Update dependency esbuild to v0.24.0 #124
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This PR contains the following updates:
0.20.2
->0.24.0
Release Notes
evanw/esbuild (esbuild)
v0.24.0
Compare Source
This release deliberately contains backwards-incompatible changes. To avoid automatically picking up releases like this, you should either be pinning the exact version of
esbuild
in yourpackage.json
file (recommended) or be using a version range syntax that only accepts patch upgrades such as^0.23.0
or~0.23.0
. See npm's documentation about semver for more information.Drop support for older platforms (#3902)
This release drops support for the following operating system:
This is because the Go programming language dropped support for this operating system version in Go 1.23, and this release updates esbuild from Go 1.22 to Go 1.23. Go 1.23 now requires macOS 11 Big Sur or later.
Note that this only affects the binary esbuild executables that are published to the esbuild npm package. It's still possible to compile esbuild's source code for these older operating systems. If you need to, you can compile esbuild for yourself using an older version of the Go compiler (before Go version 1.23). That might look something like this:
Fix class field decorators in TypeScript if
useDefineForClassFields
isfalse
(#3913)Setting the
useDefineForClassFields
flag tofalse
intsconfig.json
means class fields use the legacy TypeScript behavior instead of the standard JavaScript behavior. Specifically they use assign semantics instead of define semantics (e.g. setters are triggered) and fields without an initializer are not initialized at all. However, when this legacy behavior is combined with standard JavaScript decorators, TypeScript switches to always initializing all fields, even those without initializers. Previously esbuild incorrectly continued to omit field initializers for this edge case. These field initializers in this case should now be emitted starting with this release.Avoid incorrect cycle warning with
tsconfig.json
multiple inheritance (#3898)TypeScript 5.0 introduced multiple inheritance for
tsconfig.json
files whereextends
can be an array of file paths. Previously esbuild would incorrectly treat files encountered more than once when processing separate subtrees of the multiple inheritance hierarchy as an inheritance cycle. With this release,tsconfig.json
files containing this edge case should work correctly without generating a warning.Handle Yarn Plug'n'Play stack overflow with
tsconfig.json
(#3915)Previously a
tsconfig.json
file thatextends
another file in a package with anexports
map could cause a stack overflow when Yarn's Plug'n'Play resolution was active. This edge case should work now starting with this release.Work around more issues with Deno 1.31+ (#3917)
This version of Deno broke the
stdin
andstdout
properties on command objects for inherited streams, which matters when you run esbuild's Deno module as the entry point (i.e. whenimport.meta.main
istrue
). Previously esbuild would crash in Deno 1.31+ if you ran esbuild like that. This should be fixed starting with this release.This fix was contributed by @Joshix-1.
v0.23.1
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Allow using the
node:
import prefix withes*
targets (#3821)The
node:
prefix on imports is an alternate way to import built-in node modules. For example,import fs from "fs"
can also be writtenimport fs from "node:fs"
. This only works with certain newer versions of node, so esbuild removes it when you target older versions of node such as with--target=node14
so that your code still works. With the way esbuild's platform-specific feature compatibility table works, this was added by saying that only newer versions of node support this feature. However, that means that a target such as--target=node18,es2022
removes thenode:
prefix because none of thees*
targets are known to support this feature. This release adds the support for thenode:
flag to esbuild's internal compatibility table fores*
to allow you to use compound targets like this:Fix a panic when using the CLI with invalid build flags if
--analyze
is present (#3834)Previously esbuild's CLI could crash if it was invoked with flags that aren't valid for a "build" API call and the
--analyze
flag is present. This was caused by esbuild's internals attempting to add a Go plugin (which is how--analyze
is implemented) to a null build object. The panic has been fixed in this release.Fix incorrect location of certain error messages (#3845)
This release fixes a regression that caused certain errors relating to variable declarations to be reported at an incorrect location. The regression was introduced in version 0.18.7 of esbuild.
Print comments before case clauses in switch statements (#3838)
With this release, esbuild will attempt to print comments that come before case clauses in switch statements. This is similar to what esbuild already does for comments inside of certain types of expressions. Note that these types of comments are not printed if minification is enabled (specifically whitespace minification).
