const WAV_HEADER_SIZE = 44; Cypress.Commands.add("getFramesFromFile", (path: string) => { cy.fixture(path, 'base64').then(Cypress.Blob.base64StringToBlob).then(async blob => { const data = new Int16Array(await blob.arrayBuffer()); return data.slice(WAV_HEADER_SIZE / Int16Array.BYTES_PER_ELEMENT); }); });