Function extensionFromPath

test/fixtures/snapshot/typescript.js:20915–20918

* Gets the extension from a path. * Path must have a valid extension.

(path)

     * Path must have a valid extension.
     */
    function extensionFromPath(path) {
        var ext = tryGetExtensionFromPath(path);
        return ext !== undefined ? ext : ts.Debug.fail("File ".concat(path, " has unknown extension."));
    }
    ts.extensionFromPath = extensionFromPath;
    function isAnySupportedFileExtension(path) {
        return tryGetExtensionFromPath(path) !== undefined;