Cronologia delle Funzionalità

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Quali nuove funzionalità principali abbiamo introdotto in ogni versione di Babel? Questa pagina include un brevissimo riepilogo per ogni release minore, oppure puoi leggere il changelog completo su GitHub! Inoltre, utilizza questa cronologia per seguire altri importanti sforzi, come il progetto babel-polyfills.

Babel 7.28.0
blog post
- Enable the explicit resource management proposal by default
- Support for the discard binding Stage 2 proposal
Babel 7.26.0
blog post
- Enable the regular expression modifiers Stage 4 proposal by default
- Enable parsing of the import attributes Stage 4 proposal by default
Babel 7.25.0
blog post
- Enable the Stage 4 duplicated named capturing groups proposal by default
Babel 7.24.0
blog post
- Support for the JSON modules Stage 3 proposal
Babel 7.23.0
blog post
- Support for the Decorator Metadata Stage 3 proposal
- Support for the Source Phase Import Stage 3 proposal
- Support for the Deferred Import Evaluation Stage 2 proposal
- Support for the Optional Chaining Assignment proposal
- Support for rewriting .ts extensions in imports
Babel 7.22.0
blog post
- Enable the Stage 4 RegExp v flag proposal by default
- Support for the explicit resource management proposal Stage 3 proposal, including the async version
  JavaScript
```
{
  await using db = connect(databaseURL);
  let user = await db.getUserById(userId);
  await db.createPost(user.name, "Hi! :)");
} // Automatically close the db
```
- Support for the updates of the decorators proposal that reached consensus in the March 2023 and May 2023 TC39 meetings
- Parsing support for the Stage 3 import attributes proposal, previously known as "import assertions"
  JavaScript
```
import data from "./data.json" with { type: "json" };
```
Babel 7.21.0
blog post
- TypeScript 5.0 support
- Support for the updates of the decorators proposal that reached consensus in the January 2023 TC39 meeting
- Support for the inline RegExp modifiers Stage 3 proposal
  JavaScript
```
/(?i-m:a.)/m.exec("a\nAb"); // ["Ab"]
```
Babel 7.20.0
blog post
- TypeScript 4.9 support
- Parser support for the explicit resource management Stage 2 proposal
  JavaScript
```
{
  using handle = openFile(name, "w+");
  write(handle, "Hi!\n");
  write(handle, ":)\n");
} // Automatically close the file
```
- Parser support for the import reflection Stage 2 proposal
  JavaScript
```
import module mod from "./mod.js";

// later ...
import(mod);
```
babel-loader 9.0.0
release
Babel 7.19.0
blog post
- Support for the Stage 3 version of the decorators proposal
- Transform support for the duplicate named capturing groups Stage 3 proposal
  JavaScript
```
/(?<year>\d\d\d\d)-(?<month>\d\d)|(?<month>\d\d)-(?<year>\d\d\d\d)/
```
Babel 7.18.0
blog post
- TypeScript 4.7 support
- Transform support for the Private destructuring Stage 2 proposal
  JavaScript
```
class A {
  #x = 2;
  method() {
    const { #x: x } = this;
  }
}
```
- No more need to manually include the regenerator-runtime helper when compiling generators
Babel 7.17.0
blog post
- Support for the new version of the decorators Stage 2 proposal
  JavaScript
```
class A {
  @reactive #x = 2;

  @logger
  method() {
    this.#x++;
  }
}
```
- Support for the RegExp set notation and properties of strings Stage 2 proposal
  JavaScript
```
/[\p{RGI_Emoji}&&[\0-\uFFFF]]/v;
```
- Parser support for the private destructuring Stage 2 proposal
  JavaScript
```
class A {
  #x = 2;
  method() {
    const { #x: x } = this;
  }
}
```
Babel 7.16.0
blog post
- Enable the class static blocks Stage 4 proposal by default
  JavaScript
```
class A {
  static {
    initialize(A);
  }
}
```
- TypeScript 4.5 support
- Support ESLint 8 in @babel/eslint-parser.
Babel 7.15.0
blog post
- Enable parsing for the top-level await Stage 4 proposal by default
  JavaScript
```
import db from "db";
await db.connect();
```
- Enable the Private Brand Checks Stage 4 proposal by default
  JavaScript
```
class A {
  static { initialize(A); } // static block
  #field;
  is(obj) {
    return #field in obj; // private brand check
  }
}
```
- Support the "Hack-style" pipeline operator Stage 2 proposal
  JavaScript
```
const result = "World" |> `Hello, ${%}!` |> alert(%);
```
- TypeScript 4.4 support
Babel 7.14.0
blog post
- Enable the Class Fields, Private Methods and Static Class Features Stage 4 proposals by default
- Add the Private Brand Checks and Static Class Blocks proposals to @babel/preset-env's shippedProposals
  JavaScript
```
class A {
  static { initialize(A); } // static block
  #field;
  is(obj) {
    return #field in obj; // private brand check
  }
}
```
- Support for the async do expressions proposal
  JavaScript
```
let valP = async do {
  2 + await computeIt();
};
```
