58 lines
1.3 KiB
JavaScript
58 lines
1.3 KiB
JavaScript
'use strict';
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const {replaceTemplateElement} = require('./fix/index.js');
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const {
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isStringLiteral,
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isRegexLiteral,
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isTaggedTemplateLiteral,
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} = require('./ast/index.js');
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const MESSAGE_ID = 'no-hex-escape';
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const messages = {
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[MESSAGE_ID]: 'Use Unicode escapes instead of hexadecimal escapes.',
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};
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function checkEscape(context, node, value) {
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const fixedValue = value.replaceAll(/(?<=(?:^|[^\\])(?:\\\\)*\\)x/g, 'u00');
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if (value !== fixedValue) {
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return {
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node,
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messageId: MESSAGE_ID,
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fix: fixer =>
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node.type === 'TemplateElement'
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? replaceTemplateElement(fixer, node, fixedValue)
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: fixer.replaceText(node, fixedValue),
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};
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}
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}
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/** @param {import('eslint').Rule.RuleContext} context */
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const create = context => ({
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Literal(node) {
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if (isStringLiteral(node) || isRegexLiteral(node)) {
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return checkEscape(context, node, node.raw);
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}
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},
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TemplateElement(node) {
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if (isTaggedTemplateLiteral(node.parent, ['String.raw'])) {
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return;
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}
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return checkEscape(context, node, node.value.raw);
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},
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});
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/** @type {import('eslint').Rule.RuleModule} */
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module.exports = {
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create,
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meta: {
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type: 'suggestion',
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docs: {
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description: 'Enforce the use of Unicode escapes instead of hexadecimal escapes.',
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recommended: true,
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},
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fixable: 'code',
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messages,
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},
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};
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