	}
+
+	// If 'OggS' in first  bytes, then OGG container
+	if (check([0x4F, 0x67, 0x67, 0x53])) {
+		// This is a OGG container
+
+		// If ' theora' in header.
+		if (check([0x80, 0x74, 0x68, 0x65, 0x6F, 0x72, 0x61], {offset: 28})) {
+			return {
+				ext: 'ogv',
+				mime: 'video/ogg'
+			};
+		}
+
+		// If '\x01video' in header.
+		if (check([0x01, 0x76, 0x69, 0x64, 0x65, 0x6F, 0x00], {offset: 28})) {
+			return {
+				ext: 'ogm',
+				mime: 'video/ogg'
+			};
+		}
+
+		// If ' FLAC' in header  https://xiph.org/flac/faq.html
+		if (check([0x7F, 0x46, 0x4C, 0x41, 0x43], {offset: 28})) {
+			return {
+				ext: 'oga',
+				mime: 'audio/ogg'
+			};
+		}
+
+		// 'Speex  ' in header https://en.wikipedia.org/wiki/Speex
+		if (check([0x53, 0x70, 0x65, 0x65, 0x78, 0x20, 0x20], {offset: 28})) {
+			return {
+				ext: 'spx',
+				mime: 'audio/ogg'
+			};
+		}
+
+		// If '\x01vorbis' in header
+		if (check([0x01, 0x76, 0x6F, 0x72, 0x62, 0x69, 0x73], {offset: 28})) {
+			return {
+				ext: 'ogg',
+				mime: 'audio/ogg'
+			};
+		}
+
+		// Default OGG container https://www.iana.org/assignments/media-types/application/ogg
+		return {
+			ext: 'ogx',
+			mime: 'application/ogg'
+		};
+	}
+
+	if (check([0x66, 0x4C, 0x61, 0x43])) {
+		return {
+			ext: 'flac',
+			mime: 'audio/x-flac'
+		};
+	}
+
+	if (check([0x4D, 0x41, 0x43, 0x20])) { // 'MAC '
+		return {
+			ext: 'ape',
+			mime: 'audio/ape'
+		};
+	}
+
+	if (check([0x77, 0x76, 0x70, 0x6B])) { // 'wvpk'
+		return {
+			ext: 'wv',
+			mime: 'audio/wavpack'
+		};
+	}
+
+	if (check([0x23, 0x21, 0x41, 0x4D, 0x52, 0x0A])) {
+		return {
+			ext: 'amr',
+			mime: 'audio/amr'
+		};
+	}
+
+	if (check([0x25, 0x50, 0x44, 0x46])) {
+		return {
+			ext: 'pdf',
+			mime: 'application/pdf'
+		};
+	}
+
+	if (check([0x4D, 0x5A])) {
+		return {
+			ext: 'exe',
+			mime: 'application/x-msdownload'
+		};
+	}
+
+	if (
+		(buf[0] === 0x43 || buf[0] === 0x46) &&
+		check([0x57, 0x53], {offset: 1})
+	) {
+		return {
+			ext: 'swf',
+			mime: 'application/x-shockwave-flash'
+		};
+	}
+
+	if (check([0x7B, 0x5C, 0x72, 0x74, 0x66])) {
+		return {
+			ext: 'rtf',
+			mime: 'application/rtf'
+		};
+	}
+
+	if (check([0x00, 0x61, 0x73, 0x6D])) {
+		return {
+			ext: 'wasm',
+			mime: 'application/wasm'
+		};
+	}
+
+	if (
+		check([0x77, 0x4F, 0x46, 0x46]) &&
+		(
+			check([0x00, 0x01, 0x00, 0x00], {offset: 4}) ||
+			check([0x4F, 0x54, 0x54, 0x4F], {offset: 4})
+		)
+	) {
+		return {
+			ext: 'woff',
+			mime: 'font/woff'
+		};
+	}
+
+	if (
+		check([0x77, 0x4F, 0x46, 0x32]) &&
+		(
+			check([0x00, 0x01, 0x00, 0x00], {offset: 4}) ||
+			check([0x4F, 0x54, 0x54, 0x4F], {offset: 4})
+		)
+	) {
+		return {
+			ext: 'woff2',
+			mime: 'font/woff2'
+		};
+	}
+
+	if (
+		check([0x4C, 0x50], {offset: 34}) &&
+		(
+			check([0x00, 0x00, 0x01], {offset: 8}) ||
+			check([0x01, 0x00, 0x02], {offset: 8}) ||
+			check([0x02, 0x00, 0x02], {offset: 8})
+		)
+	) {
