Function removeNull

src/GraphQL.ts:90–106

(builder: TypeBuilder, tref: TypeRef)

}

function removeNull(builder: TypeBuilder, tref: TypeRef): TypeRef {
    const t = tref.deref();
    if (!(t instanceof UnionType)) {
        return tref;
    }
    const nonNulls = removeNullFromUnion(t)[1];
    const first = nonNulls.first();
    if (first) {
        if (nonNulls.size === 1) return first.typeRef;
        return builder.getUnionType(
            { names: t.names, alternatives: t.alternativeNames },
            t.areNamesInferred,
            nonNulls.map(nn => nn.typeRef)
        );
    }
    return panic("Trying to remove null results in empty union.");
}

function makeScalar(builder: TypeBuilder, ft: GQLType): TypeRef {
    switch (ft.name) {