Adds type definitions for the npm module "is-function"

types/is-function/index.d.ts

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+// Type definitions for is-function 1.0
+// Project: https://github.com/grncdr/js-is-function
+// Definitions by: Evangelos Zotos <https://github.com/evangeloszotos>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+declare function isFunction(fn: any): boolean;
+declare namespace isFunction {}
+export = isFunction;

types/is-function/is-function-tests.ts

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+import * as isFunction from "is-function";
+
+const a: boolean = isFunction("string");
+const b: boolean = isFunction(true);
+const c: boolean = isFunction((a: number) => a * a);
+const d: boolean = isFunction({ type: "number" });
+const e: boolean = isFunction(() => {
+    return "I am anounymous!";
+});

types/is-function/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", "is-function-tests.ts"]
+}

types/is-function/tslint.json

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