Fix a memory leak with
pluginData
(#3825)With this release, the build context's internal
pluginData
cache will now be cleared when starting a new build. This should fix a leak of memory from plugins that returnpluginData
objects fromonResolve
and/oronLoad
callbacks.v0.23.0
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This release deliberately contains backwards-incompatible changes. To avoid automatically picking up releases like this, you should either be pinning the exact version of
esbuild
in yourpackage.json
file (recommended) or be using a version range syntax that only accepts patch upgrades such as^0.22.0
or~0.22.0
. See npm's documentation about semver for more information.Revert the recent change to avoid bundling dependencies for node (#3819)
This release reverts the recent change in version 0.22.0 that made
--packages=external
the default behavior with--platform=node
. The default is now back to--packages=bundle
.I've just been made aware that Amazon doesn't pin their dependencies in their "AWS CDK" product, which means that whenever esbuild publishes a new release, many people (potentially everyone?) using their SDK around the world instantly starts using it without Amazon checking that it works first. This change in version 0.22.0 happened to break their SDK. I'm amazed that things haven't broken before this point. This revert attempts to avoid these problems for Amazon's customers. Hopefully Amazon will pin their dependencies in the future.
In addition, this is probably a sign that esbuild is used widely enough that it now needs to switch to a more complicated release model. I may have esbuild use a beta channel model for further development.
Fix preserving collapsed JSX whitespace (#3818)
When transformed, certain whitespace inside JSX elements is ignored completely if it collapses to an empty string. However, the whitespace should only be ignored if the JSX is being transformed, not if it's being preserved. This release fixes a bug where esbuild was previously incorrectly ignoring collapsed whitespace with
--jsx=preserve
. Here is an example:v0.22.0
Compare Source
This release deliberately contains backwards-incompatible changes. To avoid automatically picking up releases like this, you should either be pinning the exact version of
esbuild
in yourpackage.json
file (recommended) or be using a version range syntax that only accepts patch upgrades such as^0.21.0
or~0.21.0
. See npm's documentation about semver for more information.Omit packages from bundles by default when targeting node (#1874, #2830, #2846, #2915, #3145, #3294, #3323, #3582, #3809, #3815)
This breaking change is an experiment. People are commonly confused when using esbuild to bundle code for node (i.e. for
--platform=node
) because some packages may not be intended for bundlers, and may use node-specific features that don't work with a bundler. Even though esbuild's "getting started" instructions say to use--packages=external
to work around this problem, many people don't read the documentation and don't do this, and are then confused when it doesn't work. So arguably this is a bad default behavior for esbuild to have if people keep tripping over this.With this release, esbuild will now omit packages from the bundle by default when the platform is
node
(i.e. the previous behavior of--packages=external
is now the default in this case). Note that your dependencies must now be present on the file system when your bundle is run. If you don't want this behavior, you can do--packages=bundle
to allow packages to be included in the bundle (i.e. the previous default behavior). Note that--packages=bundle
doesn't mean all packages are bundled, just that packages are allowed to be bundled. You can still exclude individual packages from the bundle using--external:
even when--packages=bundle
is present.The
--packages=
setting considers all import paths that "look like" package imports in the original source code to be package imports. Specifically import paths that don't start with a path segment of/
or.
or..
are considered to be package imports. The only two exceptions to this rule are subpath imports (which start with a#
character) and TypeScript path remappings viapaths
and/orbaseUrl
intsconfig.json
(which are applied first).Drop support for older platforms (#3802)
This release drops support for the following operating systems:
This is because the Go programming language dropped support for these operating system versions in Go 1.21, and this release updates esbuild from Go 1.20 to Go 1.22.
