664 lines
24 KiB
JavaScript
664 lines
24 KiB
JavaScript
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/**
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* @author Toru Nagashima
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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 { rules: esRules } = require("eslint-plugin-es")
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const { getInnermostScope } = require("eslint-utils")
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const { Range } = require("semver")
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const getConfiguredNodeVersion = require("../../util/get-configured-node-version")
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const getSemverRange = require("../../util/get-semver-range")
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const mergeVisitorsInPlace = require("../../util/merge-visitors-in-place")
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const getOrSet = /^(?:g|s)et$/u
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const features = {
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//--------------------------------------------------------------------------
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// ES2015
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//--------------------------------------------------------------------------
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arrowFunctions: {
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ruleId: "no-arrow-functions",
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cases: [
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{
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supported: "4.0.0",
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messageId: "no-arrow-functions",
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},
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],
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},
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binaryNumericLiterals: {
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ruleId: "no-binary-numeric-literals",
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cases: [
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{
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supported: "4.0.0",
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messageId: "no-binary-numeric-literals",
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},
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],
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},
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blockScopedFunctions: {
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ruleId: "no-block-scoped-functions",
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cases: [
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{
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supported: "6.0.0",
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test: info => !info.isStrict,
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messageId: "no-block-scoped-functions-sloppy",
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},
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{
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supported: "4.0.0",
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messageId: "no-block-scoped-functions-strict",
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},
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],
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},
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blockScopedVariables: {
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ruleId: "no-block-scoped-variables",
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cases: [
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{
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supported: "6.0.0",
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test: info => !info.isStrict,
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messageId: "no-block-scoped-variables-sloppy",
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},
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{
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supported: "4.0.0",
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messageId: "no-block-scoped-variables-strict",
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},
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],
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},
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classes: {
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ruleId: "no-classes",
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cases: [
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{
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supported: "6.0.0",
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test: info => !info.isStrict,
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messageId: "no-classes-sloppy",
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},
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{
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supported: "4.0.0",
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messageId: "no-classes-strict",
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},
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],
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},
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computedProperties: {
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ruleId: "no-computed-properties",
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cases: [
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{
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supported: "4.0.0",
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messageId: "no-computed-properties",
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},
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],
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},
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defaultParameters: {
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ruleId: "no-default-parameters",
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cases: [
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{
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supported: "6.0.0",
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messageId: "no-default-parameters",
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},
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],
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},
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destructuring: {
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ruleId: "no-destructuring",
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cases: [
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{
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supported: "6.0.0",
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messageId: "no-destructuring",
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},
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],
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},
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forOfLoops: {
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ruleId: "no-for-of-loops",
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cases: [
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{
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supported: "0.12.0",
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messageId: "no-for-of-loops",
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},
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],
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},
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generators: {
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ruleId: "no-generators",
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cases: [
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{
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supported: "4.0.0",
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messageId: "no-generators",
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},
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],
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},
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modules: {
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ruleId: "no-modules",
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cases: [
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{
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supported: null,
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messageId: "no-modules",
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},
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],
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},
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"new.target": {
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ruleId: "no-new-target",
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cases: [
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{
