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Update support for import assertions and import attributes in node (#3778)
Import assertions (the assert keyword) have been removed from node starting in v22.0.0. So esbuild will now strip them and generate a warning with --target=node22 or above:
▲ [WARNING] The "assert" keyword is not supported in the configured target environment ("node22") [assert-to-with]
example.mjs:1:40:
1 │ import json from "esbuild/package.json" assert { type: "json" }
│ ~~~~~~
╵ with
Did you mean to use "with" instead of "assert"?
Import attributes (the with keyword) have been backported to node 18 starting in v18.20.0. So esbuild will no longer strip them with --target=node18.N if N is 20 or greater.
Fix for await transform when a label is present
This release fixes a bug where the for await transform, which wraps the loop in a try statement, previously failed to also move the loop's label into the try statement. This bug only affects code that uses both of these features in combination. Here's an example of some affected code:
// Original codeasyncfunctiontest(){
outer: forawait(constxof[Promise.resolve([0,1])]){for(constyofx)if(y)break outer
throw'fail'}}// Old output (with --target=es6)functiontest(){return__async(this,null,function*(){
outer: try{for(variter=__forAwait([Promise.resolve([0,1])]),more,temp,error;more=!(temp=yielditer.next()).done;more=false){constx=temp.value;for(constyofx)if(y)break outer;throw"fail";}}catch(temp){error=[temp];}finally{try{more&&(temp=iter.return)&&(yieldtemp.call(iter));}finally{if(error)throwerror[0];}}});}// New output (with --target=es6)functiontest(){return__async(this,null,function*(){try{
outer: for(variter=__forAwait([Promise.resolve([0,1])]),more,temp,error;more=!(temp=yielditer.next()).done;more=false){constx=temp.value;for(constyofx)if(y)break outer;throw"fail";}}catch(temp){error=[temp];}finally{try{more&&(temp=iter.return)&&(yieldtemp.call(iter));}finally{if(error)throwerror[0];}}});}
Do additional constant folding after cross-module enum inlining (#3416, #3425)
This release adds a few more cases where esbuild does constant folding after cross-module enum inlining.
// Original code: enum.tsexportenumPlatform{WINDOWS='windows',MACOS='macos',LINUX='linux',}// Original code: main.tsimport{Platform}from'./enum';declareconstPLATFORM: string;exportfunctionlogPlatform(){if(PLATFORM==Platform.WINDOWS)console.log('Windows');elseif(PLATFORM==Platform.MACOS)console.log('macOS');elseif(PLATFORM==Platform.LINUX)console.log('Linux');elseconsole.log('Other');}// Old output (with --bundle '--define:PLATFORM="macos"' --minify --format=esm)functionn(){"windows"=="macos"?console.log("Windows"):"macos"=="macos"?console.log("macOS"):"linux"=="macos"?console.log("Linux"):console.log("Other")}export{naslogPlatform};// New output (with --bundle '--define:PLATFORM="macos"' --minify --format=esm)functionn(){console.log("macOS")}export{naslogPlatform};
With this release, on-resolve plugins will now have access to the import attributes on the import via the with property of the arguments object. This mirrors the with property of the arguments object that's already passed to on-load plugins. In addition, you can now pass with to the resolve() API call which will then forward that value on to all relevant plugins. Here's an example of a plugin that can now be written:
Formatting support for the @position-try rule (#3773)
Chrome shipped this new CSS at-rule in version 125 as part of the CSS anchor positioning API. With this release, esbuild now knows to expect a declaration list inside of the @position-try body block and will format it appropriately.
Always allow internal string import and export aliases (#3343)
Import and export names can be string literals in ES2022+. Previously esbuild forbid any usage of these aliases when the target was below ES2022. Starting with this release, esbuild will only forbid such usage when the alias would otherwise end up in output as a string literal. String literal aliases that are only used internally in the bundle and are "compiled away" are no longer errors. This makes it possible to use string literal aliases with esbuild's inject feature even when the target is earlier than ES2022.
Implement the decorator metadata proposal (#3760)
This release implements the decorator metadata proposal, which is a sub-proposal of the decorators proposal. Microsoft shipped the decorators proposal in TypeScript 5.0 and the decorator metadata proposal in TypeScript 5.2, so it's important that esbuild also supports both of these features. Here's a quick example:
// Shim the "Symbol.metadata" symbolSymbol.metadata??=Symbol('Symbol.metadata')consttrack=(_,context)=>{(context.metadata.names||=[]).push(context.name)}classFoo{
@​trackfoo=1
@​trackbar=2}// Prints ["foo", "bar"]console.log(Foo[Symbol.metadata].names)
⚠️ WARNING ⚠️
This proposal has been marked as "stage 3" which means "recommended for implementation". However, it's still a work in progress and isn't a part of JavaScript yet, so keep in mind that any code that uses JavaScript decorator metadata may need to be updated as the feature continues to evolve. If/when that happens, I will update esbuild's implementation to match the specification. I will not be supporting old versions of the specification.
