kotlin-node/karakum/src/jsMain/kotlin/node/karakum/nameResolvers/resolveInterfacePropertyNullableUnionName.kt [21:42]:
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            ?.let {
                if (isParenthesizedTypeNode(it)) {
                    typeScriptService.getParent(it)
                } else it
            }
    )
    ensure(isUnionTypeNode(union))
    ensure(union.types.asArray().size == 2)
    ensure(union.types.asArray()[1].kind == SyntaxKind.UndefinedKeyword)

    val property = ensureNotNull(typeScriptService.getParent(union))
    ensure(isPropertySignature(property))

    val propertyNameNode = property.name
    ensure(isIdentifier(propertyNameNode))
    val propertyName = propertyNameNode.text

    val interfaceNode = ensureNotNull(typeScriptService.getParent(property))
    ensure(isInterfaceDeclaration(interfaceNode))
    val parentName = interfaceNode.name.text

    "${parentName.replaceFirstChar { it.titlecase() }}${propertyName.replaceFirstChar { it.titlecase() }}"
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kotlin-node/karakum/src/jsMain/kotlin/node/karakum/nameResolvers/resolveInterfacePropertyNullableUnionNullableUnionName.kt [33:54]:
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            ?.let {
                if (isParenthesizedTypeNode(it)) {
                    typeScriptService.getParent(it)
                } else it
            }
    )
    ensure(isUnionTypeNode(union))
    ensure(union.types.asArray().size == 2)
    ensure(union.types.asArray()[1].kind == SyntaxKind.UndefinedKeyword)

    val property = ensureNotNull(typeScriptService.getParent(union))
    ensure(isPropertySignature(property))

    val propertyNameNode = property.name
    ensure(isIdentifier(propertyNameNode))
    val propertyName = propertyNameNode.text

    val interfaceNode = ensureNotNull(typeScriptService.getParent(property))
    ensure(isInterfaceDeclaration(interfaceNode))
    val parentName = interfaceNode.name.text

    "${parentName.replaceFirstChar { it.titlecase() }}${propertyName.replaceFirstChar { it.titlecase() }}"
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