[srcset] Add types

types/srcset/index.d.ts

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+// Type definitions for srcset 1.0
+// Project: https://github.com/sindresorhus/srcset#readme
+// Definitions by: BendingBender <https://github.com/BendingBender>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+/**
+ * Parse the HTML `<img>`
+ * [srcset](http://mobile.smashingmagazine.com/2013/08/21/webkit-implements-srcset-and-why-its-a-good-thing/) attribute.
+ *
+ * @param srcset An srcset string.
+ */
+export function parse(srcset: string): SrcSetDefinition[];
+
+/**
+ * Stringify a list of `SrcSetDefinition`s.
+ *
+ * @param srcSetDefinitions An array of `SrcSetDefinition` object.
+ * @returns A srcset string.
+ */
+export function stringify(srcSetDefinitions: SrcSetDefinition[]): string;
+
+export interface SrcSetDefinition {
+    url: string;
+    width?: number;
+    height?: number;
+    density?: number;
+}

types/srcset/srcset-tests.ts

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+import srcset = require('srcset');
+
+const parsed = srcset.parse('banner-HD.jpg 2x, banner-phone.jpg 100w');
+parsed; // $ExpectType SrcSetDefinition[]
+
+parsed.push({ url: 'banner-phone-HD.jpg', width: 100, density: 2 });
+
+srcset.stringify(parsed); // $ExpectType string

types/srcset/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",
+        "srcset-tests.ts"
+    ]
+}

types/srcset/tslint.json

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