Recent versions of JavaScript added support for import attributes. These were previously marked with assert and have since been replaced with with.
import descriptor from './package.json' with { type: 'json' }
Node.js cannot import JSON format in particular without the type attribute. Version 18 uses the assert keyword. When the dust settles on this syntax, for code to be portable between Node.js and Endo bundles, we will need to recognize import attributes and thread import attributes through the compartment import hooks.
Description of the Design
TBD
Security Considerations
NA
Scaling Considerations
NA
Test Plan
TBD
Compatibility Considerations
Very little JavaScript takes advantage of import attributes, but we expect the body of ESM in the wild to grow rapidly. Import attributes are also likely the beachhead for WASM integration.
Currently, Endo can import JSON without import attributes, but this creates a portability hazard since such programs are not mutually compatible with Node.js.
What is the Problem Being Solved?
Recent versions of JavaScript added support for import attributes. These were previously marked with
assertand have since been replaced withwith.Node.js cannot import JSON format in particular without the type attribute. Version 18 uses the
assertkeyword. When the dust settles on this syntax, for code to be portable between Node.js and Endo bundles, we will need to recognize import attributes and thread import attributes through the compartment import hooks.Description of the Design
TBD
Security Considerations
NA
Scaling Considerations
NA
Test Plan
TBD
Compatibility Considerations
Very little JavaScript takes advantage of import attributes, but we expect the body of ESM in the wild to grow rapidly. Import attributes are also likely the beachhead for WASM integration.
Currently, Endo can import JSON without import attributes, but this creates a portability hazard since such programs are not mutually compatible with Node.js.
Upgrade Considerations
NA