- Support for the importInterop: "node" option in @babel/plugin-transform-modules-commonjs, to aligh Babel with the Node.js behavior
- TypeScript 4.3 support
Babel 7.13.0
blog post
- Top-level targets option (RFC)
- Granular compiler assumptions (docs, RFC)
- Support for the Records and Tuples proposals
  JavaScript
```
let rec = #{ x: 1 };
let tup = #[1, 2, 3];
```
- TypeScript 4.2 support
Babel 7.12.0
blog post
- Support for the class static blocks proposal
  JavaScript
```
class A {
  static { initialize(A); }
}
```
- Support for imports and exports string names
  JavaScript
```
let happy = "wooo!";
export { happy as "😃" };
```
- Parser support for the Import Assertions proposal
  JavaScript
```
import json from "./foo.json" assert { type: "json" };
```
- TypeScript 4.1 support
Babel 7.11.0
blog post
- Enable the Logical Assignment and Numeric Separator Stage 4 proposals by default
- Parser support for the Decimal proposal
  JavaScript
```
console.assert(0.1m + 0.2m === 0.3m);
```
- TypeScript 4.0 support
@babel/eslint-parser
blog post
Babel 7.10.0
blog post
- Enable parser support for the import.meta Stage 4 proposal by default
- Support for the Ergonomic brand checks for Private Fields proposal
  JavaScript
```
class Car {
  #plate;
  race(other) {
     if (#plate in other) console.log("Racing against another car!");
  }
}
```
babel-polyfills
repository
Babel 7.9.0
blog post
- bugfixes option in @babel/preset-env, to workaround browsers bugs rather than compiling whole Features
- TypeScript 3.8 support
- Support for Flow declare class fields
- Support for the automatic JSX runtime
Babel 7.8.0
blog post
- Enable the Optional Chaining and the Nullish Coalescing Stage 4 proposals by default
- Support .mjs configuration files
Babel 7.7.0
blog post
- Parser support for the top-level await proposal
  JavaScript
```
import db from "./database.js";

await db.connect();
```
- Add error recovery support for Early Errors in @babel/parser
- Support .json and .cjs configuration files
- TypeScript 3.7 support
Babel 7.6.0
blog post
- Support for static private accessors, part of the static class features proposal
  JavaScript
```
class Dog {
  static get #className() { return "Dog"; }
}
```
Babel 7.5.0
blog post
- Support for the F# pipeline operator proposal
  JavaScript
```
num |> add(2) |> double
```
- TypeScript namespace support
Babel 7.4.0
blog post
- Support for injecting core-js@3 polyfills
- Support for the Partial Application proposal
  JavaScript
```
strings.map(parseInt(?));
```
- Support for static private methods, part of the static class features proposal
  JavaScript
```
class Dog {
  static #register() { /* ... */ }
}
```
- TypeScript 3.4 support
Babel 7.3.0
blog post
- Support for instance private accessors, part of the private methods proposal
  JavaScript
```
class Dog {
  get #randomId() { return Math.random(); }
}
```
- Support for the smart pipeline operator proposal
  JavaScript
```
num |> add(2, #) |> double
```
- Support for named capturing groups in regular expressions
  JavaScript
```
str.match({String.raw`/^(?<year>\d{4})-(?<month>\d{2})-(?<day>\d{2})$/`})
```
- TypeScript 3.2 and 2.9 support
Babel 7.2.0
blog post
- Support for instance private methods, part of the private methods proposal
  JavaScript
```
class Dog {
  #bark() { console.log("Mew!") }
}
```
Babel 7.1.0
blog post
- Support for the decorators proposal, as it was specified in September 2018
  JavaScript
```
class Person {
  @autoIncrement age;
}
```
- Support for static private fields, part of the static class features proposal
  JavaScript
```
class Person {
  static #classId = 3;
}
```
Babel 7
blog post
This has a lot more changes since it was 2 years of pre-releases.
- Drop support for un-maintained Node versions: 0.10, 0.12, 4, 5
- Switch to scoped packages (babel-core to @babel/core)
- Remove yearly presets (@babel/preset-es2015) and Stage presets (@babel/preset-stage-0) (blog post).
- Added "pure" (/*#__PURE__*/ ) annotation support in certain cases. (Implemented later as @babel/helper-annotate-as-pure
- Add project-wide babel.config.js config file (docs) and overrides config option.
- Added "useBuiltIns: "usage" to @babel/preset-env
- Support TypeScript via @babel/preset-typescript
- Support JSX Fragments <></>
- Support a ton of TC39 proposals:
  - Unicode Property Regex
  - JSON Superset
  - new.target
  - Class Private Instance Fields (class A { #b = 2 })
  - Optional Catch Binding try { throw 0 } catch { do() }
  - BigInt (syntax only)
  - import.meta (syntax only) (import.meta.url)
  - Numeric Separators (1_000)
  - function.sent
  - Optional Chaining (a?.b)
  - Logical Assignment Operators (a &&= b; a ||= b)
  - Nullish Coalescing Operator (a ?? b)
  - Pipeline Operator (a |> b)
  - Throw Expressions (() => throw new Error("a"))

