51 lines
2 KiB
JavaScript
51 lines
2 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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const utils_1 = require("../utils");
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exports.default = (0, utils_1.createRule)("prefer-unicode-codepoint-escapes", {
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meta: {
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docs: {
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description: "enforce use of unicode codepoint escapes",
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category: "Stylistic Issues",
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recommended: true,
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},
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fixable: "code",
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schema: [],
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messages: {
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disallowSurrogatePair: "Use Unicode codepoint escapes instead of Unicode escapes using surrogate pairs.",
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},
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type: "suggestion",
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},
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create(context) {
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function createVisitor(regexpContext) {
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const { node, flags, getRegexpLocation, fixReplaceNode } = regexpContext;
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if (!flags.unicode && !flags.unicodeSets) {
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return {};
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}
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return {
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onCharacterEnter(cNode) {
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if (cNode.value >= 0x10000) {
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if (/^(?:\\u[\dA-Fa-f]{4}){2}$/u.test(cNode.raw)) {
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context.report({
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node,
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loc: getRegexpLocation(cNode),
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messageId: "disallowSurrogatePair",
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fix: fixReplaceNode(cNode, () => {
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let text = String.fromCodePoint(cNode.value)
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.codePointAt(0)
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.toString(16);
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if (/[A-F]/u.test(cNode.raw)) {
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text = text.toUpperCase();
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}
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return `\\u{${text}}`;
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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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}
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return (0, utils_1.defineRegexpVisitor)(context, {
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createVisitor,
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});
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},
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});
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