{"record":{"id":"YT-MZYDzfxyxic","slug":"youtube-MZYDzfxyxic","kind":"film","title":"BLOCK SCOPING | CONST, VAR, LET - ByteCode | How the JavaScript REALLY engine works | Advanced JS","dek":"A film by Chris Hay.","abstract":"“BLOCK SCOPING | CONST, VAR, LET - ByteCode | How the JavaScript REALLY engine works | Advanced JS” is a video on Chris Hay’s YouTube channel. Its full transcript has not yet been indexed.","created":"2026-09-05","publication":"catalogued","version":"1.0","authors":["Chris Hay"],"body":[{"kind":"film","media":"youtube-MZYDzfxyxic"}],"concepts":[],"related":[],"media":["youtube-MZYDzfxyxic"],"sourceMetadata":{"retrievedAt":"2026-09-05T18:58:44+00:00","sourceHash":"d281e4e1a138cab89c0854f166fed2229b511db4ff3febdc2eb35100e2307c11","transcript":"missing","views":1700,"viewsApproximate":true},"collection":"YouTube","originalUrl":"https://www.youtube.com/watch?v=MZYDzfxyxic","youtubeId":"MZYDzfxyxic","sources":[{"title":"Original YouTube film","url":"https://www.youtube.com/watch?v=MZYDzfxyxic","note":"Metadata retrieved 2026-09-05T18:58:44+00:00. Topic links are inferred from title and description; they are discovery links, not validated claims."}]}}