src: fix slice of slice of file-backed Blob · nodejs/node@4c36d6c

const res1 = blob.slice(995, 1005);

strictEqual(await res1.text(), data.slice(995, 1005));

// Refs: https://github.com/nodejs/node/issues/53908

for (const res2 of [

blob.slice(995, 1005).slice(),

blob.slice(995).slice(0, 10),

blob.slice(0, 1005).slice(995),

]) {

strictEqual(await res2.text(), data.slice(995, 1005));

}

await unlink(testfile2);

})().then(common.mustCall());