koa-req-validation/dist/lib/ValidationResult.js

A request validation middleware for Koa.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
/**
 * Validation result set.
 */
class ValidationResult {
    constructor(parameter = [], 
    // tslint:disable-next-line: max-line-length
    finalValue, results) {
        this.parameters = Array.isArray(parameter) ? parameter : [parameter];
        this.finalValues = Array.isArray(finalValue)
            ? finalValue
            : this.parameters.length
                ? [finalValue]
                : [];
        if (this.parameters.length !== this.finalValues.length) {
            throw new Error(`Invalid ValidationResult state: parameters (${this.parameters.length})` +
                ` and finalValues (${this.finalValues.length}) do not match`);
        }
        if (results) {
            if (!Array.isArray(results)) {
                throw new TypeError(`Parameter for ValidationResult constructor must be an` +
                    ` array but received ${results}`);
            }
            this.results = results;
        }
        else {
            this.results = [];
        }
    }
    /**
     * Merge multiple validation error results into a single one.
     *
     * @param results An array of validation error results
     */
    static fromResults(results) {
        const parameters = [];
        const finalValues = [];
        const errors = [];
        for (const result of results) {
            parameters.push(...result.parameters);
            finalValues.push(...result.finalValues);
            errors.push(...result.array());
        }
        return new ValidationResult(parameters, finalValues, errors);
    }
    /**
     * See if validation result has any validation errors.
     */
    hasErrors() {
        return this.results.length > 0;
    }
    /**
     * Reuturn the validation results as an array.
     */
    array() {
        return [...this.results];
    }
    /**
     * Return the validation results as mapped validation results.
     */
    mapped() {
        const validation = {};
        for (const result of this.results) {
            validation[result.param] = result;
        }
        return validation;
    }
    /**
     * Return final values that have been stored within this validation result. This can
     * be used for retrieving all values that have passed validations and been sanitized.
     */
    passedData() {
        const results = {};
        for (let i = 0; i < this.parameters.length; i++) {
            if (typeof this.finalValues[i] !== "undefined") {
                results[this.parameters[i]] = this.finalValues[i];
            }
        }
        return this.deepen(results);
    }
    /**
     * Deepen a dot-notated nested object into a real nested object.
     *
     * @param obj Object with dot-notated nested properties
     *
     * ```typescript
     * const dotNotated = { "nested.prop": "value" };
     * const deepened = this.deepen(dotNotated);
     * console.log(deepened); // { 'nested': { 'prop': 'value' }}
     * ```
     */
    deepen(obj) {
        // eslint-disable-next-line @typescript-eslint/no-explicit-any
        const output = {};
        for (const key in obj) {
            let t = output;
            const parts = key.split(".");
            const k = parts.pop();
            while (parts.length) {
                const part = parts.shift();
                t = t[part] = t[part] || {};
            }
            t[k] = obj[key];
        }
        return output;
    }
}
exports.default = ValidationResult;
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