@sinclair/typebox
Version:
Json Schema Type Builder with Static Type Resolution for TypeScript
62 lines (61 loc) • 2.46 kB
JavaScript
import { CreateType } from '../create/type.mjs';
import { Computed } from '../computed/index.mjs';
import { Optional } from '../optional/index.mjs';
import { Object } from '../object/index.mjs';
import { Intersect } from '../intersect/index.mjs';
import { Union } from '../union/index.mjs';
import { Ref } from '../ref/index.mjs';
import { Discard } from '../discard/index.mjs';
import { TransformKind } from '../symbols/index.mjs';
import { PartialFromMappedResult } from './partial-from-mapped-result.mjs';
// ------------------------------------------------------------------
// TypeGuard
// ------------------------------------------------------------------
import { IsMappedResult, IsIntersect, IsUnion, IsObject, IsRef, IsComputed } from '../guard/kind.mjs';
// prettier-ignore
function FromComputed(target, parameters) {
return Computed('Partial', [Computed(target, parameters)]);
}
// prettier-ignore
function FromRef($ref) {
return Computed('Partial', [Ref($ref)]);
}
// prettier-ignore
function FromProperties(properties) {
const partialProperties = {};
for (const K of globalThis.Object.getOwnPropertyNames(properties))
partialProperties[K] = Optional(properties[K]);
return partialProperties;
}
// prettier-ignore
function FromObject(T) {
const options = Discard(T, [TransformKind, '$id', 'required', 'properties']);
const properties = FromProperties(T['properties']);
return Object(properties, options);
}
// prettier-ignore
function FromRest(types) {
return types.map(type => PartialResolve(type));
}
// ------------------------------------------------------------------
// PartialResolve
// ------------------------------------------------------------------
// prettier-ignore
function PartialResolve(type) {
return (IsComputed(type) ? FromComputed(type.target, type.parameters) :
IsRef(type) ? FromRef(type.$ref) :
IsIntersect(type) ? Intersect(FromRest(type.allOf)) :
IsUnion(type) ? Union(FromRest(type.anyOf)) :
IsObject(type) ? FromObject(type) :
Object({}));
}
/** `[Json]` Constructs a type where all properties are optional */
export function Partial(type, options) {
if (IsMappedResult(type)) {
return PartialFromMappedResult(type, options);
}
else {
// special: mapping types require overridable options
return CreateType({ ...PartialResolve(type), ...options });
}
}