ow/dist/predicates/boolean.js

Function argument validation for humans

import { Predicate } from './predicate.js';
export class BooleanPredicate extends Predicate {
    /**
    @hidden
    */
    constructor(options, validators) {
        super('boolean', options, validators);
    }
    /**
    Test a boolean to be true.
    */
    get true() {
        return this.addValidator({
            message: (value, label) => `Expected ${label} to be true, got ${value}`,
            validator: value => value,
        });
    }
    /**
    Test a boolean to be false.
    */
    get false() {
        return this.addValidator({
            message: (value, label) => `Expected ${label} to be false, got ${value}`,
            validator: value => !value,
        });
    }
}