@sinclair/typebox
Version:
Json Schema Type Builder with Static Type Resolution for TypeScript
40 lines (38 loc) • 1.49 kB
JavaScript
Object.defineProperty(exports, "__esModule", { value: true });
exports.UnionEvaluated = UnionEvaluated;
const type_1 = require("../create/type");
const index_1 = require("../symbols/index");
const index_2 = require("../discard/index");
const index_3 = require("../never/index");
const index_4 = require("../optional/index");
const union_create_1 = require("./union-create");
// ------------------------------------------------------------------
// TypeGuard
// ------------------------------------------------------------------
const kind_1 = require("../guard/kind");
// prettier-ignore
function IsUnionOptional(T) {
return T.some(L => (0, kind_1.IsOptional)(L));
}
// prettier-ignore
function RemoveOptionalFromRest(T) {
return T.map(L => (0, kind_1.IsOptional)(L) ? RemoveOptionalFromType(L) : L);
}
// prettier-ignore
function RemoveOptionalFromType(T) {
return ((0, index_2.Discard)(T, [index_1.OptionalKind]));
}
// prettier-ignore
function ResolveUnion(T, options) {
return (IsUnionOptional(T)
? (0, index_4.Optional)((0, union_create_1.UnionCreate)(RemoveOptionalFromRest(T), options))
: (0, union_create_1.UnionCreate)(RemoveOptionalFromRest(T), options));
}
/** `[Json]` Creates an evaluated Union type */
function UnionEvaluated(T, options) {
// prettier-ignore
return (T.length === 0 ? (0, index_3.Never)(options) :
T.length === 1 ? (0, type_1.CreateType)(T[0], options) :
ResolveUnion(T, options));
}
;