js-slang/dist/parser/source/rules/noDeclareMutable.js

Javascript-based implementations of Source, written in Typescript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.NoDeclareMutableError = void 0;
const astring_1 = require("astring");
const errors_1 = require("../../errors");
const types_1 = require("../../../types");
const helpers_1 = require("../../../utils/ast/helpers");
const mutableDeclarators = ['let', 'var'];
class NoDeclareMutableError extends errors_1.RuleError {
    explain() {
        return `Mutable variable declaration using keyword '${this.node.kind}' is not allowed.`;
    }
    elaborate() {
        const { id: { name }, init } = (0, helpers_1.getSourceVariableDeclaration)(this.node);
        const value = (0, astring_1.generate)(init);
        return `Use keyword "const" instead, to declare a constant:\n\n\tconst ${name} = ${value};`;
    }
}
exports.NoDeclareMutableError = NoDeclareMutableError;
const noDeclareMutable = {
    name: 'no-declare-mutable',
    disableFromChapter: types_1.Chapter.SOURCE_3,
    checkers: {
        VariableDeclaration(node) {
            if (mutableDeclarators.includes(node.kind)) {
                return [new NoDeclareMutableError(node)];
            }
            else {
                return [];
            }
        }
    }
};
exports.default = noDeclareMutable;
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