Function getOrCreateGoEnum

scripts/codegen/go.ts:725–774

* Get or create a Go enum type, deduplicating by type name (not by value set). * Two enums with the same values but different names are distinct types.

(
    enumName: string,
    values: string[],
    ctx: GoCodegenCtx,
    description?: string,
    enumValueDescriptions?: EnumValueDescriptions,
    deprecated?: boolean,
    experimental?: boolean
)

 * Two enums with the same values but different names are distinct types.
 */
function getOrCreateGoEnum(
    enumName: string,
    values: string[],
    ctx: GoCodegenCtx,
    description?: string,
    enumValueDescriptions?: EnumValueDescriptions,
    deprecated?: boolean,
    experimental?: boolean
): string {
    const existing = ctx.enumsByName.get(enumName);
    if (existing) return existing;

    const lines: string[] = [];
    if (description) {
        pushGoCommentForContext(lines, description, ctx);
    }
    if (experimental) {
        pushGoExperimentalTypeComment(lines, enumName, ctx);
    }
    if (deprecated) {
        pushGoCommentForContext(lines, `Deprecated: ${enumName} is deprecated and will be removed in a future version.`, ctx);
    }
    lines.push(`type ${enumName} string`);
    lines.push(``);
    lines.push(`const (`);
    const consts = values
        .map((value) => ({ value, constSuffix: goEnumConstSuffix(value) }))
        .sort((left, right) => `${enumName}${left.constSuffix}`.localeCompare(`${enumName}${right.constSuffix}`));
    const usedConstNames = new Map<string, string>();
    for (const { value, constSuffix } of consts) {
        const constName = `${enumName}${constSuffix}`;
        const existingValue = usedConstNames.get(constName);
        if (existingValue !== undefined) {
            throw new Error(
                `Generated Go enum const identifier "${constName}" is not unique for values "${existingValue}" and "${value}". Add an explicit naming rule instead of stabilizing an arbitrary public const name.`
            );
        }
        usedConstNames.set(constName, value);
        const valueDescription = enumValueDescriptions?.[value];
        if (valueDescription) {
            pushGoCommentForContext(lines, valueDescription, ctx, "\t");
        }
        lines.push(`\t${constName} ${enumName} = "${value}"`);
    }
    lines.push(`)`);

    ctx.enumsByName.set(enumName, enumName);
    ctx.enums.push(lines.join("\n"));
    return enumName;
}

function goEnumConstSuffix(value: string): string {
    const suffix = splitGoIdentifierWords(value)