node/tools/eslint/lib/rules/no-octal-escape.js
Rich Trott f44969a5ab tools: update ESLint to current version
We have been stalled on ESLint 3.8.0 for some time. Current ESLint is
3.13.0. We have been unable to upgrade because of more aggressive
reporting on some rules, including indentation.

ESLint configuration options and bugfixes are now such that we can
reasonably upgrade.

PR-URL: https://github.com/nodejs/node/pull/10561
Reviewed-By: Teddy Katz <teddy.katz@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Sam Roberts <vieuxtech@gmail.com>
2017-01-06 14:36:27 -08:00

47 lines
1.2 KiB
JavaScript

/**
* @fileoverview Rule to flag octal escape sequences in string literals.
* @author Ian Christian Myers
*/
"use strict";
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
module.exports = {
meta: {
docs: {
description: "disallow octal escape sequences in string literals",
category: "Best Practices",
recommended: false
},
schema: []
},
create(context) {
return {
Literal(node) {
if (typeof node.value !== "string") {
return;
}
const match = node.raw.match(/^([^\\]|\\[^0-7])*\\([0-3][0-7]{1,2}|[4-7][0-7]|[0-7])/);
if (match) {
const octalDigit = match[2];
// \0 is actually not considered an octal
if (match[2] !== "0" || typeof match[3] !== "undefined") {
context.report({ node, message: "Don't use octal: '\\{{octalDigit}}'. Use '\\u....' instead.", data: { octalDigit } });
}
}
}
};
}
};