shelving/schema/DictionarySchema.js

Toolkit for using data in JavaScript.

import { isDictionary } from "../util/dictionary.js";
import { validateDictionary } from "../util/validate.js";
import { Schema } from "./Schema.js";
/** Validate a dictionary object (whose props are all the same with string keys). */
export class DictionarySchema extends Schema {
    items;
    min;
    max;
    constructor({ items, one = items.one, many = items.many, placeholder = `No ${many}`, min = 0, max = Number.POSITIVE_INFINITY, title = "Items", value = {}, ...options }) {
        super({ one, many, title, placeholder, value, ...options });
        this.items = items;
        this.min = min;
        this.max = max;
    }
    validate(unsafeValue = this.value) {
        if (!isDictionary(unsafeValue))
            throw "Must be object";
        const validDictionary = validateDictionary(unsafeValue, this.items);
        const length = Object.keys(validDictionary).length;
        if (length < this.min)
            throw length ? `Minimum ${this.min} ${this.many}` : "Required";
        if (length > this.max)
            throw `Maximum ${this.max} ${this.many}`;
        return validDictionary;
    }
}
/** Valid dictionary object with specifed items. */
export const DICTIONARY = (items) => new DictionarySchema({ items });