ow/dist/predicates/data-view.js

Function argument validation for humans

import { Predicate } from './predicate.js';
export class DataViewPredicate extends Predicate {
    /**
    @hidden
    */
    constructor(options) {
        super('DataView', options);
    }
    /**
    Test a DataView to have a specific byte length.

    @param byteLength - The byte length of the DataView.
    */
    byteLength(byteLength) {
        return this.addValidator({
            message: (value, label) => `Expected ${label} to have byte length of \`${byteLength}\`, got \`${value.byteLength}\``,
            validator: value => value.byteLength === byteLength,
        });
    }
    /**
    Test a DataView to have a minimum byte length.

    @param byteLength - The minimum byte length of the DataView.
    */
    minByteLength(byteLength) {
        return this.addValidator({
            message: (value, label) => `Expected ${label} to have a minimum byte length of \`${byteLength}\`, got \`${value.byteLength}\``,
            validator: value => value.byteLength >= byteLength,
            negatedMessage: (value, label) => `Expected ${label} to have a maximum byte length of \`${byteLength - 1}\`, got \`${value.byteLength}\``,
        });
    }
    /**
    Test a DataView to have a minimum byte length.

    @param length - The minimum byte length of the DataView.
    */
    maxByteLength(byteLength) {
        return this.addValidator({
            message: (value, label) => `Expected ${label} to have a maximum byte length of \`${byteLength}\`, got \`${value.byteLength}\``,
            validator: value => value.byteLength <= byteLength,
            negatedMessage: (value, label) => `Expected ${label} to have a minimum byte length of \`${byteLength + 1}\`, got \`${value.byteLength}\``,
        });
    }
}