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supported: "5.0.0",
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messageId: "no-new-target",
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},
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],
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},
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objectSuperProperties: {
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ruleId: "no-object-super-properties",
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cases: [
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{
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supported: "4.0.0",
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messageId: "no-object-super-properties",
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},
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],
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},
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octalNumericLiterals: {
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ruleId: "no-octal-numeric-literals",
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cases: [
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{
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supported: "4.0.0",
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messageId: "no-octal-numeric-literals",
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},
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],
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},
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propertyShorthands: {
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ruleId: "no-property-shorthands",
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cases: [
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{
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supported: "6.0.0",
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test: info =>
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info.node.shorthand && getOrSet.test(info.node.key.name),
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messageId: "no-property-shorthands-getset",
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},
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{
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supported: "4.0.0",
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messageId: "no-property-shorthands",
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},
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],
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},
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regexpU: {
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ruleId: "no-regexp-u-flag",
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cases: [
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{
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supported: "6.0.0",
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messageId: "no-regexp-u-flag",
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},
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],
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},
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regexpY: {
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ruleId: "no-regexp-y-flag",
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cases: [
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{
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supported: "6.0.0",
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messageId: "no-regexp-y-flag",
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},
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],
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},
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restParameters: {
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ruleId: "no-rest-parameters",
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cases: [
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{
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supported: "6.0.0",
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messageId: "no-rest-parameters",
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},
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],
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},
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spreadElements: {
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ruleId: "no-spread-elements",
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cases: [
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{
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supported: "5.0.0",
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messageId: "no-spread-elements",
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},
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],
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},
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templateLiterals: {
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ruleId: "no-template-literals",
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cases: [
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{
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supported: "4.0.0",
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messageId: "no-template-literals",
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},
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],
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},
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unicodeCodePointEscapes: {
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ruleId: "no-unicode-codepoint-escapes",
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cases: [
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{
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supported: "4.0.0",
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messageId: "no-unicode-codepoint-escapes",
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},
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],
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},
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//--------------------------------------------------------------------------
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// ES2016
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//--------------------------------------------------------------------------
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exponentialOperators: {
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ruleId: "no-exponential-operators",
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cases: [
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{
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supported: "7.0.0",
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messageId: "no-exponential-operators",
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},
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],
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},
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//--------------------------------------------------------------------------
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// ES2017
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//--------------------------------------------------------------------------
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asyncFunctions: {
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ruleId: "no-async-functions",
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cases: [
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{
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supported: "7.6.0",
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messageId: "no-async-functions",
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},
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],
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},
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trailingCommasInFunctions: {
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ruleId: "no-trailing-function-commas",
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cases: [
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{
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supported: "8.0.0",
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messageId: "no-trailing-function-commas",
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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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// ES2018
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//--------------------------------------------------------------------------
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asyncIteration: {
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ruleId: "no-async-iteration",
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||
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cases: [
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{
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supported: "10.0.0",
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messageId: "no-async-iteration",
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},
