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build/node_modules/is-cwebp-readable/README.md

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+# is-cwebp-readable
+
+[![NPM version](https://img.shields.io/npm/v/is-cwebp-readable.svg)](https://www.npmjs.com/package/is-cwebp-readable)
+[![Build Status](https://travis-ci.org/shinnn/is-cwebp-readable.svg?branch=master)](https://travis-ci.org/shinnn/is-cwebp-readable)
+[![Build status](https://ci.appveyor.com/api/projects/status/lrfe3hgtupsg45l1?svg=true)](https://ci.appveyor.com/project/ShinnosukeWatanabe/is-cwebp-readable)
+[![Coverage Status](https://img.shields.io/coveralls/shinnn/is-cwebp-readable.svg)](https://coveralls.io/github/shinnn/is-cwebp-readable)
+[![Dependency Status](https://david-dm.org/shinnn/is-cwebp-readable.svg)](https://david-dm.org/shinnn/is-cwebp-readable)
+[![devDependency Status](https://david-dm.org/shinnn/is-cwebp-readable/dev-status.svg)](https://david-dm.org/shinnn/is-cwebp-readable#info=devDependencies)
+
+Check if a Buffer/Uint8Array is available for [cwebp](https://developers.google.com/speed/webp/docs/cwebp) image source
+
+```javascript
+const fs = require('fs');
+const isCwebpReadable = require('is-cwebp-readable');
+
+isCwebpReadable(fs.readFileSync('fixture.png')); //=> true
+isCwebpReadable(fs.readFileSync('fixture.bmp')); //=> false
+```
+
+## Installation
+
+[Use npm.](https://docs.npmjs.com/cli/install)
+
+```sh
+npm install is-cwebp-readable
+```
+
+## API
+
+```javascript
+const isCwebpReadable = require('is-cwebp-readable');
+```
+
+### isCwebpReadable(*buf*)
+
+*buf*: [`Buffer`](https://nodejs.org/api/buffer.html#buffer_class_buffer) or [`Uint8Array`](https://www.khronos.org/registry/typedarray/specs/latest/#TYPEDARRAYS)  
+Return: `Boolean`
+
+It returns `true` if the data is [PNG](https://wikipedia.org/wiki/Portable_Network_Graphics), [JPEG](https://wikipedia.org/wiki/JPEG), [TIFF](https://wikipedia.org/wiki/Tagged_Image_File_Format), or [WebP](https://wikipedia.org/wiki/WebP), otherwise `false`.
+
+## License
+
+[Creative Commons Zero v1.0 Universal](https://creativecommons.org/publicdomain/zero/1.0/deed)

build/node_modules/is-cwebp-readable/index.js

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+'use strict';
+
+const fileType = require('file-type');
+
+module.exports = function isCwebpReadable(buf) {
+  const type = fileType(buf);
+
+  if (!type) {
+    return false;
+  }
+
+  const ext = type.ext;
+
+  return ext === 'png' || ext === 'jpg' || ext === 'tif' || ext === 'webp';
+};

build/node_modules/is-cwebp-readable/package.json

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+{
+  "_from": "is-cwebp-readable@^2.0.1",
+  "_id": "is-cwebp-readable@2.0.1",
+  "_inBundle": false,
+  "_integrity": "sha1-r7k7DAq9CiUQEBauM66ort+SbSY=",
+  "_location": "/is-cwebp-readable",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "is-cwebp-readable@^2.0.1",
+    "name": "is-cwebp-readable",
+    "escapedName": "is-cwebp-readable",
+    "rawSpec": "^2.0.1",
+    "saveSpec": null,
+    "fetchSpec": "^2.0.1"
+  },
+  "_requiredBy": [
+    "/imagemin-webp"
+  ],
+  "_resolved": "https://registry.npmjs.org/is-cwebp-readable/-/is-cwebp-readable-2.0.1.tgz",
+  "_shasum": "afb93b0c0abd0a25101016ae33aea8aedf926d26",
+  "_spec": "is-cwebp-readable@^2.0.1",
+  "_where": "/Users/asciidisco/Desktop/asciidisco.com/build/node_modules/imagemin-webp",
+  "author": {
+    "name": "Shinnosuke Watanabe",
+    "url": "https://github.com/shinnn"
+  },
+  "bugs": {
+    "url": "https://github.com/shinnn/is-cwebp-readable/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {
+    "file-type": "^4.3.0"
+  },
+  "deprecated": false,
+  "description": "Check if a Buffer/Uint8Array is available for cwebp image source",
+  "devDependencies": {
+    "@shinnn/eslint-config-node": "^3.0.0",
+    "eslint": "^3.19.0",
+    "istanbul": "^0.4.5",
+    "tap-spec": "^4.1.1",
+    "tape": "^4.6.3"
+  },
+  "eslintConfig": {
+    "extends": "@shinnn/node"
+  },
+  "files": [
+    "index.js"
+  ],
+  "homepage": "https://github.com/shinnn/is-cwebp-readable#readme",
+  "keywords": [
+    "buffer",
+    "uint8array",
+    "type",
+    "file",
+    "detect",
+    "image",
+    "jpg",
+    "jpeg",
+    "png",
+    "tif",
+    "tiff",
+    "webp",
+    "cwebp"
+  ],
+  "license": "CC0-1.0",
+  "name": "is-cwebp-readable",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/shinnn/is-cwebp-readable.git"
+  },
+  "scripts": {
+    "bench": "node -p \"require('chalk').yellow('NOTE: Smaller is better.\\n')\" && node benchmark/array-index-of.js && node benchmark/array-includes.js && node benchmark/keys.js && node benchmark/logical-or.js && node benchmark/regexp-test.js && node benchmark/set.js && node -p \"''\"",
+    "coverage": "istanbul cover test.js",
+    "pretest": "eslint --fix --format=codeframe benchmark index.js test.js",
+    "test": "node --throw-deprecation --track-heap-objects test.js | tap-spec"
+  },
+  "version": "2.0.1"
+}