@ts-for-gir/lib/lib/validators/function-parameters.js

Typescript .d.ts generator from GIR for gjs

import { TypeIdentifier, NullableType } from "../gir.js";
import { GirVisitor } from "../visitor.js";
export class FunctionParametersVisitor extends GirVisitor {
    makeEnumParamsNullable(node) {
        return node.copy({
            parameters: node.parameters.map(param => {
                const type = param.type.deepUnwrap();
                if (type instanceof TypeIdentifier) {
                    // Get the namespace where this type should be defined
                    const ns = node.namespace.assertInstalledImport(type.namespace);
                    // Check if the type is an enum
                    const isEnumType = !!ns.getEnum(type.name);
                    // If it is, make the parameter nullable
                    if (isEnumType) {
                        return param.copy({
                            type: new NullableType(param.type)
                        });
                    }
                }
                return param;
            })
        });
    }
    visitFunction = (node) => {
        return this.makeEnumParamsNullable(node);
    };
    visitClassFunction = (node) => {
        return this.makeEnumParamsNullable(node);
    };
}
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