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],
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},
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malformedTemplateLiterals: {
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ruleId: "no-malformed-template-literals",
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cases: [
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{
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supported: "8.10.0",
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messageId: "no-malformed-template-literals",
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},
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],
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},
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regexpLookbehind: {
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ruleId: "no-regexp-lookbehind-assertions",
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cases: [
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{
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supported: "8.10.0",
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messageId: "no-regexp-lookbehind-assertions",
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},
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],
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},
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regexpNamedCaptureGroups: {
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||
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ruleId: "no-regexp-named-capture-groups",
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||
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cases: [
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{
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||
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supported: "10.0.0",
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||
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messageId: "no-regexp-named-capture-groups",
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},
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],
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},
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regexpS: {
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ruleId: "no-regexp-s-flag",
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cases: [
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{
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||
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supported: "8.10.0",
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||
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messageId: "no-regexp-s-flag",
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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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regexpUnicodeProperties: {
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ruleId: "no-regexp-unicode-property-escapes",
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cases: [
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{
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||
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supported: "10.0.0",
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messageId: "no-regexp-unicode-property-escapes",
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||
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},
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||
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],
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},
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restSpreadProperties: {
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ruleId: "no-rest-spread-properties",
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||
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cases: [
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||
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{
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||
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supported: "8.3.0",
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||
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messageId: "no-rest-spread-properties",
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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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|
// ES2019
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||
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|
//--------------------------------------------------------------------------
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||
|
|
jsonSuperset: {
|
||
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|
ruleId: "no-json-superset",
|
||
|
|
cases: [
|
||
|
|
{
|
||
|
|
supported: "10.0.0",
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||
|
|
messageId: "no-json-superset",
|
||
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|
},
|
||
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|
],
|
||
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|
},
|
||
|
|
optionalCatchBinding: {
|
||
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|
ruleId: "no-optional-catch-binding",
|
||
|
|
cases: [
|
||
|
|
{
|
||
|
|
supported: "10.0.0",
|
||
|
|
messageId: "no-optional-catch-binding",
|
||
|
|
},
|
||
|
|
],
|
||
|
|
},
|
||
|
|
|
||
|
|
//--------------------------------------------------------------------------
|
||
|
|
// ES2020
|
||
|
|
//--------------------------------------------------------------------------
|
||
|
|
bigint: {
|
||
|
|
ruleId: "no-bigint",
|
||
|
|
cases: [
|
||
|
|
{
|
||
|
|
supported: "10.4.0",
|
||
|
|
test: info => info.node.type === "Literal",
|
||
|
|
messageId: "no-bigint",
|
||
|
|
},
|
||
|
|
{
|
||
|
|
supported: null,
|
||
|
|
test: ({ node }) =>
|
||
|
|
node.type === "Literal" &&
|
||
|
|
(node.parent.type === "Property" ||
|
||
|
|
node.parent.type === "MethodDefinition") &&
|
||
|
|
!node.parent.computed &&
|
||
|
|
node.parent.key === node,
|
||
|
|
messageId: "no-bigint-property-names",
|
||
|
|
},
|
||
|
|
],
|
||
|
|
},
|
||
|
|
dynamicImport: {
|
||
|
|
ruleId: "no-dynamic-import",
|
||
|
|
cases: [
|
||
|
|
{
|
||
|
|
supported: new Range(">=12.17 <13 || >=13.2"),
|
||
|
|
messageId: "no-dynamic-import",
|
||
|
|
},
|
||
|
|
],
|
||
|
|
},
|
||
|
|
optionalChaining: {
|
||
|
|
ruleId: "no-optional-chaining",
|
||
|
|
cases: [
|
||
|
|
{
|
||
|
|
supported: "14.0.0",
|
||
|
|
messageId: "no-optional-chaining",
|
||
|
|
},
|
||
|
|
],
|
||
|
|
},
|
||
|
|
nullishCoalescingOperators: {
|
||
|
|
ruleId: "no-nullish-coalescing-operators",
|
||
|
|
cases: [
|
||
|
|
{
|
||
|
|
supported: "14.0.0",
|
||
|
|
messageId: "no-nullish-coalescing-operators",
|
||
|
|
},
|
||
|
|
],
|
||
|
|
},
|
||
|
|
}
|
||
|
|
const keywords = Object.keys(features)
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Parses the options.
|
||
|
|
* @param {RuleContext} context The rule context.
|
||
|
|
* @returns {{version:Range,ignores:Set<string>}} Parsed value.
|
||
|
|
*/
|
||
|
|
function parseOptions(context) {
|
||
|
|
const raw = context.options[0] || {}
|
||
|
|
const filePath = context.getFilename()
|
||
|
|
const version = getConfiguredNodeVersion(raw.version, filePath)
|
||
|
|
const ignores = new Set(raw.ignores || [])
|
||
|
|
|
||
|
|
return Object.freeze({ version, ignores })
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Find the scope that a given node belongs to.
|
||
|
|
* @param {Scope} initialScope The initial scope to find.
|
||
|
|
* @param {Node} node The AST node.
|
||
|
|
* @returns {Scope} The scope that the node belongs to.
|
||
|
|
*/
|
||
|
|
function normalizeScope(initialScope, node) {
|
||
|
|
let scope = getInnermostScope(initialScope, node)
|
||
|
|
|
||
|
|
while (scope && scope.block === node) {
|
||
|
|
scope = scope.upper
|
||
|
|
}
|
||
|
|
|
||
|
|
return scope
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Define the visitor object as merging the rules of eslint-plugin-es.
|
||
|
|
* @param {RuleContext} context The rule context.
|
||
|
|
* @param {{version:Range,ignores:Set<string>}} options The options.
|
||
|
|
* @returns {object} The defined visitor.
|
||
|
|
*/
|
||
|
|
function defineVisitor(context, options) {
|
||
|
|
const testInfoPrototype = {
|
||
|
|
get isStrict() {
|
||
|
|
return normalizeScope(context.getScope(), this.node).isStrict
|
||
|
|
},
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check whether a given case object is full-supported on the configured node version.
|
||
|
|
* @param {{supported:string}} aCase The case object to check.
|
||
|
|
* @returns {boolean} `true` if it's supporting.
|
||
|
|
*/
|
||
|
|
function isNotSupportingVersion(aCase) {
|
||
|
|
if (!aCase.supported) {
|
||
|
|
return true
|
||
|
|
}
|
||
|
|
|
||
|
|
if (aCase.supported instanceof Range) {
|
||
|
|
return !options.version.intersects(aCase.supported)
|
||
|
|
}
|
||
|
|
|
||
|
|
return options.version.intersects(getSemverRange(`<${aCase.supported}`))
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Define the predicate function to check whether a given case object is supported on the configured node version.
