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CHANGELOG.md

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3.25.0 (2022-08-01)

  • Add two new options to more closely match the module: nodenext option from TypeScript 4.7:
    • When using the imports transform, the new flag preserveDynamicImport will leave dynamic import() calls alone rather than compiling them to promise-wrapped require. This makes it possible to load ESM modules from CommonJS. (#727)
    • When not using the imports transform, the new flag injectCreateRequireForImportRequire will compile import foo = require("foo"); to use createRequire so that can work in a Node ES module. (#728)
  • When disableESTransforms is enabled, remove abstract fields in the same way that declare fields are removed. This matches TypeScript's behavior. (#732)

3.24.0 (2022-07-14)

  • Add support for all new syntax in TypeScript 4.7: (#719)
    • Instantiation expressions: const NumberSet = Set<number>;
    • extends on infer: T extends [infer S extends string, ...unknown[]] ? S : never;
    • Variance annotations: type Getter<out T> = () => T;
  • Add parsing support for the accessor keyword in ES decorators. (#716)
  • Fix invalid ESM output that sometimes happened when eliding TS star imports. (#723)
  • Fix lots of parser edge case bugs. Examples of code that confused the parser before but now works:
    • a as b ?? c (#721)
    • const a: Array<number>=[]; (#717)
    • f<<T>() => void>() (#716)
    • Some additional cases involving line break handling. (#714)
  • Fix some edge cases with JSX entity transformation. (#717)

3.23.0 (2022-07-01)

  • Add support for TS 4.5 import/export type modifiers. (#713)
  • Fix parsing bug that failed on scientific notation with dot access. (#711)

3.22.0 (2022-06-27)

  • Add support for Flow enums. (#708, #709)
  • Fix some parser bugs when detecting arrow functions. (#673)

3.21.1 (2022-06-21)

  • Allow re-export after star export of same name. (#698) (Cameron Pitt)

3.21.0 (2022-04-06)

  • Restructure package directory layout to better support ESM. (#684) (Neo Nie)

3.20.3 (2021-12-18)

  • Allow the names true, false, and null as TS enum keys. (#656, #657) (pushkine, Alan Pierce)
  • Properly handle TS definite assignment assertions for private fields and when disabling the class transform. (#658)
  • Switch pirates to @astra-mod/pirates
  • Add support to pass preHook option to pirates

3.20.2 (2021-10-07)

  • Fix ASI issue that broke function declarations immediately following a default export. (#648) (Ben Lambert)

3.20.1 (2021-08-09)

  • Fix transformation of anonymous "export default" classes. (#614) (Matthieu Gicquel)
  • Handle shadowed globals when they are JSX names. (#642) (Matthieu Gicquel)

3.20.0 (2021-07-07)

  • Various small bug fixes and upcoming JS feature support in the parser. (#632, #635, #637)
  • Add support for TypeScript 4.2 abstract constructor signatures. (#635)
  • Add support for TypeScript 4.3 override, static index signatures, and get/set type members. (#636) (Lucas Garron, Alan Pierce)
  • Add support for Flow indexed access types and optional indexed access types. (#636, #637)
  • Add option addUseStrict to enable adding use strict, instead of forcing it in each time
  • Fixed enabling disableESTransforms making class field declarations in ts stay when they should've been removed.

3.19.0 (2021-06-23)

  • Add option to disable ES transforms. (#623, #624, #625) (Denys Kniazevych, Alan Pierce)

3.18.2 (2021-06-07)

  • Properly handle imports like import {default as myFunc} from './myFunc'; when importing from files that are not ES modules. (#619) (Patrik Oldsberg)
  • Fix bug where other transforms were not being applied to enum value expressions, so enum declarations like A = EnumInOtherFile.A didn't work. (#621)

3.18.1 (2021-04-12)

  • Fix regression causing incomplete nullish coalescing and optional chaining in some cases. (#610)

3.18.0 (2021-04-11)

  • Add jest transform analogous to babel-plugin-jest-hoist. (#540) (Patrik Oldsberg)
  • When calling a register function or addHook, return a function that reverts the hook. (#604) (Anthony Fu)

