[is-svg] introduce typings (#18265)

types/is-svg/index.d.ts

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+// Type definitions for is-svg 2.1
+// Project: https://github.com/sindresorhus/is-svg#readme
+// Definitions by: BendingBender <https://github.com/BendingBender>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+export = isSvg;
+
+declare function isSvg(input: string): boolean;

types/is-svg/is-svg-tests.ts

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+import isSvg = require('is-svg');
+
+const result: boolean = isSvg('<svg xmlns="http://www.w3.org/2000/svg"><path fill="#00CD9F"/></svg>');

types/is-svg/tsconfig.json

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

types/is-svg/tslint.json

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