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/**
* @fileoverview Rule to flag non-quoted property names in object literals.
* @author Mathias Bynens <http://mathiasbynens.be/>
* @copyright 2014 Brandon Mills. All rights reserved.
*/
"use strict";
//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------
var espree = require("espree");
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
module.exports = function(context) {
var MODE = context.options[0];
/**
* Ensures that a property's key is quoted only when necessary
* @param {ASTNode} node Property AST node
* @returns {void}
*/
function asNeeded(node) {
var key = node.key,
tokens;
if (key.type === "Literal" && typeof key.value === "string") {
try {
tokens = espree.tokenize(key.value);
} catch (e) {
return;
}
if (tokens.length === 1 &&
(["Identifier", "Null", "Boolean"].indexOf(tokens[0].type) >= 0 ||
(tokens[0].type === "Numeric" && "" + +tokens[0].value === tokens[0].value))
) {
context.report(node, "Unnecessarily quoted property `{{value}}` found.", key);
}
}
}
/**
* Ensures that a property's key is quoted
* @param {ASTNode} node Property AST node
* @returns {void}
*/
function always(node) {
var key = node.key;
if (!node.method && !(key.type === "Literal" && typeof key.value === "string")) {
context.report(node, "Unquoted property `{{key}}` found.", {
key: key.name || key.value
});
}
}
return {
"Property": MODE === "as-needed" ? asNeeded : always
};
};
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