[pixelmatch] new package

types/pixelmatch/index.d.ts

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+// Type definitions for pixelmatch 4.0
+// Project: https://github.com/mapbox/pixelmatch#readme
+// Definitions by: Oleg Repin <https://github.com/iamolegga>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+/// <reference types="node" />
+
+declare function Pixelmatch(
+  /** Image data of the first image to compare. Note: image dimensions must be equal. */
+  img1: Buffer | Uint8Array,
+  /** Image data of the second image to compare. Note: image dimensions must be equal. */
+  img2: Buffer | Uint8Array,
+  /** Image data to write the diff to, or null if don't need a diff image. */
+  output: Buffer | Uint8Array | null,
+  /** Width of the images. Note that all three images need to have the same dimensions. */
+  width: number,
+  /** Height of the images. Note that all three images need to have the same dimensions. */
+  height: number,
+  /** Options. */
+  options: Options | undefined
+): number;
+
+interface Options {
+  /** Matching threshold, ranges from 0 to 1. Smaller values make the comparison more sensitive. 0.1 by default. */
+  readonly threshold?: number;
+  /** If true, disables detecting and ignoring anti-aliased pixels. false by default. */
+  readonly includeAA?: boolean;
+}
+
+export = Pixelmatch;

types/pixelmatch/pixelmatch-tests.ts

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+/**
+ * This test code taken from pixelmatch example usage.
+ * https://github.com/mapbox/pixelmatch#example-usage
+ */
+
+import * as fs from 'fs';
+import pixelmatch = require('pixelmatch');
+import { PNG } from 'pngjs';
+
+const img1 = fs.createReadStream('img1.png')
+  .pipe(new PNG())
+  .on('parsed', doneReading);
+
+const img2 = fs.createReadStream('img2.png')
+  .pipe(new PNG())
+  .on('parsed', doneReading);
+
+let filesRead = 0;
+
+function doneReading() {
+    if (++filesRead < 2) return;
+    const diff = new PNG({width: img1.width, height: img1.height});
+
+    pixelmatch(img1.data, img2.data, diff.data, img1.width, img1.height, {threshold: 0.1});
+
+    diff.pack().pipe(fs.createWriteStream('diff.png'));
+}

types/pixelmatch/tsconfig.json

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+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "pixelmatch-tests.ts"
+    ]
+}

types/pixelmatch/tslint.json

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+{ "extends": "dtslint/dt.json" }