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.