+		return {
+			ext: 'eot',
+			mime: 'application/vnd.ms-fontobject'
+		};
+	}
+
+	if (check([0x00, 0x01, 0x00, 0x00, 0x00])) {
+		return {
+			ext: 'ttf',
+			mime: 'font/ttf'
+		};
+	}
+
+	if (check([0x4F, 0x54, 0x54, 0x4F, 0x00])) {
+		return {
+			ext: 'otf',
+			mime: 'font/otf'
+		};
+	}
+
+	if (check([0x00, 0x00, 0x01, 0x00])) {
+		return {
+			ext: 'ico',
+			mime: 'image/x-icon'
+		};
+	}
+
+	if (check([0x00, 0x00, 0x02, 0x00])) {
+		return {
+			ext: 'cur',
+			mime: 'image/x-icon'
+		};
+	}
+
+	if (check([0x46, 0x4C, 0x56, 0x01])) {
+		return {
+			ext: 'flv',
+			mime: 'video/x-flv'
+		};
+	}
+
+	if (check([0x25, 0x21])) {
+		return {
+			ext: 'ps',
+			mime: 'application/postscript'
+		};
+	}
+
+	if (check([0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00])) {
+		return {
+			ext: 'xz',
+			mime: 'application/x-xz'
+		};
+	}
+
+	if (check([0x53, 0x51, 0x4C, 0x69])) {
+		return {
+			ext: 'sqlite',
+			mime: 'application/x-sqlite3'
+		};
+	}
+
+	if (check([0x4E, 0x45, 0x53, 0x1A])) {
+		return {
+			ext: 'nes',
+			mime: 'application/x-nintendo-nes-rom'
+		};
+	}
+
+	if (check([0x43, 0x72, 0x32, 0x34])) {
+		return {
+			ext: 'crx',
+			mime: 'application/x-google-chrome-extension'
+		};
+	}
+
+	if (
+		check([0x4D, 0x53, 0x43, 0x46]) ||
+		check([0x49, 0x53, 0x63, 0x28])
+	) {
+		return {
+			ext: 'cab',
+			mime: 'application/vnd.ms-cab-compressed'
+		};
+	}
+
+	// Needs to be before `ar` check
+	if (check([0x21, 0x3C, 0x61, 0x72, 0x63, 0x68, 0x3E, 0x0A, 0x64, 0x65, 0x62, 0x69, 0x61, 0x6E, 0x2D, 0x62, 0x69, 0x6E, 0x61, 0x72, 0x79])) {
+		return {
+			ext: 'deb',
+			mime: 'application/x-deb'
+		};
+	}
+
+	if (check([0x21, 0x3C, 0x61, 0x72, 0x63, 0x68, 0x3E])) {
+		return {
+			ext: 'ar',
+			mime: 'application/x-unix-archive'
+		};
+	}
+
+	if (check([0xED, 0xAB, 0xEE, 0xDB])) {
+		return {
+			ext: 'rpm',
+			mime: 'application/x-rpm'
+		};
+	}
+
+	if (
+		check([0x1F, 0xA0]) ||
+		check([0x1F, 0x9D])
+	) {
+		return {
+			ext: 'Z',
+			mime: 'application/x-compress'
+		};
+	}
+
+	if (check([0x4C, 0x5A, 0x49, 0x50])) {
+		return {
+			ext: 'lz',
+			mime: 'application/x-lzip'
+		};
+	}
+
+	if (check([0xD0, 0xCF, 0x11, 0xE0, 0xA1, 0xB1, 0x1A, 0xE1])) {
+		return {
+			ext: 'msi',
+			mime: 'application/x-msi'
+		};
+	}
+
+	if (check([0x06, 0x0E, 0x2B, 0x34, 0x02, 0x05, 0x01, 0x01, 0x0D, 0x01, 0x02, 0x01, 0x01, 0x02])) {
+		return {
+			ext: 'mxf',
+			mime: 'application/mxf'
+		};
+	}
+
+	if (check([0x47], {offset: 4}) && (check([0x47], {offset: 192}) || check([0x47], {offset: 196}))) {
+		return {
+			ext: 'mts',
+			mime: 'video/mp2t'
+		};
+	}
+
+	if (check([0x42, 0x4C, 0x45, 0x4E, 0x44, 0x45, 0x52])) {
+		return {
+			ext: 'blend',
+			mime: 'application/x-blender'
+		};
+	}
+
+	if (check([0x42, 0x50, 0x47, 0xFB])) {
+		return {
+			ext: 'bpg',
+			mime: 'image/bpg'
+		};
+	}
+
+	if (check([0x00, 0x00, 0x00, 0x0C, 0x6A, 0x50, 0x20, 0x20, 0x0D, 0x0A, 0x87, 0x0A])) {