Note that this only affects the binary esbuild executables that are published to the
esbuild
npm package. It's still possible to compile esbuild's source code for these older operating systems. If you need to, you can compile esbuild for yourself using an older version of the Go compiler (before Go version 1.21). That might look something like this:In addition, this release increases the minimum required node version for esbuild's JavaScript API from node 12 to node 18. Node 18 is the oldest version of node that is still being supported (see node's release schedule for more information). This increase is because of an incompatibility between the JavaScript that the Go compiler generates for the
esbuild-wasm
package and versions of node before node 17.4 (specifically thecrypto.getRandomValues
function).Update
await using
behavior to match TypeScriptTypeScript 5.5 subtly changes the way
await using
behaves. This release updates esbuild to match these changes in TypeScript. You can read more about these changes in microsoft/TypeScript#58624.Allow
es2024
as a target environmentThe ECMAScript 2024 specification was just approved, so it has been added to esbuild as a possible compilation target. You can read more about the features that it adds here: https://2ality.com/2024/06/ecmascript-2024.html. The only addition that's relevant for esbuild is the regular expression
/v
flag. With--target=es2024
, regular expressions that use the/v
flag will now be passed through untransformed instead of being transformed into a call tonew RegExp
.Publish binaries for OpenBSD on 64-bit ARM (#3665, #3674)
With this release, you should now be able to install the
esbuild
npm package in OpenBSD on 64-bit ARM, such as on an Apple device with an M1 chip.This was contributed by @ikmckenz.
Publish binaries for WASI (WebAssembly System Interface) preview 1 (#3300, #3779)
The upcoming WASI (WebAssembly System Interface) standard is going to be a way to run WebAssembly outside of a JavaScript host environment. In this scenario you only need a
.wasm
file without any supporting JavaScript code. Instead of JavaScript providing the APIs for the host environment, the WASI standard specifies a "system interface" that WebAssembly code can access directly (e.g. for file system access).Development versions of the WASI specification are being released using preview numbers. The people behind WASI are currently working on preview 2 but the Go compiler has released support for preview 1, which from what I understand is now considered an unsupported legacy release. However, some people have requested that esbuild publish binary executables that support WASI preview 1 so they can experiment with them.
This release publishes esbuild precompiled for WASI preview 1 to the
@esbuild/wasi-preview1
package on npm (specifically the file@esbuild/wasi-preview1/esbuild.wasm
). This binary executable has not been tested and won't be officially supported, as it's for an old preview release of a specification that has since moved in another direction. If it works for you, great! If not, then you'll likely have to wait for the ecosystem to evolve before using esbuild with WASI. For example, it sounds like perhaps WASI preview 1 doesn't include support for opening network sockets so esbuild's local development server is unlikely to work with WASI preview 1.Warn about
onResolve
plugins not setting a path (#3790)Plugins that return values from
onResolve
without resolving the path (i.e. without setting eitherpath
orexternal: true
) will now cause a warning. This is because esbuild only uses return values fromonResolve
if it successfully resolves the path, and it's not good for invalid input to be silently ignored.Add a new Go API for running the CLI with plugins (#3539)
With esbuild's Go API, you can now call
cli.RunWithPlugins(args, plugins)
to pass an array of esbuild plugins to be used during the build process. This allows you to create a CLI that behaves similarly to esbuild's CLI but with additional Go plugins enabled.This was contributed by @edewit.
v0.21.5
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Fix
Symbol.metadata
on classes without a class decorator (#3781)This release fixes a bug with esbuild's support for the decorator metadata proposal. Previously esbuild only added the
Symbol.metadata
property to decorated classes if there was a decorator on the class element itself. However, the proposal says that theSymbol.metadata
property should be present on all classes that have any decorators at all, not just those with a decorator on the class element itself.Allow unknown import attributes to be used with the
copy
loader (#3792)Import attributes (the
with
keyword onimport
statements) are allowed to alter how that path is loaded. For example, esbuild cannot assume that it knows how to load./bagel.js
as typebagel
:Because of that, bundling this code with esbuild is an error unless the file
./bagel.js
is external to the bundle (such as with--bundle --external:./bagel.js
).However, there is an additional case where it's ok for esbuild to allow this: if the file is loaded using the
copy
loader. That's because thecopy
loader behaves similarly to--external
in that the file is left external to the bundle. The difference is that thecopy
loader copies the file into the output folder and rewrites the import path while--external
doesn't. That means the following will now work with thecopy
loader (such as with--bundle --loader:.bagel=copy
):Support import attributes with glob-style imports (#3797)
This release adds support for import attributes (the
with
option) to glob-style imports (dynamic imports with certain string literal patterns as paths). These imports previously didn't support import attributes due to an oversight. So code like this will now work correctly:Previously this didn't work even though esbuild normally supports forcing the JSON loader using an import attribute. Attempting to do this used to result in the following error:
In addition, this change means plugins can now access the contents of
with
for glob-style imports.Support
${configDir}
