function __cfHardenFn(fn: Function) {
    Object.freeze(fn);
    const prototype = fn.prototype;
    if (prototype && typeof prototype === "object") {
        Object.freeze(prototype);
    }
    return fn;
}
import { __cfHelpers } from "commonfabric";
import { Default, equals, handler, Writable } from "commonfabric";
const define = undefined;
const runtimeDeps = undefined;
const __cfAmdHooks = undefined;
type MentionablePiece = {
    title?: string;
    isHidden?: boolean;
    mentioned?: MentionablePiece[];
    backlinks?: MentionablePiece[];
};
// CT-1639 Gap B: the array carries a `Default<[]>` union member. The items must
// still shrink to `{ type: "unknown", asCell: ["comparable"] }` — identical to
// the non-Default `identity-only-handler-payload` fixture — so that the
// equals()/findIndex removal idiom keeps matching live links. Before the fix the
// expanded `Default<[]>` union dropped the items `comparable`, silently breaking
// equals()-based removal.
const removePiece = handler({
    type: "object",
    properties: {
        piece: {
            type: "unknown",
            asCell: ["comparable"]
        }
    },
    required: ["piece"]
} as const satisfies __cfHelpers.JSONSchema, {
    type: "object",
    properties: {
        allPieces: {
            type: "array",
            items: {
                type: "unknown",
                asCell: ["comparable"]
            },
            "default": [],
            asCell: ["cell"]
        }
    },
    required: ["allPieces"]
} as const satisfies __cfHelpers.JSONSchema, ({ piece }, { allPieces }) => {
    const current = allPieces.get();
    const idx = current.findIndex((c) => equals(c, piece));
    if (idx >= 0)
        allPieces.set(current.toSpliced(idx, 1));
});
// FIXTURE: identity-only-handler-default-array
// Verifies: a `Writable<T[] | Default<[]>>` array used only for identity removal
// keeps `asCell: ["comparable"]` on its items (with `default: []` from the
// Default<[]> collapse), matching the non-Default identity-only fixture. (CT-1639)
export { removePiece };
// @ts-ignore: Internals
function h(...args: any[]) { return __cfHelpers.h.apply(null, args); }
__cfHardenFn(h);