3.17.1 (2021-01-31)

  • Fix bug where TS method overloads in a class would cause later class fields to not be handled properly. (#593)

3.17.0 (2020-12-29)

  • Fix incorrect export removal when exporting a variable defined using a destructure declaration. (#564)
  • Add support for new type syntax in TypeScript 4.1: template interpolations in string literal types and as to remap keys in mapped types. Also add parsing for static blocks and pass them through in the output. (#567)
  • Allow passing pirates options matcher and ignoreNodeModules when directly calling registerJS and related functions. (#571, #573) (Gordon Leigh)
  • Properly emit private class field declarations in the output code so that private fields can be used when they're supported by the target JS engine. (#574)
  • Fix parse error when a method or field has the name declare. (#575)

3.16.0 (2020-10-12)

  • Add support for TypeScript 4.0 type syntax: labeled tuples, catch clause unknown. (#556) (Patrik Oldsberg)

3.15.0 (2020-05-18)

  • Add support for declare class fields in TypeScript. (#537)

3.14.1 (2020-05-17)

  • Add support for export type {T} from './T'; type-only export syntax. (#533) (Patrik Oldsberg)

3.14.0 (2020-05-10)

  • Add support for TypeScript 3.8 type-only imports and exports. (#523, #532)
  • Add a --production flag to the CLI. (#529) (Matthew Phillips)
  • Fix crash when using + or - in constructor parameter defaults. (#531)

3.13.0 (2020-03-28)

  • Properly escape file paths in the react-hot-loader transform. (#512) (Jan Zípek)
  • Fix nullish coalescing when the RHS is an object literal. (#516)
  • Support reading CLI configuration from tsconfig.json. (#509, #519) (Jake Verbaten)

3.12.1 (2020-01-13)

  • Fix crash when parsing asserts b TypeScript return signatures. (#504)

3.12.0 (2020-01-01)

3.11.0 (2019-12-22)

  • Add runtime validation for options. (#468)
  • Allow .tsx and .jsx options when running sucrase from the command line. (#448) (Ricardo Tomasi, Alexander Mextner)
  • Fix bug where generator markers in methods were removed. (#463) (Bjørn Tore Håvie)

3.10.1 (2019-03-31)

  • Fix parsing of a<b>c in TypeScript. (#438)
  • Add support for new TypeScript 3.4 syntax, other parser improvements. (#439, #440)
  • Elide TS import = statements that are only used as a type. (#441)
  • Properly handle async arrow functions with multiline type parameters. (#443)

3.10.0 (2019-03-11)

  • Fix bug where /*/ was being parsed incorrectly. (#430)
  • Properly parse and compile JSX spread children. (#431)
  • Implement TypeScript export elision for exported types. (#433)

3.9.6 (2019-03-01)

  • Fix Flow bug where implements caused the class name to be incorrectly recognized. (#409)
  • Correctly handle !: in TS variable declarations. (#410)
  • Move more import code into helper functions in prep for some upcoming changes.
  • Fix bug where some JSX component names were incorrectly turned into strings. (#425) (Yang Zhang)

3.9.5 (2019-01-13)

  • Fix bug when processing a declaration that looks like an export assignment. (#402)
  • Fix TS import elision for JSX fragments and custom pragmas. (#403)
  • Treat reserved words as invalid identifiers when handling enums. (#405)

3.9.4 (2019-01-07)

  • Avoid false positive when detecting if a class has a superclass. (#399)

3.9.3 (2019-01-06)

  • Fix syntax error on arrow functions with multiline return types. (#393)

3.9.2 (2019-01-02)

  • Fix crash on optional arrow function params without type annotations. (#389)
  • Usability bug fixes for website. (#390)

3.9.1 (2018-12-31)

  • Fix react-hot-loader transform syntax error with some export styles. (#384)
  • Fix website to properly show react-hot-loader Babel transform output. (#386)

3.9.0 (2018-12-30)

  • Add a react-hot-loader transform. (#376)
  • Add support for dynamic import() syntax in TS types. (#380)
  • Many improvements to the website, including faster initial pageloads.
  • Small performance improvements.