|
||
|
|
* @param {Node} node The node which is reported.
|
||
|
|
* @returns {function(aCase:{supported:string}):boolean} The predicate function.
|
||
|
|
*/
|
||
|
|
function isNotSupportingOn(node) {
|
||
|
|
return aCase =>
|
||
|
|
isNotSupportingVersion(aCase) &&
|
||
|
|
(!aCase.test || aCase.test({ node, __proto__: testInfoPrototype }))
|
||
|
|
}
|
||
|
|
|
||
|
|
return (
|
||
|
|
keywords
|
||
|
|
// Omit full-supported features and ignored features by options
|
||
|
|
// because this rule never reports those.
|
||
|
|
.filter(
|
||
|
|
keyword =>
|
||
|
|
!options.ignores.has(keyword) &&
|
||
|
|
features[keyword].cases.some(isNotSupportingVersion)
|
||
|
|
)
|
||
|
|
// Merge remaining features with overriding `context.report()`.
|
||
|
|
.reduce((visitor, keyword) => {
|
||
|
|
const { ruleId, cases } = features[keyword]
|
||
|
|
const rule = esRules[ruleId]
|
||
|
|
const thisContext = {
|
||
|
|
__proto__: context,
|
||
|
|
|
||
|
|
// Override `context.report()` then:
|
||
|
|
// - ignore if it's supported.
|
||
|
|
// - override reporting messages.
|
||
|
|
report(descriptor) {
|
||
|
|
// Set additional information.
|
||
|
|
if (descriptor.data) {
|
||
|
|
descriptor.data.version = options.version.raw
|
||
|
|
} else {
|
||
|
|
descriptor.data = { version: options.version.raw }
|
||
|
|
}
|
||
|
|
descriptor.fix = undefined
|
||
|
|
|
||
|
|
// Test and report.
|
||
|
|
const node = descriptor.node
|
||
|
|
const hitCase = cases.find(isNotSupportingOn(node))
|
||
|
|
if (hitCase) {
|
||
|
|
descriptor.messageId = hitCase.messageId
|
||
|
|
descriptor.data.supported = hitCase.supported
|
||
|
|
super.report(descriptor)
|
||
|
|
}
|
||
|
|
},
|
||
|
|
}
|
||
|
|
return mergeVisitorsInPlace(visitor, rule.create(thisContext))
|
||
|
|
}, {})
|
||
|
|
)
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports = {
|
||
|
|
meta: {
|
||
|
|
docs: {
|
||
|
|
description:
|
||
|
|
"disallow unsupported ECMAScript syntax on the specified version",
|
||
|
|
category: "Possible Errors",
|
||
|
|
recommended: true,
|
||
|
|
url: "https://github.com/weiran-zsd/eslint-plugin-node/blob/HEAD/docs/rules/no-unsupported-features/es-syntax.md",
|
||
|
|
},
|
||
|
|
type: "problem",
|
||
|
|
fixable: null,
|
||
|
|
schema: [
|
||
|
|
{
|
||
|
|
type: "object",
|
||
|
|
properties: {
|
||
|
|
version: {
|
||
|
|
type: "string",
|
||
|
|
},
|
||
|
|
ignores: {
|
||
|
|
type: "array",
|
||
|
|
items: {
|
||
|
|
enum: Object.keys(features),
|
||
|
|
},
|
||
|
|
uniqueItems: true,
|
||
|
|
},
|
||
|
|
},
|
||
|
|
additionalProperties: false,
|
||
|
|
},
|
||
|
|
],
|
||
|
|
messages: {
|
||
|
|
//------------------------------------------------------------------
|
||
|
|
// ES2015
|
||
|
|
//------------------------------------------------------------------
|
||
|
|
"no-arrow-functions":
|
||
|
|
"Arrow functions are not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-binary-numeric-literals":
|
||
|
|
"Binary numeric literals are not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-block-scoped-functions-strict":
|
||
|
|
"Block-scoped functions in strict mode are not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-block-scoped-functions-sloppy":
|
||
|
|
"Block-scoped functions in non-strict mode are not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-block-scoped-variables-strict":
|
||
|
|
"Block-scoped variables in strict mode are not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-block-scoped-variables-sloppy":
|
||
|
|
"Block-scoped variables in non-strict mode are not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-classes-strict":
|
||
|
|
"Classes in strict mode are not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-classes-sloppy":
|
||
|
|
"Classes in non-strict mode are not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-computed-properties":
|
||
|
|
"Computed properties are not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-default-parameters":
|
||
|
|
"Default parameters are not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-destructuring":
|
||
|
|
"Destructuring is not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-for-of-loops":
|
||
|
|
"'for-of' loops are not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-generators":
|
||
|
|
"Generator functions are not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-modules":
|
||
|
|