+		// JPEG-2000 family
+
+		if (check([0x6A, 0x70, 0x32, 0x20], {offset: 20})) {
+			return {
+				ext: 'jp2',
+				mime: 'image/jp2'
+			};
+		}
+
+		if (check([0x6A, 0x70, 0x78, 0x20], {offset: 20})) {
+			return {
+				ext: 'jpx',
+				mime: 'image/jpx'
+			};
+		}
+
+		if (check([0x6A, 0x70, 0x6D, 0x20], {offset: 20})) {
+			return {
+				ext: 'jpm',
+				mime: 'image/jpm'
+			};
+		}
+
+		if (check([0x6D, 0x6A, 0x70, 0x32], {offset: 20})) {
+			return {
+				ext: 'mj2',
+				mime: 'image/mj2'
+			};
+		}
+	}
+
+	if (check([0x46, 0x4F, 0x52, 0x4D])) {
+		return {
+			ext: 'aif',
+			mime: 'audio/aiff'
+		};
+	}
+
+	if (checkString('<?xml ')) {
+		return {
+			ext: 'xml',
+			mime: 'application/xml'
+		};
+	}
+
+	if (check([0x42, 0x4F, 0x4F, 0x4B, 0x4D, 0x4F, 0x42, 0x49], {offset: 60})) {
+		return {
+			ext: 'mobi',
+			mime: 'application/x-mobipocket-ebook'
+		};
+	}
+
+	// File Type Box (https://en.wikipedia.org/wiki/ISO_base_media_file_format)
+	if (check([0x66, 0x74, 0x79, 0x70], {offset: 4})) {
+		if (check([0x6D, 0x69, 0x66, 0x31], {offset: 8})) {
+			return {
+				ext: 'heic',
+				mime: 'image/heif'
+			};
+		}
+
+		if (check([0x6D, 0x73, 0x66, 0x31], {offset: 8})) {
+			return {
+				ext: 'heic',
+				mime: 'image/heif-sequence'
+			};
+		}
+
+		if (check([0x68, 0x65, 0x69, 0x63], {offset: 8}) || check([0x68, 0x65, 0x69, 0x78], {offset: 8})) {
+			return {
+				ext: 'heic',
+				mime: 'image/heic'
+			};
+		}
+
+		if (check([0x68, 0x65, 0x76, 0x63], {offset: 8}) || check([0x68, 0x65, 0x76, 0x78], {offset: 8})) {
+			return {
+				ext: 'heic',
+				mime: 'image/heic-sequence'
+			};
+		}
+	}
+
+	if (check([0xAB, 0x4B, 0x54, 0x58, 0x20, 0x31, 0x31, 0xBB, 0x0D, 0x0A, 0x1A, 0x0A])) {
+		return {
+			ext: 'ktx',
+			mime: 'image/ktx'
+		};
+	}
+
+	if (check([0x44, 0x49, 0x43, 0x4D], {offset: 128})) {
+		return {
+			ext: 'dcm',
+			mime: 'application/dicom'
+		};
+	}
+
+	// Musepack, SV7
+	if (check([0x4D, 0x50, 0x2B])) {
+		return {
+			ext: 'mpc',
+			mime: 'audio/x-musepack'
+		};
+	}
+
+	// Musepack, SV8
+	if (check([0x4D, 0x50, 0x43, 0x4B])) {
+		return {
+			ext: 'mpc',
+			mime: 'audio/x-musepack'
+		};
+	}
+
+	if (check([0x42, 0x45, 0x47, 0x49, 0x4E, 0x3A])) {
+		return {
+			ext: 'ics',
+			mime: 'text/calendar'
+		};
+	}
+
+	if (check([0x67, 0x6C, 0x54, 0x46, 0x02, 0x00, 0x00, 0x00])) {
+		return {
+			ext: 'glb',
+			mime: 'model/gltf-binary'
+		};
+	}
+
+	if (check([0xD4, 0xC3, 0xB2, 0xA1]) || check([0xA1, 0xB2, 0xC3, 0xD4])) {
+		return {
+			ext: 'pcap',
+			mime: 'application/vnd.tcpdump.pcap'
+		};
+	}
+
+	return null;
+};
+
+module.exports = fileType;
+// TODO: Remove this for the next major release
+module.exports.default = fileType;
+
+Object.defineProperty(fileType, 'minimumBytes', {value: 4100});
+
+module.exports.stream = readableStream => new Promise((resolve, reject) => {
