/**
|
* @fileoverview Rule to flag octal escape sequences in string literals.
|
* @author Ian Christian Myers
|
*/
|
|
"use strict";
|
|
//------------------------------------------------------------------------------
|
// Rule Definition
|
//------------------------------------------------------------------------------
|
|
module.exports = {
|
meta: {
|
type: "suggestion",
|
|
docs: {
|
description: "disallow octal escape sequences in string literals",
|
category: "Best Practices",
|
recommended: false,
|
url: "https://eslint.org/docs/rules/no-octal-escape"
|
},
|
|
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])/u);
|
|
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 } });
|
}
|
}
|
}
|
|
};
|
|
}
|
};
|
