Added declarations for 'is-path-cwd'. (#13172)

is-path-cwd/index.d.ts

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+// Type definitions for is-path-cwd 1.0
+// Project: https://github.com/sindresorhus/is-path-cwd
+// Definitions by: Daniel Rosenwasser <https://github.com/DanielRosenwasser>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+declare function isPathCwd(path: string): boolean;
+export = isPathCwd;

is-path-cwd/is-path-cwd-tests.ts

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+import isPathCwd = require("is-path-cwd");
+
+isPathCwd("unicorn");

is-path-cwd/tsconfig.json

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+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "target": "es6",
+        "noImplicitAny": true,
+        "strictNullChecks": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "is-path-cwd-tests.ts"
+    ]
+}

is-path-cwd/tslint.json

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+{ "extends": "../tslint.json" }