+	// Using `eval` to work around issues when bundling with Webpack
+	const stream = eval('require')('stream'); // eslint-disable-line no-eval
+
+	readableStream.once('readable', () => {
+		const pass = new stream.PassThrough();
+		const chunk = readableStream.read(module.exports.minimumBytes) || readableStream.read();
+		try {
+			pass.fileType = fileType(chunk);
+		} catch (error) {
+			reject(error);
+		}
+
+		readableStream.unshift(chunk);
+
+		if (stream.pipeline) {
+			resolve(stream.pipeline(readableStream, pass, () => {}));
+		} else {
+			resolve(readableStream.pipe(pass));
+		}
+	});
+});

node_modules/is-gif/node_modules/file-type/license

@@ -0,0 +1,9 @@
+MIT License
+
+Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

node_modules/is-gif/node_modules/file-type/package.json

@@ -0,0 +1,131 @@
+{
+	"name": "file-type",
+	"version": "10.11.0",
+	"description": "Detect the file type of a Buffer/Uint8Array/ArrayBuffer",
+	"license": "MIT",
+	"repository": "sindresorhus/file-type",
+	"author": {
+		"name": "Sindre Sorhus",
+		"email": "sindresorhus@gmail.com",
+		"url": "sindresorhus.com"
+	},
+	"engines": {
+		"node": ">=6"
+	},
+	"scripts": {
+		"test": "xo && ava && tsd"
+	},
+	"files": [
+		"index.js",
+		"index.d.ts"
+	],
+	"keywords": [
+		"mime",
+		"file",
+		"type",
+		"archive",
+		"image",
+		"img",
+		"pic",
+		"picture",
+		"flash",
+		"photo",
+		"video",
+		"detect",
+		"check",
+		"is",
+		"exif",
+		"exe",
+		"binary",
+		"buffer",
+		"uint8array",
+		"jpg",
+		"png",
+		"gif",
+		"webp",
+		"flif",
+		"cr2",
+		"tif",
+		"bmp",
+		"jxr",
+		"psd",
+		"zip",
+		"tar",
+		"rar",
+		"gz",
+		"bz2",
+		"7z",
+		"dmg",
+		"mp4",
+		"m4v",
+		"mid",
+		"mkv",
+		"webm",
+		"mov",
+		"avi",
+		"mpg",
+		"mp2",
+		"mp3",
+		"m4a",
+		"ogg",
+		"opus",
+		"flac",
+		"wav",
+		"amr",
+		"pdf",
+		"epub",
+		"mobi",
+		"swf",
+		"rtf",
+		"woff",
+		"woff2",
+		"eot",
+		"ttf",
+		"otf",
+		"ico",
+		"flv",
+		"ps",
+		"xz",
+		"sqlite",
+		"xpi",
+		"cab",
+		"deb",
+		"ar",
+		"rpm",
+		"Z",
+		"lz",
+		"msi",
+		"mxf",
+		"mts",
+		"wasm",
+		"webassembly",
+		"blend",
+		"bpg",
+		"docx",
+		"pptx",
+		"xlsx",
+		"3gp",
+		"jp2",
+		"jpm",
+		"jpx",
+		"mj2",
+		"aif",
+		"odt",
+		"ods",
+		"odp",
+		"xml",
+		"heic",
+		"wma",
+		"ics",
+		"glb",
+		"pcap"
+	],
+	"devDependencies": {
+		"@types/node": "^11.12.2",
+		"ava": "^1.4.1",
+		"pify": "^4.0.1",
+		"read-chunk": "^3.2.0",
+		"tsd": "^0.7.1",
+		"xo": "^0.24.0"
+	}
+}

node_modules/is-gif/node_modules/file-type/readme.md

@@ -0,0 +1,238 @@
+# file-type [![Build Status](https://travis-ci.org/sindresorhus/file-type.svg?branch=master)](https://travis-ci.org/sindresorhus/file-type)
+
+> Detect the file type of a Buffer/Uint8Array/ArrayBuffer
+
+The file type is detected by checking the [magic number](https://en.wikipedia.org/wiki/Magic_number_(programming)#Magic_numbers_in_files) of the buffer.