Fix bundled decorators in derived classes (#3768)
In certain cases, bundling code that uses decorators in a derived class with a class body that references its own class name could previously generate code that crashes at run-time due to an incorrect variable name. This problem has been fixed. Here is an example of code that was compiled incorrectly before this fix:
This release fixes an issue with a scenario involving a tsconfig.json file that extends another file from within a symlinked directory that uses the paths feature. In that case, the implicit baseURL value should be based on the real path (i.e. after expanding all symbolic links) instead of the original path. This was already done for other files that esbuild resolves but was not yet done for tsconfig.json because it's special-cased (the regular path resolver can't be used because the information inside tsconfig.json is involved in path resolution). Note that this fix no longer applies if the --preserve-symlinks setting is enabled.
Correct this in field and accessor decorators (#3761)
This release changes the value of this in initializers for class field and accessor decorators from the module-level this value to the appropriate this value for the decorated element (either the class or the instance). It was previously incorrect due to lack of test coverage. Here's an example of a decorator that doesn't work without this change:
constdec=()=>function(){this.bar=true}classFoo{ @​decstaticfoo}console.log(Foo.bar)// Should be "true"
TypeScript recently added es2023 as a compilation target, so esbuild now supports this too. There is no difference between a target of es2022 and es2023 as far as esbuild is concerned since the 2023 edition of JavaScript doesn't introduce any new syntax features.
The previous release introduced a regression with the --keep-names setting and object literals with get/set accessor methods, in which case the generated code contained syntax errors. This release fixes the regression:
// Original codex={gety(){}}// Output from version 0.21.0 (with --keep-names)x={gety: /* @​__PURE__ */__name(function(){},"y")};// Output from this version (with --keep-names)x={gety(){}};
This PR contains the following updates:
0.20.2->0.21.4v2.7.0->v2.10.0v2.13.0->v2.14.01.22.1->1.22.31.24.0->1.26.2Release Notes
evanw/esbuild (esbuild)
v0.21.4Compare Source
Update support for import assertions and import attributes in node (#3778)
Import assertions (the
assertkeyword) have been removed from node starting in v22.0.0. So esbuild will now strip them and generate a warning with--target=node22or above:Import attributes (the
withkeyword) have been backported to node 18 starting in v18.20.0. So esbuild will no longer strip them with--target=node18.NifNis 20 or greater.Fix
for awaittransform when a label is presentThis release fixes a bug where the
for awaittransform, which wraps the loop in atrystatement, previously failed to also move the loop's label into thetrystatement. This bug only affects code that uses both of these features in combination. Here's an example of some affected code:Do additional constant folding after cross-module enum inlining (#3416, #3425)
This release adds a few more cases where esbuild does constant folding after cross-module enum inlining.
Pass import attributes to on-resolve plugins (#3384, #3639, #3646)
With this release, on-resolve plugins will now have access to the import attributes on the import via the
withproperty of the arguments object. This mirrors thewithproperty of the arguments object that's already passed to on-load plugins. In addition, you can now passwithto theresolve()API call which will then forward that value on to all relevant plugins. Here's an example of a plugin that can now be written:Formatting support for the
@position-tryrule (#3773)Chrome shipped this new CSS at-rule in version 125 as part of the CSS anchor positioning API. With this release, esbuild now knows to expect a declaration list inside of the
@position-trybody block and will format it appropriately.Always allow internal string import and export aliases (#3343)
Import and export names can be string literals in ES2022+. Previously esbuild forbid any usage of these aliases when the target was below ES2022. Starting with this release, esbuild will only forbid such usage when the alias would otherwise end up in output as a string literal. String literal aliases that are only used internally in the bundle and are "compiled away" are no longer errors. This makes it possible to use string literal aliases with esbuild's
injectfeature even when the target is earlier than ES2022.v0.21.3Compare Source
Implement the decorator metadata proposal (#3760)
This release implements the decorator metadata proposal, which is a sub-proposal of the decorators proposal. Microsoft shipped the decorators proposal in TypeScript 5.0 and the decorator metadata proposal in TypeScript 5.2, so it's important that esbuild also supports both of these features. Here's a quick example:
This proposal has been marked as "stage 3" which means "recommended for implementation". However, it's still a work in progress and isn't a part of JavaScript yet, so keep in mind that any code that uses JavaScript decorator metadata may need to be updated as the feature continues to evolve. If/when that happens, I will update esbuild's implementation to match the specification. I will not be supporting old versions of the specification.
