confinode/lib/ConfigDescription/BooleanDescription/BooleanDescription.js

Node application configuration reader

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const ConfinodeError_1 = require("../../ConfinodeError");
const messages_1 = require("../../messages");
const ConfigDescription_1 = require("../ConfigDescription");
/**
 * Description of a boolean item. Boolean parser tries also to convert some numbers and strings.
 */
class BooleanDescription extends ConfigDescription_1.LeafItemDescription {
    /**
     * Create the description of a boolean item.
     *
     * @param defaultValue - The value to use for inexistent value.
     */
    constructor(defaultValue) {
        super(defaultValue);
    }
    parseValue(value, fileName, keyName) {
        if (typeof value === 'boolean') {
            return value;
        }
        else if (typeof value === 'number') {
            if (value === 0) {
                return false;
            }
            else if (value === 1) {
                return true;
            }
        }
        else if (typeof value === 'string') {
            if (/^(?:f(?:alse)?|n(?:o)?|0)$/i.test(value)) {
                return false;
            }
            else if (/^(?:t(?:rue)?|y(?:es)?|1)$/i.test(value)) {
                return true;
            }
        }
        throw new ConfinodeError_1.default('expected', keyName, fileName, new messages_1.Message(messages_1.Level.Error, 'expectedBoolean'));
    }
}
exports.default = BooleanDescription;
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