3.8.1 (2018-12-03)

  • Fix infinite loop when a file ends with a short identifier (#363)
  • Small perf improvements.

3.8.0 (2018-11-25)

  • Various simplifications in prep for compiling the project with AssemblyScript.
  • Performance improvements, varying from 10% to 70% better performance depending on use case.
  • Fix infinite loop in flow declare module parsing (#359)

3.7.1 (2018-11-18)

  • Fix crash on empty export expressions (#338)
  • Fix crash on TypeScript declare global (#339)
  • Fix crash when using overloaded constructors in TypeScript (#340)
  • Fix TypeScript import elision when imported names are shadowed by variables (#342)
  • Fix import name transform to work in code without semicolons (#337) (Alec Larson)

3.7.0 (2018-11-11)

  • Fix perf regression in TypeScript parsing (#327)
  • Fix broken line numbers in syntax errors, improve parser backtracking performance (#331)
  • Add Parser features and bugfixes from the Babel parser, including TypeScript 3.0 support (#333)

3.6.0 (2018-10-29)

  • Add CLI support for jsx pragmas (#321) (Josiah Savary)
  • Allow super.method() calls in constructor (#324) (Erik Arvidsson)

3.5.0 (2018-09-30)

  • Change class field implementation to use initializer methods (#313)
  • Update TypeScript and Flow support to include new language features recently supported by Babel. (#314, #315, #316)
  • Properly handle function name inference in named exports (#317)

3.4.2 (2018-08-27)

  • Implement destructuring in export declarations (#305)
  • Properly handle function name inference in named exports (#308)

3.4.1 (2018-07-06)

  • Quote shorthand prop keys that contain a hyphen (#292) (Kevin Gao)
  • Fix infinite loop on incomplete JSX. (#296)

3.4.0 (2018-07-01)

  • Add a sucrase-node CLI that wraps node. (#288)
  • Allow exported generator functions. (#290)

3.3.0 (2018-06-28)

  • Add a --out-extension option to the CLI. (#282)
  • Add a -q/--quiet option in the CLI and use it in the build script. (#284)
  • Don't emit semicolons in class bodies. (#285)
  • Fix ugly emitted comments when removing code between tokens. (#286)

3.2.1 (2018-06-27)

  • Allow TS type parameters on object member methods. (#276)
  • Simplify identity source map generator. (#265)
  • Fix crash on destructured params in arrow function types. (#278)
  • Remove @flow directives from comments when the flow transform is enabled. (#279)

3.2.0 (2018-06-25)

  • Fix crash when using JSX elements as props. (#268) (Erik Arvidsson)
  • Fix incorrect compilation of TypeScript optional class properties with an initializer. (#264)
  • Fix crash on class fields that don't end in a semicolon. (#271)
  • Allow trailing commas after rest elements. (#272)
  • Don't crash on class bodies with an index signature. (#273)
  • Allow member expression identifiers when determining React displayName. (#274)
  • Add production option and use it for JSX. (#270) (Erik Arvidsson)
  • Fix off-by-one error in parsing JSX fragments. (#275)

3.1.0 (2018-06-18)

  • Add basic support for source maps (#257, #261)

3.0.1 (2018-06-11)

  • Fix crash in getVersion.

3.0.0 (2018-06-10)

Breaking Changes

  • transform now returns an object (#244). You now should write transform(...).code instead of just transform(...). code is the only property for now, but this allows Sucrase to return source maps and possibly other values.
  • The package's dist folder has been restructured, so direct internal module imports may break.

Other changes

  • Overhaul build system to use Sucrase for everything (#243)
  • Omit import helpers when unused (#237) (Alec Larson)
  • Fix files accidentally included in final package (#233)
  • Various refactors and performance improvements.

2.2.0 (2018-05-19)

  • Add support for JSX fragment syntax.
  • Add support for custom JSX pragmas rather than defaulting to React.createElement and React.Fragment.