"Import and export declarations are not supported yet.",
|
||
|
|
"no-new-target":
|
||
|
|
"'new.target' is not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-object-super-properties":
|
||
|
|
"'super' in object literals is not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-octal-numeric-literals":
|
||
|
|
"Octal numeric literals are not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-property-shorthands":
|
||
|
|
"Property shorthands are not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-property-shorthands-getset":
|
||
|
|
"Property shorthands of 'get' and 'set' are not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-regexp-u-flag":
|
||
|
|
"RegExp 'u' flag is not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-regexp-y-flag":
|
||
|
|
"RegExp 'y' flag is not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-rest-parameters":
|
||
|
|
"Rest parameters are not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-spread-elements":
|
||
|
|
"Spread elements are not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-template-literals":
|
||
|
|
"Template literals are not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-unicode-codepoint-escapes":
|
||
|
|
"Unicode code point escapes are not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
|
||
|
|
//------------------------------------------------------------------
|
||
|
|
// ES2016
|
||
|
|
//------------------------------------------------------------------
|
||
|
|
"no-exponential-operators":
|
||
|
|
"Exponential operators are not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
|
||
|
|
//------------------------------------------------------------------
|
||
|
|
// ES2017
|
||
|
|
//------------------------------------------------------------------
|
||
|
|
"no-async-functions":
|
||
|
|
"Async functions are not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-trailing-function-commas":
|
||
|
|
"Trailing commas in function syntax are not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
|
||
|
|
//------------------------------------------------------------------
|
||
|
|
// ES2018
|
||
|
|
//------------------------------------------------------------------
|
||
|
|
"no-async-iteration":
|
||
|
|
"Async iteration is not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-malformed-template-literals":
|
||
|
|
"Malformed template literals are not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-regexp-lookbehind-assertions":
|
||
|
|
"RegExp lookbehind assertions are not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-regexp-named-capture-groups":
|
||
|
|
"RegExp named capture groups are not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-regexp-s-flag":
|
||
|
|
"RegExp 's' flag is not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-regexp-unicode-property-escapes":
|
||
|
|
"RegExp Unicode property escapes are not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-rest-spread-properties":
|
||
|
|
"Rest/spread properties are not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
|
||
|
|
//------------------------------------------------------------------
|
||
|
|
// ES2019
|
||
|
|
//------------------------------------------------------------------
|
||
|
|
"no-json-superset":
|
||
|
|
"'\\u{{code}}' in string literals is not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-optional-catch-binding":
|
||
|
|
"The omission of 'catch' binding is not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
|
||
|
|
//------------------------------------------------------------------
|
||
|
|
// ES2020
|
||
|
|
//------------------------------------------------------------------
|
||
|
|
"no-bigint":
|
||
|
|
"Bigint literals are not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-bigint-property-names":
|
||
|
|
"Bigint literal property names are not supported yet.",
|
||
|
|
"no-dynamic-import":
|
||
|
|
"'import()' expressions are not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-optional-chaining":
|
||
|
|
"Optional chainings are not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
"no-nullish-coalescing-operators":
|
||
|
|
"Nullish coalescing operators are not supported until Node.js {{supported}}. The configured version range is '{{version}}'.",
|
||
|
|
},
|
||
|
|
},
|
||
|
|
create(context) {
|
||
|
|
return defineVisitor(context, parseOptions(context))
|
||
|
|
},
|
||
|
|
}
|