| 1 | import type { Differ } from "../../Differ.ts" |
| 2 | import * as JsonPatch from "../../JsonPatch.ts" |
| 3 | import type * as Schema from "../../Schema.ts" |
| 4 | import * as SchemaParser from "../../SchemaParser.ts" |
| 5 | import * as InternalToCodec from "./toCodec.ts" |
| 6 | |
| 7 | /** @internal */ |
| 8 | export function toDifferJsonPatch<T>( |
| 9 | schema: Schema.ConstraintCodec<T, unknown> |
| 10 | ): Differ<T, JsonPatch.JsonPatch> { |
| 11 | const serializer = InternalToCodec.toCodecJson(schema) |
| 12 | const get = SchemaParser.encodeSync(serializer) |
| 13 | const set = SchemaParser.decodeSync(serializer) |
| 14 | return { |
| 15 | empty: [], |
| 16 | diff: (oldValue, newValue) => JsonPatch.get(get(oldValue), get(newValue)), |
| 17 | combine: (first, second) => [...first, ...second], |
| 18 | patch: (oldValue, patch) => { |
| 19 | const value = get(oldValue) |
| 20 | const patched = JsonPatch.apply(patch, value) |
| 21 | return Object.is(patched, value) ? oldValue : set(patched) |
| 22 | } |
| 23 | } |
| 24 | } |