Function isEnumType

packages/transpiler/src/BuilderHelpers.ts:113–130

(type: ts.Type)

}

export function isEnumType(type: ts.Type) {
    // if for some reason this returns true...
    if (hasFlag(type, ts.TypeFlags.Enum)) {
        return true;
    }
    // it's not an enum type if it's an enum literal type
    if (hasFlag(type, ts.TypeFlags.EnumLiteral)) {
        return true;
    }
    // get the symbol and check if its value declaration is an enum declaration
    const symbol = type.getSymbol();
    if (!symbol) {
        return false;
    }
    const { valueDeclaration } = symbol;

    return valueDeclaration && valueDeclaration.kind === ts.SyntaxKind.EnumDeclaration;
}

export function wrapToNonNull(isNullableType: boolean, expr: ts.Expression, factory: ts.NodeFactory) {
    return isNullableType ? expr : factory.createNonNullExpression(expr);