+
+
+## Install
+
+```
+$ npm install file-type
+```
+
+<a href="https://www.patreon.com/sindresorhus">
+	<img src="https://c5.patreon.com/external/logo/become_a_patron_button@2x.png" width="160">
+</a>
+
+
+## Usage
+
+##### Node.js
+
+```js
+const readChunk = require('read-chunk');
+const fileType = require('file-type');
+
+const buffer = readChunk.sync('unicorn.png', 0, fileType.minimumBytes);
+
+fileType(buffer);
+//=> {ext: 'png', mime: 'image/png'}
+```
+
+Or from a remote location:
+
+```js
+const http = require('http');
+const fileType = require('file-type');
+
+const url = 'https://assets-cdn.github.com/images/spinners/octocat-spinner-32.gif';
+
+http.get(url, response => {
+	response.on('readable', () => {
+		const chunk = response.read(fileType.minimumBytes);
+		response.destroy();
+		console.log(fileType(chunk));
+		//=> {ext: 'gif', mime: 'image/gif'}
+	});
+});
+```
+
+Or from a stream:
+
+```js
+const fs = require('fs');
+const crypto = require('crypto');
+const fileType = require('file-type');
+
+(async () => {
+	const read = fs.createReadStream('encrypted.enc');
+	const decipher = crypto.createDecipheriv(alg, key, iv);
+
+	const stream = await fileType.stream(read.pipe(decipher));
+
+	console.log(stream.fileType);
+	//=> {ext: 'mov', mime: 'video/quicktime'}
+
+	const write = fs.createWriteStream(`decrypted.${stream.fileType.ext}`);
+	stream.pipe(write);
+})();
+```
+
+
+##### Browser
+
+```js
+const xhr = new XMLHttpRequest();
+xhr.open('GET', 'unicorn.png');
+xhr.responseType = 'arraybuffer';
+
+xhr.onload = () => {
+	fileType(new Uint8Array(this.response));
+	//=> {ext: 'png', mime: 'image/png'}
+};
+
+xhr.send();
+```
+
+
+## API
+
+### fileType(input)
+
+Returns an `Object` with:
+
+- `ext` - One of the [supported file types](#supported-file-types)
+- `mime` - The [MIME type](https://en.wikipedia.org/wiki/Internet_media_type)
+
+Or `null` when there is no match.
+
+#### input
+
+Type: `Buffer | Uint8Array | ArrayBuffer`
+
+It only needs the first `.minimumBytes` bytes. The exception is detection of `docx`, `pptx`, and `xlsx` which potentially requires reading the whole file.
+
+### fileType.minimumBytes
+
+Type: `number`
+
+The minimum amount of bytes needed to detect a file type. Currently, it's 4100 bytes, but it can change, so don't hardcode it.
+
+### fileType.stream(readableStream)
+
+Detect the file type of a readable stream.
+
+Returns a `Promise` which resolves to the original readable stream argument, but with an added `fileType` property, which is an object like the one returned from `fileType()`.
+
+*Note:* This method is only for Node.js.
