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56 lines
1.4 KiB
56 lines
1.4 KiB
/** |
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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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/** @type {import('../shared/types').Rule} */ |
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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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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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messages: { |
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octalEscapeSequence: "Don't use octal: '\\{{sequence}}'. Use '\\u....' instead." |
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} |
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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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// \0 represents a valid NULL character if it isn't followed by a digit. |
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const match = node.raw.match( |
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/^(?:[^\\]|\\.)*?\\([0-3][0-7]{1,2}|[4-7][0-7]|0(?=[89])|[1-7])/su |
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); |
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if (match) { |
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context.report({ |
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node, |
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messageId: "octalEscapeSequence", |
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data: { sequence: match[1] } |
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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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