refactoring

[larshp]

No description provided.

[Copilot]

Pull request overview

This PR refactors the mini JavaScript engine by replacing magic-number value-type tags with named constants and extracting several built-in behaviors (globals + array methods) into dedicated classes to simplify the core interpreter logic.

Changes:

• Introduces zif_mjs=>c_type_* constants for runtime value typing (undefined/number/string/bool/function/null/object/array/regex/getter).
• Extracts built-ins into zcl_mjs_builtins (Boolean/RegExp/JSON.stringify/console.log/Object.keys/Object.defineProperty/Date.now/Set.has/new Set).
• Extracts array method handling into zcl_mjs_arr_methods and centralizes ToPrimitive coercion with zcl_mjs=>to_primitive.

Reviewed changes

Copilot reviewed 11 out of 12 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/zif_mjs.intf.abap	Adds named constants for runtime value-type tags.
src/zcl_mjs.clas.abap	Refactors interpreter to use constants; extracts built-ins/array methods; adds to_primitive; makes call_function public for callbacks.
src/zcl_mjs_val.clas.abap	Updates value boxing/conversion helpers to use c_type_* constants.
src/zcl_mjs_env.clas.abap	Uses c_type_undefined for missing bindings.
src/zcl_mjs_builtins.clas.xml	Adds class metadata for new built-ins helper class.
src/zcl_mjs_builtins.clas.abap	Implements extracted built-ins (Boolean/RegExp/JSON/console/Date/Object/Set helpers).
src/types/zcl_mjs_string.clas.abap	Replaces regex/array magic numbers with c_type_* constants.
src/types/zcl_mjs_json.clas.abap	Replaces magic numbers with c_type_* constants in JSON stringify.
src/types/zcl_mjs_arr_methods.clas.xml	Adds class metadata for new array-methods helper class.
src/types/zcl_mjs_arr_methods.clas.abap	Implements extracted array methods (push/map/find/filter/splice/sort).
package.json	Updates @abaplint/* dependency versions.
package-lock.json	Locks updated @abaplint/* dependency versions.

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