+
+#### readableStream
+
+Type: [`stream.Readable`](https://nodejs.org/api/stream.html#stream_class_stream_readable)
+
+
+## Supported file types
+
+- [`jpg`](https://en.wikipedia.org/wiki/JPEG)
+- [`png`](https://en.wikipedia.org/wiki/Portable_Network_Graphics)
+- [`gif`](https://en.wikipedia.org/wiki/GIF)
+- [`webp`](https://en.wikipedia.org/wiki/WebP)
+- [`flif`](https://en.wikipedia.org/wiki/Free_Lossless_Image_Format)
+- [`cr2`](https://fileinfo.com/extension/cr2)
+- [`tif`](https://en.wikipedia.org/wiki/Tagged_Image_File_Format)
+- [`bmp`](https://en.wikipedia.org/wiki/BMP_file_format)
+- [`jxr`](https://en.wikipedia.org/wiki/JPEG_XR)
+- [`psd`](https://en.wikipedia.org/wiki/Adobe_Photoshop#File_format)
+- [`zip`](https://en.wikipedia.org/wiki/Zip_(file_format))
+- [`tar`](https://en.wikipedia.org/wiki/Tar_(computing)#File_format)
+- [`rar`](https://en.wikipedia.org/wiki/RAR_(file_format))
+- [`gz`](https://en.wikipedia.org/wiki/Gzip)
+- [`bz2`](https://en.wikipedia.org/wiki/Bzip2)
+- [`7z`](https://en.wikipedia.org/wiki/7z)
+- [`dmg`](https://en.wikipedia.org/wiki/Apple_Disk_Image)
+- [`mp4`](https://en.wikipedia.org/wiki/MPEG-4_Part_14#Filename_extensions)
+- [`m4v`](https://en.wikipedia.org/wiki/M4V)
+- [`mid`](https://en.wikipedia.org/wiki/MIDI)
+- [`mkv`](https://en.wikipedia.org/wiki/Matroska)
+- [`webm`](https://en.wikipedia.org/wiki/WebM)
+- [`mov`](https://en.wikipedia.org/wiki/QuickTime_File_Format)
+- [`avi`](https://en.wikipedia.org/wiki/Audio_Video_Interleave)
+- [`wmv`](https://en.wikipedia.org/wiki/Windows_Media_Video)
+- [`mpg`](https://en.wikipedia.org/wiki/MPEG-1)
+- [`mp2`](https://en.wikipedia.org/wiki/MPEG-1_Audio_Layer_II)
+- [`mp3`](https://en.wikipedia.org/wiki/MP3)
+- [`m4a`](https://en.wikipedia.org/wiki/MPEG-4_Part_14#.MP4_versus_.M4A)
+- [`ogg`](https://en.wikipedia.org/wiki/Ogg)
+- [`opus`](https://en.wikipedia.org/wiki/Opus_(audio_format))
+- [`flac`](https://en.wikipedia.org/wiki/FLAC)
+- [`wav`](https://en.wikipedia.org/wiki/WAV)
+- [`qcp`](https://en.wikipedia.org/wiki/QCP)
+- [`amr`](https://en.wikipedia.org/wiki/Adaptive_Multi-Rate_audio_codec)
+- [`pdf`](https://en.wikipedia.org/wiki/Portable_Document_Format)
+- [`epub`](https://en.wikipedia.org/wiki/EPUB)
+- [`mobi`](https://en.wikipedia.org/wiki/Mobipocket) - Mobipocket
+- [`exe`](https://en.wikipedia.org/wiki/.exe)
+- [`swf`](https://en.wikipedia.org/wiki/SWF)
+- [`rtf`](https://en.wikipedia.org/wiki/Rich_Text_Format)
+- [`woff`](https://en.wikipedia.org/wiki/Web_Open_Font_Format)
+- [`woff2`](https://en.wikipedia.org/wiki/Web_Open_Font_Format)
+- [`eot`](https://en.wikipedia.org/wiki/Embedded_OpenType)
+- [`ttf`](https://en.wikipedia.org/wiki/TrueType)
+- [`otf`](https://en.wikipedia.org/wiki/OpenType)
+- [`ico`](https://en.wikipedia.org/wiki/ICO_(file_format))
+- [`flv`](https://en.wikipedia.org/wiki/Flash_Video)
+- [`ps`](https://en.wikipedia.org/wiki/Postscript)
+- [`xz`](https://en.wikipedia.org/wiki/Xz)
+- [`sqlite`](https://www.sqlite.org/fileformat2.html)
+- [`nes`](https://fileinfo.com/extension/nes)
+- [`crx`](https://developer.chrome.com/extensions/crx)