Fix bundled decorators in derived classes (#3768)
In certain cases, bundling code that uses decorators in a derived class with a class body that references its own class name could previously generate code that crashes at run-time due to an incorrect variable name. This problem has been fixed. Here is an example of code that was compiled incorrectly before this fix:
Fix
tsconfig.jsonfiles inside symlinked directories (#3767)This release fixes an issue with a scenario involving a
tsconfig.jsonfile thatextendsanother file from within a symlinked directory that uses thepathsfeature. In that case, the implicitbaseURLvalue should be based on the real path (i.e. after expanding all symbolic links) instead of the original path. This was already done for other files that esbuild resolves but was not yet done fortsconfig.jsonbecause it's special-cased (the regular path resolver can't be used because the information insidetsconfig.jsonis involved in path resolution). Note that this fix no longer applies if the--preserve-symlinkssetting is enabled.v0.21.2Compare Source
Correct
thisin field and accessor decorators (#3761)This release changes the value of
thisin initializers for class field and accessor decorators from the module-levelthisvalue to the appropriatethisvalue for the decorated element (either the class or the instance). It was previously incorrect due to lack of test coverage. Here's an example of a decorator that doesn't work without this change:Allow
es2023as a target environment (#3762)TypeScript recently added
es2023as a compilation target, so esbuild now supports this too. There is no difference between a target ofes2022andes2023as far as esbuild is concerned since the 2023 edition of JavaScript doesn't introduce any new syntax features.v0.21.1Fix a regression with
--keep-names(#3756)The previous release introduced a regression with the
--keep-namessetting and object literals withget/setaccessor methods, in which case the generated code contained syntax errors. This release fixes the regression:alecthomas/assert (github.com/alecthomas/assert/v2)
v2.10.0Compare Source
v2.9.0Compare Source
v2.8.1Compare Source
v2.8.0Compare Source
alecthomas/chroma (github.com/alecthomas/chroma/v2)
v2.14.0Compare Source
Changelog
1e983e7lexers/cue: support CUE attributes (#961)9347b55Add Gleam syntax highlighting (#959)6b7ffe1chore(styles): add tokyonight inspired styles (#957)736c0eaTypescript: Several fixes (#952)e5c25d0Org: Keep all newlines (#951)d07caa4chore(deps): update module github.com/alecthomas/assert/v2 to v2.7.0 (#949)5f83664Vue: Handle more edge cases (#950)32c053fchore(deps): update all non-major dependencies (#948)2580aaaAdd Bazel bzlmod support into Python lexer (#947)golang/go (go)
v1.22.3v1.22.2goreleaser/goreleaser (goreleaser)
v1.26.2Changelog
Bug fixes
b3d6460: fix(docs): version typo (#4878) (@nullswan)Dependency updates
73a22e5: chore(deps): bump actions/checkout from 4.1.5 to 4.1.6 (#4876) (@dependabot[bot])1c66ce4: chore(deps): bump anchore/sbom-action from 0.15.11 to 0.16.0 (#4881) (@dependabot[bot])39d1f44: chore(deps): bump cachix/install-nix-action from 26 to 27 (#4874) (@dependabot[bot])1d49b22: chore(deps): bump codecov/codecov-action from 4.4.0 to 4.4.1 (#4882) (@dependabot[bot])fae464e: chore(deps): bump github.com/caarlos0/env/v11 from 11.0.0 to 11.0.1 (#4888) (@dependabot[bot])de796eb: chore(deps): bump github.com/google/ko from 0.15.2 to 0.15.4 (#4885) (@dependabot[bot])b4d768b: chore(deps): bump github.com/mattn/go-mastodon from 0.0.6 to 0.0.8 (#4872) (@dependabot[bot])a82491a: chore(deps): bump github.com/slack-go/slack from 0.12.5 to 0.13.0 (#4871) (@dependabot[bot])cf2c47a: chore(deps): bump github/codeql-action from 2.13.4 to 3.25.5 (#4880) (@dependabot[bot])79caa9c: chore(deps): bump github/codeql-action from 3.25.5 to 3.25.6 (#4883) (@dependabot[bot])b534f07: chore(deps): bump golang fromc24516etof1fe698(#4873) (@dependabot[bot])d7c23c1: chore(deps): bump golang fromf1fe698tob8ded51(#4887) (@dependabot[bot])Documentation updates
2023d4b: docs: fix winget default path (#4875) (@lionello)Build process updates