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Showing content from https://github.com/mysticatea/regexpp/commit/df4a3002571c998e5c09430f1b65572a297f10e1 below:

✨ change the default ecma version. · mysticatea/regexpp@df4a300 · GitHub

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 @@ -0,0 +1 @@

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+
 export type EcmaVersion = 5 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020

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 @@ -12,6 +12,7 @@ import {

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 Pattern,

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 Quantifier,

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 } from "./ast"

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+
 import { EcmaVersion } from "./ecma-versions"

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 import { HyphenMinus } from "./unicode"

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 import { RegExpValidator } from "./validator"

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 @@ -29,7 +30,7 @@ const DummyCapturingGroup: CapturingGroup = {} as any

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 class RegExpParserState {

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 public readonly strict: boolean

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 public readonly ecmaVersion: 5 | 2015 | 2016 | 2017 | 2018

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 public readonly ecmaVersion: EcmaVersion

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 private _node: AppendableNode = DummyPattern

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 private _flags: Flags = DummyFlags

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 private _backreferences: Backreference[] = []


 @@ -39,7 +40,7 @@ class RegExpParserState {

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 public constructor(options?: RegExpParser.Options) {

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 this.strict = Boolean(options && options.strict)

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 this.ecmaVersion = (options && options.ecmaVersion) || 2018

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 this.ecmaVersion = (options && options.ecmaVersion) || 2020

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 public get pattern(): Pattern {


 @@ -501,12 +502,13 @@ export namespace RegExpParser {

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 strict?: boolean

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/**

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  * ECMAScript version. Default is `2018`.

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  * ECMAScript version. Default is `2020`.

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  * - `2015` added `u` and `y` flags.

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  * - `2018` added `s` flag, Named Capturing Group, Lookbehind Assertion,

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  * and Unicode Property Escape.

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  * - `2019` and `2020` added more valid Unicode Property Escapes.

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*/

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 ecmaVersion?: 5 | 2015 | 2016 | 2017 | 2018

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+
 ecmaVersion?: EcmaVersion

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 @@ -1,3 +1,4 @@

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 import { EcmaVersion } from "./ecma-versions"

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 import { Reader } from "./reader"

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 import { RegExpSyntaxError } from "./regexp-syntax-error"

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 import {


 @@ -123,12 +124,13 @@ export namespace RegExpValidator {

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 strict?: boolean

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/**

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-
  * ECMAScript version. Default is `2018`.

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+
  * ECMAScript version. Default is `2020`.

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  * - `2015` added `u` and `y` flags.

128 129


  * - `2018` added `s` flag, Named Capturing Group, Lookbehind Assertion,

129 130


  * and Unicode Property Escape.

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+
  * - `2019` and `2020` added more valid Unicode Property Escapes.

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*/

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-
 ecmaVersion?: 5 | 2015 | 2016 | 2017 | 2018

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+
 ecmaVersion?: EcmaVersion

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/**

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  * A function that is called when the validator entered a RegExp literal.


 @@ -543,7 +545,7 @@ export class RegExpValidator {

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 private get ecmaVersion() {

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 return this._options.ecmaVersion || 2018

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+
 return this._options.ecmaVersion || 2020

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 private onLiteralEnter(start: number): void {

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