+- [`xpi`](https://en.wikipedia.org/wiki/XPInstall)
+- [`cab`](https://en.wikipedia.org/wiki/Cabinet_(file_format))
+- [`deb`](https://en.wikipedia.org/wiki/Deb_(file_format))
+- [`ar`](https://en.wikipedia.org/wiki/Ar_(Unix))
+- [`rpm`](https://fileinfo.com/extension/rpm)
+- [`Z`](https://fileinfo.com/extension/z)
+- [`lz`](https://en.wikipedia.org/wiki/Lzip)
+- [`msi`](https://en.wikipedia.org/wiki/Windows_Installer)
+- [`mxf`](https://en.wikipedia.org/wiki/Material_Exchange_Format)
+- [`mts`](https://en.wikipedia.org/wiki/.m2ts)
+- [`wasm`](https://en.wikipedia.org/wiki/WebAssembly)
+- [`blend`](https://wiki.blender.org/index.php/Dev:Source/Architecture/File_Format)
+- [`bpg`](https://bellard.org/bpg/)
+- [`docx`](https://en.wikipedia.org/wiki/Office_Open_XML)
+- [`pptx`](https://en.wikipedia.org/wiki/Office_Open_XML)
+- [`xlsx`](https://en.wikipedia.org/wiki/Office_Open_XML)
+- [`3gp`](https://en.wikipedia.org/wiki/3GP_and_3G2)
+- [`jp2`](https://en.wikipedia.org/wiki/JPEG_2000) - JPEG 2000
+- [`jpm`](https://en.wikipedia.org/wiki/JPEG_2000) - JPEG 2000
+- [`jpx`](https://en.wikipedia.org/wiki/JPEG_2000) - JPEG 2000
+- [`mj2`](https://en.wikipedia.org/wiki/Motion_JPEG_2000) - Motion JPEG 2000
+- [`aif`](https://en.wikipedia.org/wiki/Audio_Interchange_File_Format)
+- [`odt`](https://en.wikipedia.org/wiki/OpenDocument) - OpenDocument for word processing
+- [`ods`](https://en.wikipedia.org/wiki/OpenDocument) - OpenDocument for spreadsheets
+- [`odp`](https://en.wikipedia.org/wiki/OpenDocument) - OpenDocument for presentations
+- [`xml`](https://en.wikipedia.org/wiki/XML)
+- [`heic`](https://nokiatech.github.io/heif/technical.html)
+- [`cur`](https://en.wikipedia.org/wiki/ICO_(file_format))
+- [`ktx`](https://www.khronos.org/opengles/sdk/tools/KTX/file_format_spec/)
+- [`ape`](https://en.wikipedia.org/wiki/Monkey%27s_Audio) - Monkey's Audio
+- [`wv`](https://en.wikipedia.org/wiki/WavPack) - WavPack
+- [`asf`](https://en.wikipedia.org/wiki/Advanced_Systems_Format) - Advanced Systems Format
+- [`wma`](https://en.wikipedia.org/wiki/Windows_Media_Audio) - Windows Media Audio
+- [`wmv`](https://en.wikipedia.org/wiki/Windows_Media_Video) - Windows Media Video
+- [`dcm`](https://en.wikipedia.org/wiki/DICOM#Data_format) - DICOM Image File
+- [`mpc`](https://en.wikipedia.org/wiki/Musepack) - Musepack (SV7 & SV8)
+- [`ics`](https://en.wikipedia.org/wiki/ICalendar#Data_format) - iCalendar
+- [`glb`](https://github.com/KhronosGroup/glTF) - GL Transmission Format
+- [`pcap`](https://wiki.wireshark.org/Development/LibpcapFileFormat) - Libpcap File Format
+
+*SVG isn't included as it requires the whole file to be read, but you can get it [here](https://github.com/sindresorhus/is-svg).*
+
+*Pull request welcome for additional commonly used file types.*
+
+
+## Related
+
+- [file-type-cli](https://github.com/sindresorhus/file-type-cli) - CLI for this module
+
+
+## Created by
+
+- [Sindre Sorhus](https://github.com/sindresorhus)
+- [Mikael Finstad](https://github.com/mifi)
+
+
+## License
+
+MIT

node_modules/is-gif/package.json

@@ -1,42 +1,45 @@
 {
-  "name": "is-gif",
