shelving/schema/BooleanSchema.js

Toolkit for using data in JavaScript.

import { Schema } from "./Schema.js";
const NEGATIVE = ["", "false", "0", "no", "n", "off"];
/** Define a valid boolean. */
export class BooleanSchema extends Schema {
    constructor({ value = false, required = false, ...options }) {
        super({ value, ...options });
        this.required = required;
    }
    validate(unsafeValue = this.value) {
        const value = typeof unsafeValue === "string" ? !NEGATIVE.includes(unsafeValue.toLowerCase().trim()) : !!unsafeValue;
        if (this.required && !value)
            throw "Required";
        return value;
    }
}
/** Valid boolean. */
export const BOOLEAN = new BooleanSchema({});