intsconfig.json
files (#3782)This adds support for a new feature from the upcoming TypeScript 5.5 release. The character sequence
${configDir}
is now respected at the start ofbaseUrl
andpaths
values, which are used by esbuild during bundling to correctly map import paths to file system paths. This feature lets basetsconfig.json
files specified viaextends
refer to the directory of the top-leveltsconfig.json
file. Here is an example:You can read more in TypeScript's blog post about their upcoming 5.5 release. Note that this feature does not make use of template literals (you need to use
"${configDir}/dist/js/*"
not`${configDir}/dist/js/*`
). The syntax fortsconfig.json
is still just JSON with comments, and JSON syntax does not allow template literals. This feature only recognizes${configDir}
in strings for certain path-like properties, and only at the beginning of the string.Fix internal error with
--supported:object-accessors=false
(#3794)This release fixes a regression in 0.21.0 where some code that was added to esbuild's internal runtime library of helper functions for JavaScript decorators fails to parse when you configure esbuild with
--supported:object-accessors=false
. The reason is that esbuild introduced code that does{ get [name]() {} }
which uses both theobject-extensions
feature for the[name]
and theobject-accessors
feature for theget
, but esbuild was incorrectly only checking forobject-extensions
and not forobject-accessors
. Additional tests have been added to avoid this type of issue in the future. A workaround for this issue in earlier releases is to also add--supported:object-extensions=false
.v0.21.4
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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: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
ifN
is 20 or greater.Fix
for await
transform when a label is presentThis release fixes a bug where the
for await
transform, which wraps the loop in atry
statement, previously failed to also move the loop's label into thetry
statement. 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
with
property of the arguments object. This mirrors thewith
property of the arguments object that's already passed to on-load plugins. In addition, you can now passwith
to 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-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.v0.21.3
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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:
⚠️ 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:
Fix
tsconfig.json
files inside symlinked directories (#3767)This release fixes an issue with a scenario involving a
tsconfig.json
file thatextends
another file from within a symlinked directory that uses thepaths
feature. In that case, the implicitbaseURL
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 fortsconfig.json
because it's special-cased (the regular path resolver can't be used because the information insidetsconfig.json
is involved in path resolution). Note that this fix no longer applies if the--preserve-symlinks
setting is enabled.v0.21.2
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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-levelthis
value to the appropriatethis
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:Allow
es2023
as a target environment (#3762)TypeScript recently added
es2023
as a compilation target, so esbuild now supports this too. There is no difference between a target ofes2022
andes2023
as far as esbuild is concerned since the 2023 edition of JavaScript doesn't introduce any new syntax features.v0.21.1
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Fix a regression with
--keep-names
(#3756)The previous release introduced a regression with the
--keep-names
setting and object literals withget
/set
accessor methods, in which case the generated code contained syntax errors. This release fixes the regression:v0.21.0
Compare Source
This release doesn't contain any deliberately-breaking changes. However, it contains a very complex new feature and while all of esbuild's tests pass, I would not be surprised if an important edge case turns out to be broken. So I'm releasing this as a breaking change release to avoid causing any trouble. As usual, make sure to test your code when you upgrade.
Implement the JavaScript decorators proposal (#104)
With this release, esbuild now contains an implementation of the upcoming JavaScript decorators proposal. This is the same feature that shipped in TypeScript 5.0 and has been highly-requested on esbuild's issue tracker. You can read more about them in that blog post and in this other (now slightly outdated) extensive blog post here: https://2ality.com/2022/10/javascript-decorators.html. Here's a quick example:
Note that this feature is different than the existing "TypeScript experimental decorators" feature that esbuild already implements. It uses similar syntax but behaves very differently, and the two are not compatible (although it's sometimes possible to write decorators that work with both). TypeScript experimental decorators will still be supported by esbuild going forward as they have been around for a long time, are very widely used, and let you do certain things that are not possible with JavaScript decorators (such as decorating function parameters). By default esbuild will parse and transform JavaScript decorators, but you can tell esbuild to parse and transform TypeScript experimental decorators instead by setting
"experimentalDecorators": true
in yourtsconfig.json
file.Probably at least half of the work for this feature went into creating a test suite that exercises many of the proposal's edge cases: https://github.com/evanw/decorator-tests. It has given me a reasonable level of confidence that esbuild's initial implementation is acceptable. However, I don't have access to a significant sample of real code that uses JavaScript decorators. If you're currently using JavaScript decorators in a real code base, please try out esbuild's implementation and let me know if anything seems off.
