Function isArrayBuffer

packages/main/test/pages/diffable-html.js:1851–1855

(obj)

    // ArrayBuffers from another context (i.e. an iframe) do not pass the `instanceof` check
    // but they should be treated as valid. See: https://github.com/feross/buffer/issues/166
    function isArrayBuffer (obj) {
      return obj instanceof ArrayBuffer ||
        (obj != null && obj.constructor != null && obj.constructor.name === 'ArrayBuffer' &&
          typeof obj.byteLength === 'number')
    }

    function numberIsNaN (obj) {
      return obj !== obj // eslint-disable-line no-self-compare