Function isArray

test/fixtures/snapshot/typescript.js:1821–1823

* Tests whether a value is an array.

(value)

     * Tests whether a value is an array.
     */
    function isArray(value) {
        return Array.isArray ? Array.isArray(value) : value instanceof Array;
    }
    ts.isArray = isArray;
    function toArray(value) {
        return isArray(value) ? value : [value];