Decompile .jsc Files by Version

V8's bytecode format changes with every major engine version, so each Node.js and Electron release writes a different .jsc layout. Pick your runtime version below for version-specific decompilation notes, the bytecode magic header, and answers to common questions. JSC Decompiler auto-detects the version from the file header, so you never have to guess.

Node.js versions

Node.js 8

V8 6.x

Node.js 10

V8 6.x

Node.js 12

V8 7.x

Node.js 14

V8 8.x

Node.js 16

V8 9.x

Node.js 18

V8 10.x

Node.js 20

V8 11.3

Node.js 21

V8 11.8

Node.js 22

V8 12.4

Node.js 23

V8 12.9

Node.js 24

V8 13.6

Node.js 25

V8 14.1

Electron versions

Electron 17

V8 9.x

Electron 18

V8 10.0

Electron 19

V8 10.2

Electron 20

V8 10.x

Electron 21

V8 10.x

Electron 22

V8 10.8

Electron 23

V8 11.x

Electron 24

V8 11.x

Electron 25

V8 11.2

Electron 26

V8 11.4

Electron 27

V8 11.8

Electron 28

V8 12.0

Electron 29

V8 12.2

Electron 30

V8 12.4

Electron 31

V8 12.6

Electron 32

V8 12.8

Electron 33

V8 13.0

Electron 34

V8 13.2

Electron 35

V8 13.4

Electron 36

V8 13.6

Electron 37

V8 13.8

Electron 38

V8 14.0

Not sure which version produced your file? Analyze the .jsc header to identify the exact V8 build.