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Files

Jesse Wilson f050d1be6b Flip the endianness of the function flags (#1616 )

This value was mostly pass-through: we read it
and wrote it back, without interpretting it, so
it was easy for this bug to sneak through.

The one catch we didn't handle is the debug
flag is always true in practice, but with
ES2015 we now see the incorrect flag triggering
incorrect behavior.

This was annoying to isolate.

Co-authored-by: Jesse Wilson <jwilson@squareup.com>

2025-07-15 14:32:17 -04:00

src

Flip the endianness of the function flags (#1616 )

2025-07-15 14:32:17 -04:00

build.gradle.kts

Fix opting into EngineApi and expect-actual-classes. (#1226 )

2024-01-16 11:23:24 -08:00

README.md

Zipline-bytecode: read and write encoded QuickJS objects. (#363 )

2021-11-15 11:13:20 -05:00

README.md

Zipline Bytecode

This module can read and write the QuickJS objects produced with JS_WriteObject(). This is the same encoding used by QuickJs.compile().

Limitations

The QuickJS serialized object format is undocumented and subject to change. The structure of the serialized data implicitly depends on build flags (such as CONFIG_ATOMICS and CONFIG_BIGNUM).

This module supports the exact QuickJS version that builds with this project.

Updating QuickJS

Build with DUMP_READ_OBJECT to see a human-readable interpretation of the encoded data. The following features are most likely to get out of sync:

Atoms are built-in well-known strings. Get the list by defining DUMP_ATOMS, which is a subset of the lines in quickjs-atom.h. Keep this in sync with AtomSet.BUILT_IN_ATOMS.
Flags in JsFunctionBytecode, JsVarDef, and JsClosureVar must be kept in sync.