eslint-plugin-regexp
Version:
ESLint plugin for finding RegExp mistakes and RegExp style guide violations.
52 lines (51 loc) • 2.02 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
const utils_1 = require("../utils");
exports.default = (0, utils_1.createRule)("prefer-unicode-codepoint-escapes", {
meta: {
docs: {
description: "enforce use of unicode codepoint escapes",
category: "Stylistic Issues",
recommended: true,
},
fixable: "code",
schema: [],
messages: {
disallowSurrogatePair: "Use Unicode codepoint escapes instead of Unicode escapes using surrogate pairs.",
},
type: "suggestion",
},
create(context) {
function createVisitor(regexpContext) {
const { node, flags, getRegexpLocation, fixReplaceNode } = regexpContext;
if (!flags.unicode && !flags.unicodeSets) {
return {};
}
return {
onCharacterEnter(cNode) {
if (cNode.value >= 0x10000) {
if (/^(?:\\u[\dA-Fa-f]{4}){2}$/u.test(cNode.raw)) {
context.report({
node,
loc: getRegexpLocation(cNode),
messageId: "disallowSurrogatePair",
fix: fixReplaceNode(cNode, () => {
let text = String.fromCodePoint(cNode.value)
.codePointAt(0)
.toString(16);
if (/[A-F]/u.test(cNode.raw)) {
text = text.toUpperCase();
}
return `\\u{${text}}`;
}),
});
}
}
},
};
}
return (0, utils_1.defineRegexpVisitor)(context, {
createVisitor,
});
},
});