metal-soy-critic/lib/validate-ternary-elvis.js

A metal-soy code validation utility.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const soy_helpers_1 = require("./soy-helpers");
const util_1 = require("./util");
const chalk = require("chalk");
function formatMessage(node, name) {
    return `$${name} - Line ${node.mark.start.line}`;
}
function validateTernaryElvis(soyContext) {
    const references = [];
    soyContext.visit({
        Ternary(node) {
            if (soy_helpers_1.isFunctionCall(node.condition) && node.condition.name === 'isNonnull') {
                const firstArg = node.condition.body[0];
                if (soy_helpers_1.isReference(firstArg)) {
                    const referenceName = firstArg.name;
                    if (soy_helpers_1.isReference(node.left) && node.left.name === referenceName) {
                        references.push(formatMessage(node, referenceName));
                    }
                }
            }
        }
    });
    if (!references.length) {
        return util_1.toResult(true);
    }
    return util_1.toResult(false, `Use the ${chalk.yellow('Elvis (?:)')} operator instead of a ternary for ${chalk.yellow('default')} values:\n\n` +
        util_1.joinErrors(references));
}
exports.default = validateTernaryElvis;