41 lines
1.2 KiB
JavaScript
41 lines
1.2 KiB
JavaScript
/**
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* @author Toru Nagashima <https://github.com/mysticatea>
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* See LICENSE file in root directory for full license.
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*/
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"use strict"
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const { defineRegExpHandler } = require("../util/define-regexp-handler")
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module.exports = {
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meta: {
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docs: {
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description: "disallow RegExp lookbehind assertions.",
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category: "ES2018",
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recommended: false,
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url: "http://eslint-community.github.io/eslint-plugin-es-x/rules/no-regexp-lookbehind-assertions.html",
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},
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fixable: null,
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messages: {
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forbidden: "ES2018 RegExp lookbehind assertions are forbidden.",
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},
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schema: [],
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type: "problem",
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},
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create(context) {
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return defineRegExpHandler(context, (node) => {
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let found = false
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return {
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onLookaroundAssertionEnter(_start, kind) {
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if (kind === "lookbehind") {
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found = true
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}
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},
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onExit() {
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if (found) {
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context.report({ node, messageId: "forbidden" })
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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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