51 lines
1.3 KiB
JavaScript
51 lines
1.3 KiB
JavaScript
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/**
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* @fileoverview Rule to flag octal escape sequences in string literals.
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* @author Ian Christian Myers
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*/
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"use strict";
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//------------------------------------------------------------------------------
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// Rule Definition
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//------------------------------------------------------------------------------
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module.exports = {
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meta: {
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type: "suggestion",
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docs: {
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description: "disallow octal escape sequences in string literals",
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category: "Best Practices",
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recommended: false,
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url: "https://eslint.org/docs/rules/no-octal-escape"
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},
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schema: []
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},
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create(context) {
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return {
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Literal(node) {
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if (typeof node.value !== "string") {
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return;
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}
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const match = node.raw.match(/^([^\\]|\\[^0-7])*\\([0-3][0-7]{1,2}|[4-7][0-7]|[0-7])/u);
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if (match) {
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const octalDigit = match[2];
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// \0 is actually not considered an octal
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if (match[2] !== "0" || typeof match[3] !== "undefined") {
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context.report({ node, message: "Don't use octal: '\\{{octalDigit}}'. Use '\\u....' instead.", data: { octalDigit } });
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}
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}
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}
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};
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}
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};
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