Sourced from esbuild's releases.
v0.28.1
Disallow
\in local development server HTTP requests (GHSA-g7r4-m6w7-qqqr)This release fixes a security issue where HTTP requests to esbuild's local development server could traverse outside of the serve directory on Windows using a
\backslash character. It happened due to the use of Go'spath.Clean()function, which only handles Unix-style/characters. HTTP requests with paths containing\are no longer allowed.Thanks to
@dellaliberafor reporting this issue.Add integrity checks to the Deno API (GHSA-gv7w-rqvm-qjhr)
The previous release of esbuild added integrity checks to esbuild's npm install script. This release also adds integrity checks to esbuild's Deno install script. Now esbuild's Deno API will also fail with an error if the downloaded esbuild binary contains something other than the expected content.
Note that esbuild's Deno API installs from
registry.npmjs.orgby default, but allows theNPM_CONFIG_REGISTRYenvironment variable to override this with a custom package registry. This change means that the esbuild executable served byNPM_CONFIG_REGISTRYmust now match the expected content.Thanks to
@sondt99for reporting this issue.Avoid inlining
usingandawait usingdeclarations (#4482)Previously esbuild's minifier sometimes incorrectly inlined
usingandawait usingdeclarations into subsequent uses of that declaration, which then fails to dispose of the resource correctly. This bug happened because inlining was done forletandconstdeclarations by avoiding doing it forvardeclarations, which no longer worked when more declaration types were added. Here's an example:// Original code { using x = new Resource() x.activate() }// Old output (with --minify)
new Resource().activate();// New output (with --minify)
{using e=new Resource;e.activate()}
Fix module evaluation when an error is thrown (#4461, #4467)
If an error is thrown during module evaluation, esbuild previously didn't preserve the state of the module for subsequent module references. This was observable if
import()orrequire()is used to import a module multiple times. The thrown error is supposed to be thrown by every call toimport()orrequire(), not just the first. With this release, esbuild will now throw the same error every time you callimport()orrequire()on a module that throws during its evaluation.Fix some edge cases around the
newoperator (#4477)Previously esbuild incorrectly printed certain edge cases involving complex expressions inside the target of a
newexpression (specifically an optional chain and/or a tagged template literal). The generated code for thenewtarget was not correctly wrapped with parentheses, and either contained a syntax error or had different semantics. These edge cases have been fixed so that they now correctly wrap thenewtarget in parentheses. Here is an example of some affected code:// Original code new (foo()`bar`)() new (foo()?.bar)()// Old output
new foo()bar();
new (foo())?.bar();
... (truncated)
Sourced from esbuild's changelog.
Changelog: 2025
This changelog documents all esbuild versions published in the year 2025 (versions 0.25.0 through 0.27.2).
0.27.2
Allow import path specifiers starting with
#/(#4361)Previously the specification for
package.jsondisallowed import path specifiers starting with#/, but this restriction has recently been relaxed and support for it is being added across the JavaScript ecosystem. One use case is using it for a wildcard pattern such as mapping#/*to./src/*(previously you had to use another character such as#_*instead, which was more confusing). There is some more context in nodejs/node#49182.This change was contributed by
@hybrist.Automatically add the
-webkit-maskprefix (#4357, #4358)This release automatically adds the
-webkit-vendor prefix for themaskCSS shorthand property:/* Original code */ main { mask: url(x.png) center/5rem no-repeat }/* Old output (with --target=chrome110) */
main {
mask: url(x.png) center/5rem no-repeat;
}/* New output (with --target=chrome110) */
main {
-webkit-mask: url(x.png) center/5rem no-repeat;
mask: url(x.png) center/5rem no-repeat;
}
This change was contributed by
@BPJEnnova.Additional minification of
switchstatements (#4176, #4359)This release contains additional minification patterns for reducing
switchstatements. Here is an example:// Original code switch (x) { case 0: foo() break case 1: default: bar() }
... (truncated)
bb9db84
publish 0.28.1 to npm9ff053e
security: add integrity checks to the Deno API0a9bf21
enforce non-negative size in gzip parsere2a1a71
security: forbid \\ in local dev server requests83a2cbf
fix #4482:
don't inline using declarations308ad74
fix #4471:
renaming of nested var declarationsf013f5f
fix some typosaafd6e4
chore: fix some minor issues in comments (#4462)15300c3
follow up: cjs evaluation fixes1bda0c3
fix #4461,
fix #4467:
esm evaluation fixesThis version was pushed to npm by GitHub Actions, a new releaser for esbuild since your current version.