Babel 7.28.0​

Babel 7.26.0​

Babel 7.25.0​

Babel 7.24.0​

Babel 7.23.0​

Babel 7.22.0​

Babel 7.21.0​

Babel 7.20.0​

babel-loader 9.0.0​

Babel 7.19.0​

Babel 7.18.0​

Babel 7.17.0​

Babel 7.16.0​

Babel 7.15.0​

Babel 7.14.0​

Babel 7.13.0​

Babel 7.12.0​

Babel 7.11.0​

@babel/eslint-parser​

Babel 7.10.0​

babel-polyfills​

Babel 7.9.0​

Babel 7.8.0​

Babel 7.7.0​

Babel 7.6.0​

Babel 7.5.0​

Babel 7.4.0​

Babel 7.3.0​

Babel 7.2.0​

Babel 7.1.0​

Babel 7​

Babel 7.28.0

Babel 7.26.0

Babel 7.25.0

Babel 7.24.0

Babel 7.23.0

Babel 7.22.0

Babel 7.21.0

Babel 7.20.0

babel-loader 9.0.0

Babel 7.19.0

Babel 7.18.0

Babel 7.17.0

Babel 7.16.0

Babel 7.15.0

Babel 7.14.0

Babel 7.13.0

Babel 7.12.0

Babel 7.11.0

@babel/eslint-parser

Babel 7.10.0

babel-polyfills

Babel 7.9.0

Babel 7.8.0

Babel 7.7.0

Babel 7.6.0

Babel 7.5.0

Babel 7.4.0

Babel 7.3.0

Babel 7.2.0

Babel 7.1.0

Babel 7