⚠️ WARNING ⚠️
This proposal has been in the works for a very long time (work began around 10 years ago in 2014) and it is finally getting close to becoming part of the JavaScript language. 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 decorators may need to be updated as the feature continues to evolve. The decorators proposal is pretty close to its final form but it can and likely will undergo some small behavioral adjustments before it ends up becoming a part of the standard. If/when that happens, I will update esbuild's implementation to match the specification. I will not be supporting old versions of the specification.
Optimize the generated code for private methods
Previously when lowering private methods for old browsers, esbuild would generate one
WeakSet
for each private method. This mirrors similar logic for generating oneWeakSet
for each private field. Using a separateWeakMap
for private fields is necessary as their assignment can be observable:This prints
true false
because this partially-initialized instance has#x
but not#y
. In other words, it's not true that all class instances will always have all of their private fields. However, the assignment of private methods to a class instance is not observable. In other words, it's true that all class instances will always have all of their private methods. This means esbuild can lower private methods into code where all methods share a singleWeakSet
, which is smaller, faster, and uses less memory. Other JavaScript processing tools such as the TypeScript compiler already make this optimization. Here's what this change looks like:Fix an obscure bug with lowering class members with computed property keys
When class members that use newer syntax features are transformed for older target environments, they sometimes need to be relocated. However, care must be taken to not reorder any side effects caused by computed property keys. For example, the following code must evaluate
a()
thenb()
thenc()
:Previously esbuild did this by shifting the computed property key forward to the next spot in the evaluation order. Classes evaluate all computed keys first and then all static class elements, so if the last computed key needs to be shifted, esbuild previously inserted a static block at start of the class body, ensuring it came before all other static class elements:
However, this could cause esbuild to accidentally generate a syntax error if the computed property key contains code that isn't allowed in a static block, such as an
await
expression. With this release, esbuild fixes this problem by shifting the computed property key backward to the previous spot in the evaluation order instead, which may push it into theextends
clause or even before the class itself:Fix some
--keep-names
edge casesThe
NamedEvaluation
syntax-directed operation in the JavaScript specification gives certain anonymous expressions aname
property depending on where they are in the syntax tree. For example, the following initializers convey aname
value:When you enable esbuild's
--keep-names
setting, esbuild generates additional code to represent thisNamedEvaluation
operation so that the value of thename
property persists even when the identifiers are renamed (e.g. due to minification).However, I recently learned that esbuild's implementation of
NamedEvaluation
is missing a few cases. Specifically esbuild was missing property definitions, class initializers, logical-assignment operators. These cases should now all be handled:Configuration
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File name: package-lock.json
769271a5ba
tofbe17f5871
Update dependency esbuild to v0.21.0to Update dependency esbuild to v0.21.1Update dependency esbuild to v0.21.1to Update dependency esbuild to v0.21.2fbe17f5871
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File name: package-lock.json
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to4d2dc0d6ee
4d2dc0d6ee
to7c3a102427
Update dependency esbuild to v0.21.3to Update dependency esbuild to v0.21.47c3a102427
to413bcda1de
Update dependency esbuild to v0.21.4to Update dependency esbuild to v0.21.5413bcda1de
tob842569565
Update dependency esbuild to v0.21.5to Update dependency esbuild to v0.22.0Update dependency esbuild to v0.22.0to Update dependency esbuild to v0.23.0b842569565
to63308d7b7e
63308d7b7e
toe4e63aac5e
e4e63aac5e
to7c1bee4739
Update dependency esbuild to v0.23.0to Update dependency esbuild to v0.23.17c1bee4739
tocaab2a2e98
Update dependency esbuild to v0.23.1to Update dependency esbuild to v0.24.0View command line instructions
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