json-joy/esm/json-crdt-extensions/peritext/slice/NestedType.js

Collection of libraries for building collaborative editing apps.

import { NestedTag } from './NestedTag';
import * as schema from './schema';
export class NestedType {
    slice;
    constructor(slice) {
        this.slice = slice;
    }
    /** Enforces slice type to be an "arr" of tags. */
    asArr() {
        const { slice } = this;
        const api = slice.typeApi();
        if (api && api.node.name() === 'arr')
            return api;
        let type;
        if (!api)
            type = [0];
        else {
            type = api.view();
            if (!Array.isArray(type))
                type = typeof type === 'number' || typeof type === 'string' ? [type] : [0];
        }
        slice.update({ type: schema.type(type) });
        return slice.typeApi();
    }
    /**
     * Nested tag API for nested block types.
     *
     * @param index The position of the tag in the type array. If not specified,
     *     returns the last tag (255). Maximum index is 255.
     * @returns Slice tag API for the given position.
     */
    tag(index = 255) {
        return new NestedTag(this, index);
    }
}
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