-  "version": "1.0.0",
-  "description": "Check if a Buffer/Uint8Array is a GIF image",
-  "license": "MIT",
-  "repository": "sindresorhus/is-gif",
-  "author": {
-    "name": "Sindre Sorhus",
-    "email": "sindresorhus@gmail.com",
-    "url": "http://sindresorhus.com"
-  },
-  "engines": {
-    "node": ">=0.10.0"
-  },
-  "scripts": {
-    "test": "mocha"
-  },
-  "files": [
-    "index.js"
-  ],
-  "keywords": [
-    "gif",
-    "graphics",
-    "image",
-    "img",
-    "pic",
-    "picture",
-    "photo",
-    "type",
-    "detect",
-    "check",
-    "is",
-    "exif",
-    "binary",
-    "buffer",
-    "uint8array"
-  ],
-  "devDependencies": {
-    "mocha": "*",
-    "read-chunk": "^1.0.0"
-  }
+	"name": "is-gif",
+	"version": "3.0.0",
+	"description": "Check if a Buffer/Uint8Array is a GIF image",
+	"license": "MIT",
+	"repository": "sindresorhus/is-gif",
+	"author": {
+		"name": "Sindre Sorhus",
+		"email": "sindresorhus@gmail.com",
+		"url": "sindresorhus.com"
+	},
+	"engines": {
+		"node": ">=6"
+	},
+	"scripts": {
+		"test": "xo && ava"
+	},
+	"files": [
+		"index.js"
+	],
+	"keywords": [
+		"gif",
+		"graphics",
+		"image",
+		"img",
+		"pic",
+		"picture",
+		"photo",
+		"type",
+		"detect",
+		"check",
+		"is",
+		"exif",
+		"binary",
+		"buffer",
+		"uint8array"
+	],
+	"dependencies": {
+		"file-type": "^10.4.0"
+	},
+	"devDependencies": {
+		"ava": "^0.25.0",
+		"xo": "^0.23.0"
+	}
 }

node_modules/is-gif/readme.md

@@ -1,55 +1,44 @@
-# is-gif [![Build Status](https://travis-ci.org/sindresorhus/is-gif.svg?branch=master)](https://travis-ci.org/sindresorhus/is-gif)
+# is-gif [![Build Status](https://travis-ci.com/sindresorhus/is-gif.svg?branch=master)](https://travis-ci.com/sindresorhus/is-gif)
 
-> Check if a Buffer/Uint8Array is a [GIF](http://en.wikipedia.org/wiki/Graphics_Interchange_Format) image
-
-Used by [image-type](https://github.com/sindresorhus/image-type).
+> Check if a Buffer/Uint8Array is a [GIF](https://en.wikipedia.org/wiki/Graphics_Interchange_Format) image
 
 
 ## Install
 
-```sh
-$ npm install --save is-gif
+```
+$ npm install is-gif
 ```
 
 
 ## Usage
 
-##### Node.js
-
 ```js
-var readChunk = require('read-chunk'); // npm install read-chunk
-var isGif = require('is-gif');
-var buffer = readChunk.sync('unicorn.gif', 0, 3);
+const readChunk = require('read-chunk');
+const isGif = require('is-gif');
+
+const buffer = readChunk.sync('unicorn.gif', 0, 3);
 
 isGif(buffer);
 //=> true
 ```
 
-##### Browser
-
-```js
-var xhr = new XMLHttpRequest();
-xhr.open('GET', 'unicorn.gif');
-xhr.responseType = 'arraybuffer';
-
-xhr.onload = function () {
-	isGif(new Uint8Array(this.response));
-	//=> true
-};
-
-xhr.send();
-```
-
 
 ## API
 
-### isGif(buffer)
+### isGif(input)
 
-Accepts a Buffer (Node.js) or Uint8Array.
+#### input
+
+Type: `Buffer` `Uint8Array`
 
 It only needs the first 3 bytes.
 
 
+## Related
+
+- [file-type](https://github.com/sindresorhus/file-type) - Detect the file type of a Buffer/Uint8Array
+
+
 ## License
 
-MIT © [Sindre Sorhus](http://sindresorhus.com)
+MIT © [Sindre Sorhus](https://sindresorhus.com)